Steel Sheet Piles

http://www.nssmc.com/ NIPPON STEEL & SUMITOMO METAL U.S.A., INC. New York 1251 Ave of the Americas, Suite 2320, Chicago Houston Mexico New York, N.Y. 10020, U.S.A. TEL : 1-212-486-7150 FAX : 1-212-593-3049 900 North Michigan Av., Suite 1820, Chicago, Illinois 60611, U.S.A. TEL : 1-312-751-0800 FAX : 1-312-751-0345 945 Bunker Hill, Suite 600, Houston, Texas 77024, U.S.A. TEL : 1-713-654-7111 FAX : 1-713-654-1261 Calle de Ruben Dario 281 No.2101, Colonia Bosque de Chapultepec, Mexico, D. F. 11580, Mexico TEL : 52-55-5281-6123 FAX : 52-55-5280-0501 NIPPON STEEL & SUMITOMO METAL Empreendimentos Siderurgicos Ltda. São Paulo Avenida Paulista 2300, 18° andar Conj. 181 e 183 CEP 01310-300, São Paulo, SP, Brasil TEL : 55-11-3563-1900 FAX : 55-11-3563-1901 BeloHorizonte Av. do Contorno, 6594-13° andar-Sala1302, BeloHorizonte-MG, CEP 30110-044, Brasil TEL : 55-31-2191-4000 FAX : 55-31-2191-4880 Nippon Steel & Sumitomo Metal European Office Duesseldorf Am Seestern 8, 40547 Duesseldorf Federal Nippon Steel & Sumitomo Metal Dubai Office Dubai (PO Box：18347) JAFZA16, Office No.613 NIPPON STEEL & SUMITOMO METAL Southeast Asia Pte. Ltd. Singapore 16 Raffles Quay #17-01 Hong Leong Building, NIPPON STEEL & SUMITOMO METAL Australia Pty. Limited Sydney Level 24, No.1 York Street, Sydney, PT. NIPPON STEEL AND SUMITOMO METAL INDONESIA Jakarta Sentral Senayan II 201-2C Ground Floor, Jebel Ali Free Zone, Dubai, U.A.E. TEL：971-4-887-6020 FAX：971-4-887-0206 Perth N.S.W. 2000, Australia TEL : 61-2-8036-6600 FAX : 61-2-9252-2082 Level 11, BGC Centre, 28 The Esplanade, Perth, WA 6000, Australia TEL : 61-2-8036-6600 FAX : 61-2-9252-2082 Singapore 048581 TEL : 65-6223-6777 FAX : 65-6224-4207 Jl. Asia Afrika No.8, Gelora Bung Karno-Senayan, Jakarta Pusat 10270, Indonesia TEL：62-21-290-39210 FAX：62-21-290-39211 NIPPON STEEL & SUMITOMO METAL (Thailand) Co., Ltd. 120 Moo 11, Ample Tower, 14th Floor, Bangkok NIPPON STEEL & SUMITOMO METAL Consulting (Beijing) Co., Ltd. Room No.5002, Chang Fu Gong Center, Beijing Jian Guo Men Wai Da Jie 26, Chaoyang District, 100022 Beijing, P.R. China TEL : 86-10-6513-8593 FAX : 86-10-6513-7197 Shanghai Room No.808, UNITED PLAZA, 1468 Nanjing Road West, Jingan District, 200040 Shanghai, P.R. China TEL : 86-21-6247-9900 FAX : 86-21-6247-1858 Guangzhou Room 1402 G.T.Land Plaza D Tower, No8 Zhujiang West Road, Zhujiang New Town, Guangzhou, 510623, China TEL : 86-20-8386-8178 FAX : 86-20-8386-7066 Vietnam Bangna-Trad KM.4 Road, Khwang Bangna, Khet Bangna, Bangkok 10260, Thailand TEL : 66-2-744-1480 FAX : 66-2-744-1485 Room 1405, 14th Floor, SUNWAH TOWER, 115 Nguyen Hue Blvd, Ben Nghe Ward, Dist.1, Ho Chi Minh City, Vietnam TEL : 84-8-3914-7016 FAX : 84-8-3914-7018 NIPPON STEEL & SUMITOMO METAL India Private Limited New Delhi 404-407, 4th Floor DLF South Court, District Centre, Saket, New Delhi 110017, India TEL : 91-11-4763-0000 FAX : 91-11-4763-0001 Republic of Germany TEL : 49-211-5306680 FAX : 49-211-5961163 2-6-1 Marunouchi, Chiyoda-ku,Tokyo 100-8071 Japan Tel: +81-3-6867-4111 STEEL SHEET PILES K007en_04_201412f © 2012, 2014 NIPPON STEEL & SUMITOMO METAL CORPORATION STEEL SHEET PILES Applications and structural types of sheet piles Advantages of steel sheet piles over other methods (masonry, RC walls, etc.) Leading the New Era on Steel Sheet Pile with Pioneer Sprits The steel sheet piles of Nippon Steel & Sumitomo Metal are used in many fields (port and harbor structures, river revetments, retaining walls and cofferdams) and have acquired high market acceptance due to their excellent product quality and construction efficiencies that derive from their use. Nippon Steel & Sumitomo Metal, drawing a wealth of rolling, fabrication and construction methods in this fields, which have also won for the company a high reputation. Based on an accumulation of technical expertise, Nippon Steel & Sumitomo Metal has developed and placed on the market solution proposal using all our available products at a maximum. Nippon Steel & Sumitomo Metal will continue its efforts to develop novel products that bring the properties of sheet piles into full play and to respond to more stringent and diversifying user needs in the future. (1) Quick construction: Dramatic reduction in the construction period (2) Reliability for long-term use: Increases the safety factor and reduces the deformation of the wall using robust steel sheet piles (3) Availability of long pile and deep embedment: Up to 38m in length (4) Sustainability: Remove and reuse possible (5) Availability of narrow areas Checkdam Regulating pondage Cantilever-type sheet pile Irrigation channel River revetment Cantilever-type sheet pile Cantilever-type sheet pile Double-wall-type sheet pile Waste disposal area Anchored-type sheet pile Road-retaining wall Cantilever-type sheet pile Features Wide Selection of Shapes and Types Sheet pile is available in a wide range of section modulus per meter of pile wall, ranging from 874 to 21,846 cm³/m. This allows selection of the most economical type of sheet pile to meet the design requirements and the intended construction method. Superb Drivability and Watertightness The clearance between the two threaded interlocks is moderate enough to ensure both excellent drivability and reliable watertightness. Training dyke Anchored-type sheet pile Revetment Anchored-type sheet pile Temporary retaining wall Cantilever-type sheet pile Bank reinforcement Strut type sheet pile Cantilever-type sheet pile Contents 1.General  （1）Usage……………………………………………………………………… 3  （2）Example of solution proposed by us… ………………… 7  （3）Product lineup………………………………………………………… 9  （4）Grade and tolerances… ……………………………………… 11  （5）Production process……………………………………………… 13 Common utility duct  （6）Our engineering support system………………………… 15 Strut type sheet pile 2.Products Quay wall  （1）Hat-type sheet pile… …………………………………………… 17 Anchored-type sheet pile  （2）Hat-type and H-shape combined high stiffness steel sheet piles…………………………… 21  （3）Straight web-type sheet piles……………………………… 25  （4）Steel sheet pile cell method… …………………………… 26 Breakwater Reclamed Revetment  （5）U-type sheet piles… …………………………………………… 27 Double-wall-type sheet pile  （6）Combined walls…………………………………………………… 29  （7）NS-SP-J… …………………………………………………………… 31 Cellular-type sheet pile Bridge pire prtection  （8）Corner-section sheet piles : As rolls…………………… 33 Cellular-type sheet pile 3.Attachment  （1）Corner-section sheet pile… ………………………………… 35 Notice: While every effort has been made to ensure the accuracy of the information contained within this publication, the use of the information is at the reader's risk and no warranty is implied or expressed by Nippon Steel & Sumitomo Metal Corporation with respect to the use of the information contained herein. The information in this publication is subject to change or modification without notice. Please contact the Nippon Steel ＆ Sumitomo Metal Corporation office for the latest information. Please refrain from unauthorized reproduction or copying of the contents of this publication. The names of our products and services shown in this publication are trademarks or registered trademarks of Nippon Steel & Sumitomo Metal Corporation, affiliated companies, or third parties granting rights to Nippon Steel & Sumitomo Metal Corporation or affiliated companies. Other product or service names shown may be trademarks or registered trademarks of their respective owners.  （2）Tie rod, guide frame, coping ……………………………… 36 Sea surface disposal site Cellular-type sheet pile Artificial island  （3）Driving method… ………………………………………………… 38  （4）Joint method………………………………………………………… 41  （5）Watertightness… ………………………………………………… 42  （6）Anticorrosion system…………………………………………… 42 Cellular-type sheet pile 2 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL General General Quay wall, revetment, man-made island Products Attachment 3 4 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL River revetment Retaining wall General Products Bridge pier protection Attachment NS-SP-J Temporary retaining wall Cofferdam 5 6 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Example of solution proposed by us Q Do you have a steel sheet pile that can be easily installed? The vertical load in the axial direction like a crane load is not applied. Welding can be carried out near the site. Hat-type and H-shape combined high stiffness steel sheet pile NS-SP-J pile and the dedicated press-in piler can construct a earthretaining wall without dead space. This enables the full use of the premises to the boundary limits. (Refer to pages 25 and 26.) The steel sheet pile is a good method to construct a revetment quickly. The special function required to construct the revetment for reclamation is the stability against waves until the completion of reclamation. The structure must be safe even without back reclamation. Depth of approx. 