EP0795364B1 - Method of correcting u-shaped steel sheet pile - Google Patents