10 m − 15 m Steel sheet pile cell Weak layer Combined wall of U-type / Hat-type and pipe pile ● The clearance between the threaded interlocks is moderate enough to make it easy to install sheet piles which are installed afterward while pipe piles are installed forward. This clearance can absorb the inaccuracy of the positioning of pipe piles and sheet piles. (Refer to pages 23 and 24.) Q We want to minimize deflection for safety when the front of a steel sheet pile is excavated. Can you provide a good steel sheet pile? Min. 0mm Q Can you provide a good method to build a large-scale revetment for reclamation? only one type of piling machine is required for installation and the sequential installation in the same direction is possible. This leads to easy installation. (Refer to pages 15 and 16.) The vertical load in the axial direction like a crane load is applied and the bearing force against the vertical load is expected. Welding can't be carried out near the site. NS-SP-J pile Depth of approx. 10 m or lower ● This is a gravitational wall featuring a cylindrical shape assembled with straight web-type sheet piles. Inside is filled with sand. It is excellent in structural stability. ● A prefabricated sheet pile cell method can provide quick construction. (Refer to pages 17 and 18.) Steel sheet pile double wall Weak layer Load bearing layer Load bearing layer ● This is a gravitational wall in which steel sheet piles are installed in two rows. The tops of the sheet piles are connected by tie rods. And the space between the sheet piles are filled with sand. It is excellent in structural stability. ● By dividing the construction site into multiple zones and by pairing a group of ships, the construction lead time can be reduced. Q Do you have any steel sheet pile method that is environmentally friendly? Temporary earth-retaining wall Hat-type and H-shape combined high stiffness steel sheet pile Hat-type sheet pile Small-scale excavation Hat-type sheet pile ● Unlike a concrete-based temporary earth-retaining wall, ● The interlocks are situated on the outmost side of the section. This makes it unnecessary to consider the reduction of sectional properties which are factored in with U-type sheet piles. This leads to reduction of the number of struts. ● The sheet piles can be re-used multiple times. (Refer to pages 13 and 14.) the steel sheet pile wall can be repeatedly used and is environmentally friendly. In construction, sludge is not generated, and the disposal of soil is not required. (Refer to pages 13 to 16.) Seawall Steel sheet pile cell Large-scale excavation Hat-type and H-shape combined high stiffness steel sheet pile ● The moment of inertia is almost twice as large as that of Z-type sheet pile. This leads to reduction of deflection and the number of struts. ● The sheet piles can be re-used multiple times. (Refer to pages 15 and 16.) 7 Weak layer ● In the case of construction of a revetment at a seaside where a week layer exists, the improvement of soil is eliminated by embedding sheet piles into the load-bearing layer ̶unlike a concrete caisson or stone revetment. This is an environmentally friendly method. (Refer to pages 17 and 18.) Load bearing layer 8 Attachment ● Each pile of a wall has a uniform shape and rigidity. Therefore Can you provide a good steel sheet pile? Products We have a team of civil engineers at the head office and the overseas offices. And we can propose the optimum design plan by our products through discussions with our customer in a given time after we obtain the design conditions. This is our complimentary engineering support to our customer. (Our proposal is for reference of our customer. The responsible judgment is up to the customer.) (Refer to pages 11 and 12.) Various types and sizes of sheet piles are available. The optimum type and size is selected based on the design conditions and the construction method. (874cm3/m to 21,846cm3/m) (Refer to pages 7 and 8.) Existing structure General Nippon Steel & Sumitomo Metal provides comprehensive solutions. Q We want to use our land to the utmost. STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Product lineup t Hat w = 900 mm h Unit mass Maximum length I (cm4/m) Z(cm³/m) W (kg/m2) L (m) SYW295 SYW390 SYW430 SY295 SY390 SY300 S355GP S430GP A572 Gr.50 NS-SP-10H 10,500 902 96 30*2 ✓ ✓ –*1 – – –*1 –*1 –*1 –*1 NS-SP-25H 24,400 1,610 126 30*2 ✓ ✓ *1 –*1 – – –*1 –*1 –*1 –*1 NS-SP-45H 45,000 2,450 163 30*2 ✓ ✓ – – – – – – – NS-SP-50H 51,100 2,760 186 30*2 ✓ ✓ – – – – – – – Hat+H w = 900 mm h NS-SP-10H+HY NS-SP-25H+HY 88,000 to 1,316,000 2,320 to 19,970 169 to 514 30*2 h JIS A 5523 JIS A 5528 KS F4604 EN10248 ASTM Products W Hat-type sheet piles Section modulus Type General Shape Grade Moment of inertia W Please refer to NS-SP-10H"and NS-SP-25H". H-shapes is also available JIS, ASTM and BS.*2 W h h W NS-SP-10H+HY 146,000 to 248,000 2,660 to 4,330 160 to 191 30*2 NS-SP-FL 369 89 123 38*2 ✓ ✓ ✓ *1 ✓ ✓ –*1 ✓ ✓ *1 ✓ NS-SP-FXL 570 121 154 38*2 ✓ ✓ ✓ ✓ ✓ –*1 ✓ ✓ ✓ NS-SP-Ⅱw 13,000 1,000 103 30*2 ✓ ✓ –*1 ✓ ✓ –*1 ✓ –*1 ✓ NS-SP-Ⅲw 32,400 1,800 136 30*2 ✓ ✓ –*1 ✓ ✓ –*1 ✓ –*1 ✓ NS-SP-Ⅳw 56,700 2,700 177 30*2 ✓ ✓ –*1 ✓ ✓ –*1 ✓ ✓ ✓ NS-SP-VL 63,000 3,150 210 30*2 ✓ ✓ ✓ *1 ✓ ✓ –*1 ✓ ✓ ✓ NS-SP-VIL 86,000 3,820 240 30*2 ✓ ✓ ✓ *1 ✓ ✓ –*1 ✓ ✓ ✓ NS-SP-Ⅱ 8,740 874 120 25*2 ✓ ✓ *1 ✓ *1 ✓ ✓ *1 –*1 ✓ *1 ✓ *1 ✓ 150 2 ✓ ✓* ✓* ✓ ✓* ✓ ✓* ✓* ✓ 1 1 1 1 1 Attachment Hat + (Hat+H) w = 900 mm W Straight web-type sheet piles Straight web w = 500 mm h t t w h w t h U-type w = 600 mm t w h w t h U-type sheet piles w = 500 mm t w h t w h w t h w = 400 mm w t h w h NS-SP-Ⅲ t 16,800 1,340 30* 1 1 1 1 1 NS-SP-ⅢA 22,800 1,520 146 30* –* –* –* ✓ –* ✓ –* –* –*1 NS-SP-Ⅳ 38,600 2,270 190 30*2 ✓ ✓ *1 ✓ *1 ✓ ✓ *1 ✓ ✓ *1 ✓ *1 ✓ SP φ 800 to 2000 +Ⅱw, Ⅲw, Ⅳw, 10H, 25H, 45H, 50H 98,753 to 2,184,589 2,469 to 21,846 178 to 401 30*2 NS-SP-J 12,090 1,175 145 30*2 2 1 w Combined wall Steel sheet pipe pile + Hat or U NS-SP-J NS-SP-J w = 600 mm Please refer to“NS-SP-10H",“NS-SP-25H",“NS-SP-45H",“NS-SP-50H",“NS-SP-Ⅱw",“NS-SP-Ⅲw", and“NS-SP-Ⅳw", Pipe Pile is also available JIS, ASTM and BS.*2 W 9 t h ✓ ✓ *1) Please contact us availability. *2) Please contact us detail in advance to order. ✓ ✓ ✓*1 -*1 ✓*1 –*1 ✓ 10 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Grade and tolerances Weldable hot-rolled steel sheet piles Hot-rolled steel sheet piles ■ Chemical composition of the ladle analysis Classification Grade SYW295 SYW390 SY295 SY390 Weldable hot rolled steel sheet piles Hot rolled steel sheet piles Chemical composition Mn P C Si 0.18max. 0.55max. ー 1.50max. ー ー 0.040max. 0.040max. S N 0.040max. 0.0060max. ー 0.040max. BS EN 10248-2 : 1996 Hot-rolled sheet piling of non-alloy steel Part 2. Tolerances regarding shape and dimensions ■ Chemical composition of the ladle analysis ■ Tolerances Ceq.（%） Ceq. 0.44max. 0.45max. S355GP ー S430GP Steel name Chemical composition % max 1) C Mn Si P S Item N BS EN 10248-2 1) Width 1.60 0.55 ± 2% b b b 0.24 0.045 0.045 0.009 Height h ■ Mechanical properties 450min. SYW390 390min. 490min. SY295 295min. 450min. SY390 390min. 490min. No.1A No.14B No.1A No.14B No.1A No.14B No.1A No.14B 18min. 24min. 16min. 20min. 18min. 24min. 16min. 20min. 0 43min. ー 32min. ー V notch in rolling direction 22min. ー ー ー Steel name Minimum yield strength (N/m2) t Thickness Minimum elongation on a gauge length of L0 = 5.65 S0 A% Minimum tensile strength (N/m²)1) S355GP 355 480 22 S430GP 430 510 19 q Straightness p Length L 1) See the specific limitation in the standard. p ± 4 mm b b Height ― h * Please contact us in advance. JIS A 5523 + 1.5 mm - 0.7 mm t Thickness Squareness of ends q Straightness L p U-type ±1% 2w, 3w, 4w  + 6 mm - 5 mm + 10 mm - 5 mm + 10 mm - 5 mm ±4% 10 ≦ t < 16 mm L b p Overall width difference b p End deflection Coupling mating joint angle 11 (Deflection) L × 0.1% max 20 mm (Camber) L × 0.2% max 20 mm t < 10 mm ± 1.0 mm 10 ≦ t < 16 mm ± 1.2 mm t ≧ 16 mm ± 1.5 mm (Deflection) L ≦ 10 m L > 10 m (Camber) L ≦ 10 m L > 10 m L × 0.12% (L-10) × 0.1% + 12 mm L × 0.25% (L-10) × 0.20% + 25 mm ― b 4%b ― Within 1 m of the end part in the length direction, the difference between the maximum and minimum of the overall width is 4 mm or under. ― ― Within 1 m of the end part in the length direction, the end deflection is 1.5 m or under. ― ≧ 6.0° a (straight type)a - b ≧ 7.0 (U-type)a - b ≧ 4 b U-Type ± 5% ASTM A572M / A572-12 High-strength low-alloy columbium-vanadium structural steel ASTM A6/A6M-12 Standard specifications for general requirements for rolled structural steel bars, plates, shapes, and sheet pilings. ■ Chemical composition of the ladle analysis ■ Tolerances Grade Item Chemical composition % max C 0.23 Mn 1) 1.35 Si P S 0.40 0.04 0.05 1) See the specific limitation in the standard. 4%b ― a Mass tolerance 50 4%b Grade 50 Minimum yield strength Minimum tensile strength Length Mass tolerance ASTM A6 L + 125 mm - 0 mm ± 2.5% Please contact us in case above tolerances are applied. ■ Mechanical properties p p a b a Straight type p b Squareness of ends + 1.0 mm - 0.3 mm + 1.2 mm - 0.3 mm + 1.5 mm - 0.3 mm b p Please contact us in case above tolerances are applied. p p b Interlocks of the profile ± 2%b p b p ±4% + Not specified - 0 mm b Length JIS A 5528 Hat-type t ≧ 16 mm (Deflection) L × 0.15% L ≦ 10 m L > 10 m (L-10) × 0.1% + 15 mm (Camber) L × 0.20% L ≦ 10 m L > 10 m (L-10) × 0.20% + 20 mm JIS A 5523 U-type t < 10 mm t ± 200 p p Width ≦ 0.2 % L L ■ Tolerances JIS A 5523, JIS A 5528 straight type ± 0.5 ±6%t p Note: Chemical composition and mechanical properties conform to JIS A 5523-2012 or JIS A 5528-2012 . N is shown by total in accordance with section 5. Note 2 of JIS A 5523-2012. Items t ≦ 8.5 t > 8.5 t ■ Mechanical properties Attachment Hot rolled steel sheet piles JIS A 5528 295min. Elongation % ± 4 mm ± 5 mm b SYW295 Weldable hot rolled steel sheet piles JIS A 5523 Test Piece Type and direction of test piece b Classification Yield point symbol N/mm² Standard Charpy absorbed energy, J Standard size Test Sub-size test specimen temperature test specimen （℃） 10×10mm 10×7.5mm 10×5mm h ≦ 200 h > 200 Products Note: Ceq.=C＋Mn／6＋Si／24＋Ni／40＋Cr／5＋Mo／4＋V／14 Tensile Strength N/mm² General JIS A 5523 : 2012 JIS A 5528 : 2012 BS EN 10248-1 : 1996 Hot-rolled sheet piling of non-alloy steel Part 1. Technical delivery conditions Minimum elongation 50Ksi 65Ksi In 8 in. (200 mm)：18 (345Mpa) (450Mpa) In 2 in. (50 mm)：21 * Please contact us in advance. ≧ 4.0° ― 12 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Production process General Limestone Charging scrap Iron Ore Oxygen Blow Sintering Plant Coal Charging Molten Iron Blast Furnace Coking Plant Basic Oxygen Equipment Vacuum Degassing Farnace Products Torpedo Car Continuous Castiing Attachment Reheating furnace Breakdown mill No.2 Intermediate mills No.1 Intermediate mills Finishing mill Hot saws Finished product Roller straightener Blast furnace 13 Basic-oxygen furnace Continuous caster Reheating furnace Finished product After installation 14 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Our engineering support system ● Design proposals related to the basic / detailed design of structures (temporary / permanent) using  steel sheet pile products. ■ Proposal of method to prevent corrosion General Nippon Steel & Sumitomo Metal is the world's leading supplier of hot-rolled steel sheet piles. In addition to the supply of products, We provide the complimentary engineering support listed below in response to the request of our customer. The engineering team from Nippon Steel & Sumitomo Metal and overseas offices can cover the global market. With long-standing experience, we are able to provide various kinds of recommendations. ■ Proposal of construction method Based on past achievements, we can provide various recommendations, including those regarding the selection of the most-optimum construction machine according to soil conditions. ● Design proposals related to the method to prevent corrosion of steel sheet pile products. ● Instructions on how to manufacture fabricated products, etc. Note : This is a part of complimentary engineering support for reference of our customer. The responsible judgment is up to the customer. Map of offices Through the offices below, we review various techniques, and we hold seminars, exhibitions, and construction demonstrations, etc., all over the world. Products ● Supply of information on the construction method of structures using steel sheet piles. ■ Design proposal Attachment Based on the design conditions obtained from the customer and our numerous design records, we can provide an optimum design plan. ● Dusseldorf ● Beijing Chicago ● ● Shanghai ● Dubai ● New Delhi ● New York ● Tokyo ● Houston ● Guangzhou ● Mexico Bangkok ● ● Vietnam ● Singapore ● Jakarta ● Offices with construction material engineers ｄ= 1.305(m) Perth ● β= 90.000° 換算壁体幅 Ｂ＝ 19.007 ｍ ｒ＝ 6.366 ｍ ● Sydney ● Our overseas offices Belo Horizonte ● San Paulo ● ２φ＝ 90.000 ° θ＝ 45.000 ° ２φ Ｒ＝ 10.822 ｍ Ｄ＝ 21.645 ｍ ｒ セル本体間隔 Ｓ＝ 24.309 ｍ ■ Instruction for fabrication Manual for fabrication Instruction of fabrication We have prepared manuals for fabrication and can provide instruction at the site. 15 16 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Products ■ Compatibility Hat-type sheet piles NS-SP-25H NS-SP-45H NS-SP-50H ■ Deviation angle ● Superb drivability Each interlock allows for a certain rotation. The minimum angle of coupling mating joint (the interlock swing) for the combination of the identical versions of Hat-type sheet piles is shown in the figure below. The large sectional area of the Hat-type sheet pile realizes superior General NS-SP-10H drivability. ● High structural reliability Products No reduction is required in sectional properties to consider the possible lack 4° of shear force transmission at the interlocks, which is true for U-type steel 4° sheet piles. ■ Sectional properties after corrosion ● Excellent cost-effectiveness The sectional properties of Hat-type sheet piles after 1 mm of corrosion loss per side, totaling 2 mm on both sides, are shown in the table below. cost. Sectional properties without corrosion loss ■ Shapes NS-SP-10H 13.2 10.8 NS-SP-10H NS-SP-25H 230 300 900 900 15 Z0（cm³/m） η（%） I（cm⁴/m） Z（cm³/m） 10,500 902 79 8,300 713 NS-SP-25H 24,400 1,610 82 20,000 1,320 NS-SP-45H 45,000 2,450 85 38,300 2,080 NS-SP-50H 51,100 2,760 87 44,500 2,400 t1 t1 t2 t2 368 370 NS-SP-50H NS-SP-10H 100 t1 t1 t1 90 t2 t2 t2 80 Io, Zo : Moment of inertia and section modulus without corrosion loss η : Reduction ratio after corrosion I, Z : Moment of inertia and section modulus after corrosion 17 NS-SP-45H Sectional properties with 1 mm of corrosion loss per side I0（cm⁴/m） Graphs for obtaining the reduction ratio of sectional properties, η Attachment Type η （%） The amount of steel per unit wall can be reduced, resulting in improved total 70 60 50 α=1.0 α=0.75 α=0.5 α=0.25 α=0 0 1 2 t1 (mm) 3 4 NS-SP-25H 100 90 ■ Sectional properties t h W Dimension Type Per pile Effective Effective Thickness Sectional Moment Section area of inertia modulus width height t W h cm² cm⁴ cm³ mm mm mm Per 1 m of pile wall width Unit mass Sectional Moment Section area of inertia modulus Unit mass kg/m cm²/m cm⁴/m cm³/m kg/m² NS-SP-10H 900 230 10.8 110.0 9,430 812 86.4 122.2 10,500 902 96.0 NS-SP-25H 900 300 13.2 144.4 22,000 1,450 113 160.4 24,400 1,610 126 NS-SP-45H 900 368 15.0 187.0 40,500 2,200 147 207.8 45,000 2,450 163 NS-SP-50H 900 370 17.0 212.7 46,000 2,490 167 236.3 51,100 2,760 186 Steps to calculate sectional properties after corrosion; ① Assume the corrosion rate and lifetime of the facility, and calculate the corrosion loss of the marine side t₁ (mm) and that of the land side t₂ (mm). ② Calculate the corrosion loss rate a (=t₂/t₁). ③ Using the corrosion loss of the marine side t ₁ (mm) and the corrosion loss rate α , obtain the reduction ratio of the sectional properties η from the following graphs. ④ Calculate the sectional properties after corrosion loss, Z₀ and I₀, by multiplying the sectional properties before corrosion loss, Z₃, with I₀ by the reduction ratio η . Section modulus Z ＝ Z₀ ×η Moment inertia I ＝ I₀ ×η 80 η （%） 900 900 70 60 50 α=1.0 α=0.75 α=0.5 α=0.25 0 1 2 3 t1 (mm) α=0 4 5 NS-SP-45H 100 90 80 η （%） : reduction ratio of sectional properties after corrosion（%） t₁, t₂ : corrosion loss of marine side and land side（mm） α : corrosion loss rate, α＝ t₂/t₁ Note : Only the illustrated ranges are effective in the following graphs. 70 60 50 α=1.0α=0.75α=0.5 α=0.25 0 1 2 3 t1 (mm) 4 α=0 5 6 NS-SP-50H 100 90 80 η （%） η 70 17 60 50 α=1.0 α=0.75 α=0.5 α=0.25 0 1 2 3 4 t1 (mm) 5 α=0 6 7 18 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Neutral axis after forming the wall Neutral axis per single Hat-type steel sheet pile 0.40-0.80 0.30-0.55 Crimped or welded doubles 0.70-1.00 0.60-0.90 U-type steel sheet pile βD =0.3 βD =0.3 NS-SP-10H NS-SP-10H 10,000 10,000 Ⅳw Ⅳw ⅤL ⅤL Ⅲw Ⅲw Ⅱw Ⅱw 0 0 60 60 80 80 100100 120120 140140 160160 180180 200200 220220 240240 ▽+ 0.00 ▽ βB =0.4 βB =0.4 1,000 1,000 NS-SP-10H NS-SP-10H Ⅳw Ⅳw 500500 ⅤL ⅤL Ⅲw Ⅲw Ⅱw Ⅱw 0 0 60 60 80 80 100100 120120 140140 160160 180180 200200 220220 240240 2 UnitUnit mass mass per per 1 m1ofmpile of pile wallwall width width (kg/m (kg/m ) 2) ▽+ 0.00 ▽- 1.00 ▽- 1.00 ▽- 3.00 ▽- 3.00 ▽- 5.00 SAND N =10 2 γ=19kN/m φ=30° Unplanned excavation:▽-5.50 ▽-12.00 ▽+ 0.00 ▽ ▽- 5.00 ▽- 5.00 SAND N =10 2 γ=19kN/m φ=30° ▽ ▽- 1.00 Unplanned excavation:▽-5.50 SAND N =10 2 γ=19kN/m φ=30° Unplanned excavation:▽-5.50 * w: Steel sheet pile weight (t/m/side) * Trial calculation by us ▽-12.00 ▽-12.50 【U-type(NS-SP-Ⅳ)】 w = 2.28 (t/m/side) (1.00) Reference: UK National Annex to Eurocode, 3. Design of steel structures, Part 5: Piling (NA + A1: 2012 to BS EN 1993-5: 2007) ❷ Interlock integrity in Hat-type steel sheet piles Load [kN/m] Py0: Yield load (standard value) Pm0: Plastic load (test value) 300 Py0: Yield load (standard value) 200 100 1.6m 1.6m Uncrimped double 1.6m Single 0 Quoted from the JASPP (Japanese Association for Steel Pipe Piles); "Hat-type sheet pile 900" 0 50 100 Displacement [mm] w = 1.51 (t/m/side) (0.66) 【Hat-type(NS-SP-45H)】 w = 2.04 (t/m/side) (0.89) use of Hat-type steel sheet piles 500 400 【Hat-type(NS-SP-25H)】 ■ Cases of performance evaluation for the repeated Pm0: Plastic load (test value) 700 600 19 20,000 20,000 NS-SP-25H NS-SP-25H 1,500 1,500 The reduction factor of U-type steel sheet piles is set as 0.45 for the moment of inertia, with 0.6 for the section modulus, in order to compare U-type and Hat-type using the same design conditions. NS-SP-25H (Hat-type) shows design results that are roughly equivalent to those of NS-SP-IV (U-type), and the number of short strut rows and the length of the steel sheet piles are mostly the same. However, the weight of NSSP-25H (Hat-type) is 66% that of NS-SP-IV (U-type). When using NS-SP-45H (Hat-type), the working space increases during excavation with only one strut row, and the working efficiency of concrete structure fabrication is greatly improved, enabling a construction cost reduction for the concrete structure. Although the weight increases compared with NS-SP-25H, NS-SP-45H is still 89% that of NS-SP-IV (U-type), and thus a weight reduction benefit can be obtained. Where, βB: Factor accounting for the possible reduction of the section modulus of U-piles due to insufficient shear force transmission in the interlocks βD: Factor accounting for the possible reduction of the moment of inertia of U-piles due to insufficient shear force transmission in the interlocks Bending tests for Hat-type steel sheet piles in the form of a wall as well as in the form of a single pile have been conducted. It is confirmed that the design values of the load-displacement relationship are in agreement with the experimental values. This demonstrates that the reduction of sectional properties is not required. NS-SP-25H NS-SP-25H 2,000 2,000 150 200 We have conducted performance evaluation for the repeated use of Hat-type steel sheet piles based on the field tests. So far, we have conducted these tests for the cases of different installation methods such as vibratory hammer methods and press-in methods. Case example of a repeated use test using a vibratory hammer Case example of a repeated use test using a press-in machine 20 Attachment Singles or uncrimped doubles 30,000 30,000 NS-SP-45H NS-SP-45H 2,500 2,500 ❹ Example of a trial design for temporary retaining walls Soil pressure βD NS-SP-45H NS-SP-45H 40,000 40,000 βB =1.0 βB =1.0 NS-SP-50H NS-SP-50H 3,000 3,000 2 UnitUnit mass mass per per 1 m1ofmpile of pile wallwall width width (kg/m (kg/m ) 2) of interlock integrity βB 50,000 50,000 3,500 3,500 Soil pressure ■ Reduction factor of sectional properties due to the lack Type of U-pile unit βD =0.9 βD =0.9 width (cm3/m) Moment of inertia per 1 m of pile wall 4 width (cm Moment of inertia per 1/m) m of pile wall Neutral axis per single pile in agreement with the neutral axis after forming the wall NS-SP-50H NS-SP-50H Products When a wall using U-type steel sheet piles is subjected to bending due to soil pressure or other horizontal load, a large bending shear force occurs in the interlocks of the sheet piles because these interlocks are located at the center of the wall (neutral axis position). In this case, If the shear force doesn't transmit sufficiently between the adjacent the interlocks slip from each other, and the moment of inertia and section modulus of the wall of the sheet piles are reduced. This can be referred to as "lack of interlock integrity". And the degree of reduction is expressed by reduction factor. In contrast, for a wall using Hat-type steel sheet piles, the reduction of sectional properties is not required because interlocks are located at the most outer edge of the wall, which means that the shear force does not occur in the interlocks. Reduction factors of sectional properties from code to code. An example of the Eurocodes is shown below. 60,000 60,000 General ❶ Interlock integrity of sheet piles the sectional properties of which are reduced using by interlock factors Section modulus per 1 m of pile wall 3 width (cm Section modulus per 1/m) m of pile wall integrity ❸ Steel-weight comparison between U-type and Hat-type, width (cm4/m) ■ Advantage of no reduction of sectional properties due to interlock STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Hat-type and H-shape combined high stiffness steel sheet piles ■ Sectional properties ■ Features  Other sizes are possible; please contact us in advance. - Basic type - ● Availability of numerous sectional properties Hat-type and H-shape combined high stiffness steel sheet piles come in combination of Hat-type sheet piles which have four types and H-shape sections which have many types. Eventually they provide more than 200 types of economical properties. (Section modulus per meter of wall : Approx.2,320 to 19,970cm3/m) ● Ease of fabrication ● Excellent cost-effectiveness From the viewpoint of design for the Hat-type and H-shape combined high stiffness steel sheet pile, Hat-type functions as a continuous wall to sustain soil and water, and H-shape functions as a structural member to bear the bending moment. This makes it possible to use low-cost H-shape up to 50 to 70% of weight as well as avoiding use of expensive connectors to connect a sheet pile and a section. An ordinary vibratory hammer is directly applicable for driving. The Hat-type and H-shape combined high stiffness steel sheet pile, having higher moment of inertia per pile compared with Z-type and other type piles, is very easy to work with. ■ Shape Fillet weld: Welding ratio: 40-60% Fillet weld H-shape Weld zone Hat-type sheet pile -Basic type- H-shape Hat-type sheet pile -Alternated type- Section modulus Moment of inertia kg/m 2 cm /m 3 cm /m cm4/m 10H + H400x200x9x12x13 169 215 2,320 88,000 10H + H450x200x9x12x13 172 220 2,560 106,000 2 10H + H500x200x9x12x13 176 225 2,820 126,000 10H + H500x200x9x16x13 190 242 3,270 142,000 10H + H550x200x9x16x13 194 247 3,580 168,000 10H + H550x200x9x19x13 204 260 3,940 181,000 10H + H550x250x9x16x13 208 265 4,100 187,000 10H + H600x200x12x16x13 212 271 4,270 208,000 10H + H600x200x12x19x13 222 283 4,640 222,000 10H + H650x200x12x19x13 228 290 5,060 258,000 10H + H700x200x12x19x18 234 298 5,540 300,000 10H + H700x200x12x22x18 244 311 5,960 317,000 10H + H700x250x12x19x18 250 319 6,270 331,000 10H + H700x200x12x25x18 254 323 6,370 335,000 10H + H750x250x12x19x18 256 326 6,770 378,000 10H + H750x250x12x22x18 268 342 7,330 403,000 10H + H800x250x12x22x18 273 348 7,900 459,000 10H + H900x250x14x19x18 286 365 8,810 563,000 10H + H900x250x14x22x18 299 381 9,470 598,000 10H + H900x250x16x22x18 314 400 9,890 616,000 10H + H950x250x16x22x18 321 409 10,570 689,000 10H + H1000x250x16x22x18 328 418 11,270 766,000 10H + H1000x250x16x25x18 340 433 11,980 807,000 10H + H1000x250x16x28x18 352 449 12,670 846,000 10H + H1000x250x16x32x18 369 470 13,590 897,000 25H + H1000x300x16x25x18 392 499 14,310 1,014,000 25H + H1000x250x16x32x18 399 508 14,640 1,032,000 25H + H1000x300x16x28x18 407 518 15,180 1,065,000 25H + H1000x300x16x32x18 426 543 16,330 1,130,000 25H + H1000x300x19x32x18 451 574 17,080 1,164,000 25H + H1000x250x19x40x18 455 580 17,210 1,170,000 25H + H1000x300x19x36x18 471 599 18,180 1,225,000 25H + H1000x300x19x40x18 490 624 19,280 1,286,000 25H + H1000x300x22x40x18 514 655 19,970 1,316,000 Sectional area Section modulus Moment of inertia 2 3 cm /m cm4/m - Alternated type - Fillet weld Hat-H section kg/m ● Quay walls of port facilities 21 Tie rod Anchor Hat-type and H-shape combined high stiffness steel sheet piles Mass per m2 of wall 2 ■ Examples of application and shipyard dock walls ● Temporary and permanent earth-retaining wall structures for open-cut tunnels ● Earth-retaining walls for high embankments Attachment ● Ease of Installation Mass per m2 of wall Sectional area Hat-H section Products It is easy to fabricate Hat-type and H-shape combined high stiffness steel sheet piles by combining Hat-type and H-shape with intermittent fillet welding. Welding can be carried out at the site or the nearby yard or shop. 900 General ● Examples of application using NSHYPER BEAMTM standard JIS sizes Hat-type and H-shape combined high stiffness steel sheet piles Hat-type and H-shape combined high stiffness steel sheet piles cm /m 10H + H700x200x12x16x18 160 204 2,660 146,000 10H + H700x200x12x19x18 165 210 2,870 155,000 10H + H700x250x12x16x18 167 213 2,970 159,000 10H + H700x200x12x22x18 170 216 3,080 164,000 10H + H700x250x12x19x18 173 221 3,240 171,000 10H + H750x250x12x19x18 176 224 3,480 194,000 10H + H750x250x12x22x18 182 232 3,760 207,000 10H + H800x250x12x22x18 185 235 4,040 235,000 10H + H800x250x12x25x18 191 243 4,330 248,000 Note: The intermediate pile of the alternated type in the above case is NS-SP-10H. 22 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL ■ Examples of sectional properties after corrosion in the basic type Corrosion loss is considered, based on Eurocode 3, ■ Installation method General Land side Design of steel structures - Part 5: Piling (BS EN 19935:2007) . Sea-side corrosion loss (t1) is based on the Sea side recommended values of the seawater in a temperate climate in the zone of permanent immersion or in the intertidal zone, as in Table 4-2. Land-side corrosion loss (t2) is based on the recommended values of undisturbed natural soils (sand, silt, clay, schist, etc.), as in Table 4-1. Moment of inertia η (%)ηη (%) (%) 100 100 100 100 100 Installation by hydraulic hummer 9090 90 9090 80 8080 80 8080 70 7070 70 t50 (year) 50 t (year) t (year) 7070 0 0 0 25 2525 50 +H700+×H700 ××12 × NS-SP-10H 200 19 + ××200 ×12 ×13 ×19 ×19 ×13 ×13 NS-SP-10H NS-SP-10H H700 200 12 Installation by press-in machine ■ Cases of performance evaluation for the repeated use for Hat-type and H-shape combined high stiffness steel sheet piles 0 0 0 25 2525 50 t50 (year) 50 t (year) t (year) +H900+×H900 ××14 × NS-SP-10H 250 19 + ××250 ×14 ×18 ×19 ×19 ×18 ×18 NS-SP-10H NS-SP-10H H900 250 14 +H1000 × ××16 × NS-SP-25H 32 +H1000 +250 ××250 ×16 ×18 ×32 ×32 ×18 ×18 NS-SP-25H NS-SP-25H H1000 250 16 η : Reduction ratio of sectional properties after corrosion (%) * Please contact us for more details. Attachment 90 Installation by vibratory hammer We have conducted performance evaluation for the repeated use of Hat-type and H-shape combined high stiffness steel sheet piles based on the field tests. So far, we have conducted these tests for the cases of different installation methods such as vibratory hammer methods and press-in methods. ■ Fabrication method Hat-type and H-shape combined high stiffness steel sheet piles can be easily fabricated on construction site or at a nearby yard or shop. We have prepared manuals for fabrication and can provide on-site instruction. Case example of a repeated use Case example of a repeated use test test using a vibratory hammer using a press-in machine ■ Trial calculation example of benefit in the case of the application Manual for fabrication of Hat-type and H-shape combined high stiffness steel sheet piles compared with existing temporary retaining walls The following shows the comparison result between soldier piles, which are generally used as steel material for temporary retaining walls in Southeast Asia, and Hat-type and H-shape combined high stiffness steel sheet piles. Type Soldier Pile Hat+H Built-up section Composite section 400 900 400 900 Outline 1600 Section Easy to fabricate on site H-shape : UB610×229×243 U-type steel sheet pile : FSP – IV Section Modulus Z=6,264cm3/m Moment of Inertia I=168,000cm4/m 900 Equivalent Z=6,770cm3/m NS-SP-10H+H750×250×12×19 Equivalent I=168,000cm4/m NS-SP-10H+H550×200×9×16 Steel weight per 1m of pile wall width (kg/m2) 100 Products Section modulus η (%)ηη (%) (%) t1: Sea-side corrosion (mm) t=25years, t1=0.9mm t=50years, t1=1.75mm t2: Land-side corrosion (mm) t=25years, t2=0.3mm t=50years, t2=0.6mm 400 350 300 ▽25% 250 200 150 ▽43% 342 256 100 194 50 0 Soldier Pile Hat+H (Equivalent Z) Hat+H (Equivalent I) * Trial calculation by us 23 24 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Straight web-type sheet piles Steel sheet pile cell method to 5.88 MN per linear meter of joint length, and is suited for use in cellular-type structures, such as quay walls, manmade island seawalls, cofferdams, and other similar projects. In addition, we can provide the longest product currently possible: a maximum of 38.0 m. ● High-speed construction  The prefabricated sheet pile method can cut construction time remarkably. ● Environmentally friendly method ■ Shapes  No soil improvement is needed in the case 12.7 47.0 9.5 44.5 500 of sheet piles reaching the supporting layer, as the embedded part of the sheet pile can resist earth pressure. NS-SP-FXL NS-SP-FXL 500 ■ Construction method NS-SP-FL NS-SP-FXL Per pile Effective Effective Thickness Sectional Moment Section area of inertia modulus width height t W h cm² cm⁴ cm³ mm mm mm 500 500 44.5 47.0 9.5 12.7 78.57 98.36 184 245 45.7 60.3 ● Prefabrication method Per 1 m of pile wall width Unit mass Sectional Moment Section area of inertia modulus Unit mass kg/m cm²/m cm⁴/m cm³/m kg/m² 61.7 157.1 396 89 123 77.2 196.7 570 121 Notice: While every effort has been made to ensure the accuracy of the information contained within this publication, the use of the information is at the reader’s risk and no warranty is implied or expressed by Nippon Steel Corporation with respect to the use of information contained herein. The information in this publication is subject to change or modification without notice. Please contact the Nippon Steel office for the latest information. Contents Introduction Flow Chart of the Prefab Cell Method Assembly Site and Vibro-hammers Play Important Roles in the Prefab Cell Method Assembly site for the floating crane method Vibro-hammers with multiple chucks 154 Specification of Straight Web Sheet Pile Material Quality Tolerances Sectional Properties ■ Joint strength Type Tensile strength (MN/m) NS-SP-FL 3.92 NS-SP-FXL 5.88 θ Attachment ■ Sectional properties Dimension Products NS-SP-FL NS-SP-FL Type General ■ Features ● This type of sheet pile boasts extremely high tensile strength at its interlocking sections, up 1 2 4 4 4 5 5 5 5 NS-SP-FL:θ=±12.5° NS-SP-FXL:θ=±10° θ ● Semi-prefabrication method ■ Deviation angle E a c h i n t e r l o ck a l l ow s a c e r t a i n rotation. The maximum angle of deviation（the interlock swing）for the combination of the identical versions of straight web-type sheet piles is shown in the figure below. 25 ※ in-situ method is also available 26 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL ● U-type sections have been widely used for various types ■ Shapes 18.0 NS-SP-Ⅳ NS-SP-ⅡW NS-SP-ⅢW NS-SP-ⅣW 18.0 NS-SP-Ⅲ NS-SP-ⅤL NS-SP-Ⅱ NS-SP-Ⅲ NS-SP-ⅢA NS-SP-Ⅳ NS-SP-ⅤL NS-SP-ⅥL NS-SP-ⅡW NS-SP-ⅢW NS-SP-ⅣW NS-SP-ⅥL 13.1 13.1 13.1 Each interlock allows a certain rotation. The minimum angle of deviation (the interlock swing) for the combination of the identical versions of U-type sheet piles is shown in the figure below. 27.6 27.6 225 NS-SP-ⅥL 225 27.6 500 500 6° 6° 500 500 h t 400 NS-SP-Ⅱ 18.0 210 210 400 225 24.3 200 200 500 24.3 15.5 200 24.3 NS-SP-ⅤL 15.5 15.5 Steps to calculate sectional properties after corrosion; ① Assume the corrosion rate and lifetime of the facility, Land side and calculate the corrosion loss of the marine side t₁ t2 陸側 and that of the land side t₂（mm）. ② Calculate the corrosion loss rate a（＝ t₂/t₁） ③ Using the corrosion loss of the marine side t₁（mm） and the corrosion loss rate α, obtain the reduction Graphs for obtaining the reduction ratio of sectional properties, η ratio of the sectional properties, η from the following η : reduction ratio of sectional properties after corrosion（%） graphs. t₁, t₂ : corrosion loss of marine side and land side（mm） ④ Calculate the sectional properties after corrosion loss, α : corrosion loss rate, α＝ t₂/t₁ Z and I, by multiplying the sectional properties before the corrosion loss Z₃ and I₃ by the reduction ratio η . Note : Only the illustrated ranges are effective in the following graphs. t2 ■ Deviation Angle 400 500 t1 t1 NS-SP-ⅢA A 400 150 400 150 13.0 150 13.0 NS-SP- 13.0 125 125 125 10.5 10.5 10.5 100 100 100 170 170 170 400 400 t1 600 400 NS-SP-Ⅳ t2 600 NS-SP-Ⅲ 400 400 600 600 NS-SP-Ⅱ 400 210 13.4 600 600 400 13.4 600 13.4 180 180 180 10.3 10.3 10.3 130 130 130 600 NS-SP-ⅣW t1 Attachment 600 NS-SP-ⅢW t2 Full length ■ Compatibility NS-SP-ⅡW t2 ■ Sectional properties X Dimension Type 27 Effective width W mm Per pile Effective Thickness height h t mm mm Products of permanent and temporary structures, and are one of the most familiar sheet piles among both designers and users. ● NS-SP-Ⅱ,Ⅲ,ⅢA,Ⅳ,ⅤL and ⅥL are solidly designed. These sections are especially suitable for repeated use, and have acquired high market acceptance from users. ● U-type sections offer section modulus ranging from 874 cm3/m to 3,820 cm3/m. t2 General t1 Io, Zo : Moment of inertia and section modulus without corrosion loss η : Reduction ratio after corrosion I, Z : Moment of inertia and section modulus after corrosion 海側 side Marine t1 U-type sheet piles X W Per 1 m of pile wall width Sectional area Moment of inertia Section modulus Unit mass Sectional area Moment of inertia Section modulus Unit mass cm² cm⁴ cm³ kg/m cm²/m cm⁴/m cm³/m kg/m² NS-SP-Ⅱ 400 100 10.5 61.18 1,240 152 48.0 153.0 8,740 874 120 NS-SP-Ⅲ 400 125 13.0 76.42 2,220 223 60.0 191.0 16,800 1,340 150 NS-SP-ⅢA 400 150 13.1 74.40 2,790 250 58.4 186.0 22,800 1,520 146 NS-SP-Ⅳ 400 170 15.5 96.99 4,670 362 76.1 242.5 38,600 2,270 190 NS-SP-ⅤL 500 200 24.3 133.8 7,960 520 105 267.6 63,000 3,150 210 NS-SP-ⅥL 500 225 27.6 153.0 11,400 680 120 306.0 86,000 3,820 240 NS-SP-ⅡW 600 130 10.3 78.70 2,110 203 61.8 131.2 13,000 1,000 103 NS-SP-ⅢW 600 180 13.4 103.9 5,220 376 81.6 173.2 32,400 1,800 136 NS-SP-ⅣW 600 210 18.0 135.3 8,630 539 106 225.5 56,700 2,700 177 28 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL ■ Sectional properties Combined walls Other sizes are available upon request. ● Excellent cost-effectiveness Combined walls come in combination of U-type / Hat-type sheet piles which have seven types and steel pipe sheet piles which have many types. Eventually they provide more than 74 types of economical properties. (Section modulus per meter of wall : Approx. 2,469 to 21,846 cm3/m) ● High drivability ● High quality Using Nippon steel & Sumitomo metal’ s piles ensures high quality, high strength and high stiffness. ● Function to support vertical loads Steel pipe sheet piles function as supporting piles for vertical load in addition to retaining walls. Sheet piles NS-SP- Ⅱw (2pieces) ( φ 800 to φ 2,000) ＋ (cm⁴/pile) (kg/m/pile) 965 978 1,029 1,065 1,079 1,130 1,165 1,181 1,232 1,265 1,283 1,333 1,365 1,384 1,435 1,465 1,486 1,537 1,565 1,587 1,638 1,665 1,689 1,740 1,765 1,791 1,841 1,865 1,892 1,943 1,965 1,994 2,045 2,065 2,095 2,146 2,165 174,940 183,707 244,621 276,876 318,112 375,107 417,922 476,985 553,420 655,774 688,890 786,691 917,281 962,072 1,089,459 1,250,028 1,312,315 1,566,821 1,665,889 1,746,594 2,060,877 2,177,656 2,285,093 2,668,433 2,799,033 2,939,307 3,394,987 3,544,640 3,718,184 4,267,787 4,430,010 4,874,533 5,298,742 5,471,593 6,001,716 6,495,920 6,686,751 176 178 211 219 245 259 268 297 312 348 354 370 409 416 434 475 483 535 546 555 610 622 632 691 702 714 776 788 800 867 878 936 963 973 1,035 1,063 1,073 NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw NS-SP-Ⅲw Steel sheet pipe pile Interval of Moment of Diameter Thickness joint inertia Pipe weight NS-SP-45H (1piece) D(mm) t(mm) bj(mm) (cm⁴/pile) (kg/m/pile) NS-SP-50H (1piece) 800 813 864 900 914 965 1,000 1,016 1,067 1,100 1,118 1,168 1,200 1,219 1,270 1,300 1,321 1,372 1,400 1,422 1,473 1,500 1,524 1,575 1,600 1,626 1,676 1,700 1,727 1,778 1,800 1,829 1,880 1,900 1,930 1,981 2,000 9.0 9.0 10.0 10.0 11.0 11.0 11.0 12.0 12.0 13.0 13.0 13.0 14.0 14.0 14.0 15.0 15.0 16.0 16.0 16.0 17.0 17.0 17.0 18.0 18.0 18.0 19.0 19.0 19.0 20.0 20.0 21.0 21.0 21.0 22.0 22.0 22.0 965 978 1,029 1,065 1,079 1,130 1,165 1,181 1,232 1,265 1,283 1,333 1,365 1,384 1,435 1,465 1,486 1,537 1,565 1,587 1,638 1,665 1,689 1,740 1,765 1,791 1,841 1,865 1,892 1,943 1,965 1,994 2,045 2,065 2,095 2,146 2,165 174,940 183,707 244,621 276,876 318,112 375,107 417,922 476,985 553,420 655,774 688,890 786,691 917,281 962,072 1,089,459 1,250,028 1,312,315 1,566,821 1,665,889 1,746,594 2,060,877 2,177,656 2,285,093 2,668,433 2,799,033 2,939,307 3,394,987 3,544,640 3,718,184 4,267,787 4,430,010 4,874,533 5,298,742 5,471,593 6,001,716 6,495,920 6,686,751 ・Please contact us for material quality of steel pipe sheet pile. ■ Examples of application ■ Construction method ● Quay walls of port facilities and shipyard dock walls ● Vibratory hammer and hydraulic hammer are also available for installation. Anchor Combined wall (cm⁴/m) (cm³/m) (kg/m/m) 98,753 102,188 127,176 139,394 156,630 177,662 193,135 216,641 243,524 281,784 293,078 325,900 372,743 387,335 428,180 483,606 503,013 586,622 616,509 640,598 739,820 773,606 804,365 920,792 957,073 995,650 1,129,116 1,169,098 1,215,013 1,370,154 1,411,882 1,538,230 1,644,774 1,687,637 1,833,150 1,952,902 1,998,583 2,469 2,514 2,944 3,098 3,427 3,682 3,863 4,265 4,565 5,123 5,243 5,580 6,212 6,355 6,743 7,440 7,616 8,551 8,807 9,010 10,045 10,315 10,556 11,693 11,963 12,247 13,474 13,754 14,071 15,412 15,688 16,820 17,498 17,765 18,996 19,716 19,986 189 189 199 200 210 211 212 222 224 236 236 238 250 251 253 266 266 280 282 283 297 298 299 314 315 316 332 333 334 350 351 366 368 369 385 387 388 ■ Steel sheet pipe piles ＋ NS-SP-10H（1piece） NS-SP-10H (1piece) Tie rod (mm) bsp b D NS-SP- Ⅳw (2pieces) ● Earth-retaining walls for high embankments Unit mass 2,165 2,178 2,229 2,265 2,279 2,330 2,365 2,381 2,432 2,465 2,483 2,533 2,565 2,584 2,635 2,665 2,686 2,737 2,765 2,787 2,838 2,865 2,889 2,940 2,965 2,991 3,041 3,065 3,092 3,143 3,165 3,194 3,245 3,265 3,295 3,346 3,365 bj ・Joint thickness is 9mm or 11mm. 29 bj(mm) 9.0 9.0 10.0 10.0 11.0 11.0 11.0 12.0 12.0 13.0 13.0 13.0 14.0 14.0 14.0 15.0 15.0 16.0 16.0 16.0 17.0 17.0 17.0 18.0 18.0 18.0 19.0 19.0 19.0 20.0 20.0 21.0 21.0 21.0 22.0 22.0 22.0 NS-SP- Ⅲw (2pieces) NS-SP-25H (1piece) Combined wall t(mm) 800 813 864 900 914 965 1,000 1,016 1,067 1,100 1,118 1,168 1,200 1,219 1,270 1,300 1,321 1,372 1,400 1,422 1,473 1,500 1,524 1,575 1,600 1,626 1,676 1,700 1,727 1,778 1,800 1,829 1,880 1,900 1,930 1,981 2,000 Type Combined wall Moment of Section inertia modulus Width Attachment ■ Shapes D(mm) Joint weight kg/ m/2piles 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 t Steel sheet pile Moment of Width Pile weight Number inertia of sheet (kg/m/ piles bsp(mm) (cm⁴/bsp) 2piles) 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 2 1,200 38,880 163 Products The ease in connecting large joints realizes quick and high-quality construction. Pipe weight b 176 178 211 219 245 259 268 297 312 348 354 370 409 416 434 475 483 535 546 555 610 622 632 691 702 714 776 788 800 867 878 936 963 973 1,035 1,063 1,073 Joint weight kg/ m/2piles 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 69.4 t Type NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H NS-SP-10H ※ Please contact us for section properties after corrosion. ※ In this case, length of steel sheet pipe pile and sheet pile are same. Steel sheet pile Moment of Width Pile weight Number inertia of sheet piles bsp(mm) (cm⁴/bsp) (kg/m/pile) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 900 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 86 Width Combined wall Moment of Section inertia modulus General Steel sheet pipe pile Interval of Moment of Diameter Thickness joint inertia bsp D ■ Steel sheet pipe piles ＋ NS-SP-Ⅲw（2pieces） ■ Features Steel pipe sheet piles bj Unit mass (mm) (cm⁴/m) (cm³/m) (kg/m/m) 1,865 1,878 1,929 1,965 1,979 2,030 2,065 2,081 2,132 2,165 2,183 2,233 2,265 2,284 2,335 2,365 2,386 2,437 2,465 2,487 2,538 2,565 2,589 2,640 2,665 2,691 2,741 2,765 2,792 2,843 2,865 2,894 2,945 2,965 2,995 3,046 3,065 98,858 102,841 131,697 145,698 165,502 189,418 206,940 233,728 263,985 307,234 319,870 356,502 409,117 425,323 470,584 532,504 553,920 646,755 679,596 706,033 815,668 852,607 886,198 1,014,273 1,053,761 1,095,703 1,241,951 1,285,292 1,335,017 1,504,374 1,549,442 1,687,507 1,802,320 1,848,456 2,006,933 2,135,569 2,184,589 2,471 2,530 3,049 3,238 3,621 3,926 4,139 4,601 4,948 5,586 5,722 6,104 6,819 6,978 7,411 8,192 8,386 9,428 9,709 9,930 11,075 11,368 11,630 12,880 13,172 13,477 14,820 15,121 15,461 16,922 17,216 18,453 19,174 19,457 20,797 21,561 21,846 178 178 190 191 202 204 205 218 219 233 234 236 250 250 252 267 268 283 285 286 302 303 304 321 322 323 340 341 342 360 361 377 380 381 398 400 401 30 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL ■ Sectional properties after corrosion NS-SP-J Sectional properties without corrosion loss NS-SP-J piles can be installed in close proximity to existing structures, permitting the construction of retaining walls abutting site boundaries and making maximum use of the site area. Z0 （cm³/m） η （%） （cm⁴/m） I Z （cm³/m） 12,090 1,175 85 10,300 999 NS-SP-J ● 100% intelock integrity t1 t1 t2 t2 t1 t1 t1 t2 t2 t2 Products As interlocks are located on the outermost side of the way, there is no need to consider the reduction of sectional proper ties due to slip on interlocks, and this permits economical design. Sectional properties with 1 mm of corrosion loss per side I0 （cm⁴/m） General ● Close-proximity installation Type ● Cost-saving and Work-shortening of  Temporary Work Io, Zo : Moment of inertia and section modulus without corrosion loss : Reduction ratio after corrosion I, Z : Moment of inertia and section modulus after corrosion η Attachment Cost-saving and the shortening of temporary work time Compared to conventional steel sheet piles for temporary work with an effective width of 400 mm, NS-SP-J has an effective width of 600 mm. This makes it possible to reduce the number of installed piles, with less cost and improved water tightness. Steps to calculate sectional properties after corrosion; ① Assume the corrosion rate and lifetime of the facility, and calculate the corrosion loss of the marine side t₁ (mm) and that of the land side t₂ (mm). ② Calculate the corrosion loss rate a ( ＝ t₂/t₁). ③ Using the corrosion loss of the marine side t₁ (mm) and the corrosion loss rate a, obtain the reduction ratio of the sectional properties η from the following graphs. ④ Calculate the sectional properties after corrosion loss, Z and I, by multiplying the sectional properties before corrosion loss, Z₀ and I₀, by the reduction ratio η . Section modulus Z ＝ Z₀ ×η Moment inertia I ＝ I₀ ×η ■ Shapes 600 13.0 200 W t Graphs for obtaining the reduction ratio of sectional properties, η h ■ Sectional properties η Dimension Type NS-SP-J Per pile Effective Effective Thickness Sectional Moment Section area of inertia modulus width height t W h cm² cm⁴ cm³ mm mm mm 600 200 13.0 111.2 7,250 705 t₁, t₂ Per 1 m of pile wall width Unit mass Sectional Moment Section area of inertia modulus Unit mass kg/m cm²/m cm⁴/m cm³/m kg/m² 87.3 185.3 12,090 1,175 145 α Note : reduction ratio of sectional properties after corrosion（%） : corrosion loss of marine side and land side（mm） : corrosion loss rate, α＝ t₂/t₁ : Only the illustrated ranges are effective in the following graphs. 100 90 ■ Deviation angle * NS-SP-J can be interlocked with some U-type sheet piles. The compatible types for interlocking depend on the usage conditions at the site. Please consult Nippon Steel & Sumitomo Metal for details. 4° 4° η（%） 80 70 50 α=0.25 α=1.0 60 α=0 α=0.75 α=0.5 0 1 2 3 4 5 6 t（mm） 1 31 32 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Corner-section Sheet Piles: As Rolls ■ Sectional properties Moment of inertia Section modulus cm² kg/m cm⁴ cm³ 125 13 79.63 62.5 2,330 237 400 125 13 76.40 60.0 1,930 222 400 170 15.5 96.76 76.0 4,630 337 NS-SP-CⅢ 400 NS-SP-CⅢe NS-SP-CⅣ ● Corner-section sheet piles are a newly developed type Corner joint h t Ordinary joint W h Attachment ■ Shapes t W Ordinary joint NS-SP-CⅢ、NS-SP-CⅣ Corner joint ■ Compatibility Corner-section sheet pile NS-SP-CⅢ 90° NS-SP-Ⅱ NS-SP-Ⅲ NS-SP-CⅢe NS-SP-Ⅳ NS-SP-ⅤL U-type sheet pile U-type sheet pile NS-SP-J NS-SP-CⅣ ■ Installation NS-SP-CⅢe NS-SP-CⅢ、NS-SP-CⅣ NS-SP-CⅢe Even Even Even Odd Odd Even Even Even Odd Odd Odd Even U-type sheet pile Corner-section sheet pile U-type sheet pile 33 Products produced by rolling, to replace the conventional T-shape corner-sheet piles produced by welding. Thus, these eliminate the need for welding and other fabrication processes and are far lighter in weight. ● For assembly, the conventional cast equipment can be used as-is. ● In particular, Larssen sheet piling has been adopted as a base for the shape of corner joints, in order to prevent detachment, and therefore, particularly, joint performance such as fitment and repetition endurance is excellent. Thickness t mm Unit mass Effective height h mm Type Per pile Sectional area Effective width W mm General Dimension ■ High reliability 34 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Attachment Execution details: Tie rods, waling Example of a tie rod system elevation view elevation view plain view plain view Setting waling on back face of the sheet pile Setting waling on front face of the sheet pile elevation view elevation view plain view plain view Setting waling on back face of the sheet pile Setting waling on front face of the sheet pile Attachment Corner section: Irregular-shape steel sheet piles ring joint anchor sheet pile turnbuckle waling V20JP is produced in Japan by Nippon steel & Sumitomo Metal Coporation under authority of PilePro LLC USA Products front side sheet pile One of the methods for connecting a corner is the method of using hot-extruded shape steel, which is a product formed using a hot-extrusion method and not necessarily involving welding at the site. As shown in the figures below, this product is applicable for use at various angles. To support a part of the external force applied to the steel sheet pile, sheet pile walls are often provided with waling, tie rods, and tie wires at the upper part of the steel sheet pile. The following figures show an installation example of a tie rod and waling. Irregular-shape steel sheet piles are used for the change of the driving normal line of a steel sheet pile, for the correction of the intersection point of steel sheet pile walls, or for the correction of the slope of the normal line of a steel sheet pile wall. Irregular-shape steel sheet piles are manufactured by vertically cutting the web, assembling them in the intended shape, and welding them. Example of the shape of the connection of U-type sheet pile Example of the shape of the corner of U-type sheet pile ; welding point ; welding point Angle-correction steel sheet piles An angle-correction sheet pile corrects the angle when driving the sheet pile. This type of sheet pile is produced by either of the following two construction methods: a method that obliquely cuts two steel sheet pile webs to be assembled; and a method that cuts the center of the steel sheet pile web and assembles it by inserting a trapezoidal steel plate into the center. When using a trapezoidal steel plate, it is necessary to use steel with a strength equivalent to or stronger than that of the steel sheet pile base material. 35 t2 t2 t2 t2 ＊t1>t2 sheet pile sheet pile trapezoidal shape trapezoidal shape steel plate steel plate (material (material is equal or is equal or stronger than the stronger than the base material) base material) t1 t1 (a) Cut sheet pilobliguely (Need two pieces of sheet piles) t1 t1 (b) Use trapezoidal shape steel plate (Need one piece of sheet pile) General Corner section: Hot-extruded shape steel 36 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Exection details : Concrete coping Driving method Side view ②,③ Plain view ① D13 D13 ① D13 ② D13 Sheet piles are driven into the ground by transferring to them up-and-down vibratory forces generated by a vibratory hammer. As percussion force is not used, the pile head is not damaged, driving efficiency is high, and it is useful for both driving and pulling piles. Products 50㎜∼70㎜ ■ Vibration method General To prevent water from entering the joint or to improve joint efficiency of U-type steel sheet pile, it is usually install the concrete coping at the top of steel sheet pile walls. Here, one example shown in below. Attachment Driving of the Hat-type sheet pile Execution details: Guide frames Driving of a U-type sheet pile In installation of steel sheet piles, it is necessary to install guide frames to ensure correct driving position and the stability of the steel sheet piles during construction. Here, one example is shown in which two rows of guide frames parallel to the normal line are driven at intervals of 2 to 4 m and in which the guide beam is mounted inside. sheet pile guide frame guide pile guide frame 2∼4m guide pile HH guide pile 2H+(2∼5)cm Driving of a U-type sheet pile 37 Driving of a Hat-type and H-shape combined high stiffness steel sheet pile 38 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL ■ Press-in method A percussion method is a method in which steel sheet piles are driven into the ground with the percussion force of a hydraulic hammer or diesel hammer. To prevent buckling at the head of the sheet pile, a pile cap is generally attached to the head of the sheet pile. Sheet piles can be easily built with high percussion force at a location with large joint resistance or ground resistance. Sheet piles are pressed-in using hydraulic mechanism by grasping the middle place of sheet pile while taking reaction by holding driven piles. Driving machine is compact, and need no crane, though it needs crane separately for hanging sheet piles. It is applicable to the driving conditions such as narrow places and low clearance places. It is also possible to drive piles in conditions of low noise and low vibration. When ground is so hard that driving is difficult by using only pressing machine, it is useful to use water jet cutter together. General ■ Percussion method Press-in machine for Hat-type sheet pile Products Attachment Plain view Side view Pressing-in of Hat-type sheet pile Example of a pile cap for Hat-type and H-shape combined high stiffness steel sheet piles Press-in machine for U-type sheet pile Plain view Side view Pressing-in of U-type sheet pile Press-in machine for NS-SP-J (close-proximity installation) Plain view Side view Example of construction using a hydraulic hammer 39 Pressing-in of NS-SP-J 40 STEEL SHEET PILES NIPPON STEEL & SUMITOMO METAL Joint method Watertightness ■ Weld joint (temporary / permanent installation) (a) U-type sheet pile PL gousing after welding bp bp bp tp ℓp hw ℓp ⅥL， ⅡW， ⅢW， ⅣW ) shop welding (Ⅳ， ⅤL， shop welding (Ⅱ, Ⅲ) Water-blocking material ●Application type Fitting example of applied water-blocking material Swellable water-blocking material (b) Hat-type sheet pile Anticorrosion system bp1 tp1 bp１ penetration welding or gousing after welding ℓp１ bp2 hw : welding area : non welding area tp2 ℓp２ When welding, it's need to choice welding rod as considering base material, thickness of sheet pile, position of weld. Here, shows the examples of welding material of JIS. Steel sheet pile material 41 Hand welding The following methods are available to prevent the corrosion of steel sheet piles. (1) Designing the sheet pile considering corrosion allowance (2) Cladding using concrete to prevent corrosion (3) Coating the sheet pile to prevent corrosion Four types are available with regard to this method: by painting; using organic lining: using petrolatum lining; or using inorganic lining. (4) Electrolytic protection method Two types are available with regard to this method: by externally supplying a protection power source to prevent corrosion (external power method) or by attaching alloy such as aluminum and magnesium to the steel material as a sacrificial anode (galvanic anode method). It is necessary to select the most-optimum corrosion prevention method according to the design and site condition. For details, please contact us. Non-gas shielded arc welding (A) Spec Grade Spec Grade SY295 SYW295 Low-hydrogen type coated electrode for grade 490N/mm² JIS Z3212 D5016 Non-gas flux cored wire electronode for grade 490N/mm² JIS Z3313 YFW-S50DX SY390 SYW390 Low-hydrogen type coated electrode for grade 570N/mm² JIS Z3212 D5816 ─ Steel sheet pile material ●Flow type Attachment : welding area : non welding area Application example water-blocking material Products tp bp gousing after welding A steel sheet pile consists of continuous steel material and is itself water-impermeable material. However, considering the ease of driving, a slight gap is provided at the joint. It is known that, generally, the amount of water leaking from the joint is reduced over time by clogging sand. However, if you would like to stop water at an early stage, it is necessary to take measures to stop water at the joint. The most popular method is when swelling waterstop material is preliminary applied to the joint. Various water-stop materials have been developed for this. For details, please contact us. General When steel sheet piles are used, multiple sheet piles are sometimes joined to obtain a specified length. In general, a weld joint is used. HWL (mean high-water spring) Tidal zone LWL (mean low-water spring) CO2 gas shielded arc welding MLWL (mean low water level) Spec Grade Spec H.W.L. Tidal zone Solid wire electrode for grade 490N/mm² JIS Z3312 YGW11 Flux cored wire electrode for grade 490N/mm2 JIS Z3313 YFW-C50DX SY390 SYW390 Solid wire electrode for grade 570N/mm² JIS Z3312 YGW12 Flux cored wire electrode for grade 570N/mm2 JIS Z3313 YFW-C60FX (C) Coating and / or Cladding Coating and / or Cladding M.L.W.L. L.W.L. L.W.L. -1m In seawater G.L. Grade SY295 SYW295 Coating or Cladding Splash zone MSL (average sea level) In seawater (B) Atmosphere above the sea Splash zone Depth ─ Atmosphere above the sea Seabed surface In seabed Corrosion condition at the sea area In seabed Electrolytic protection Electrolytic protection Corrosion allowance Example of the corrosion classification of port structures and the applied corrosion protection method 42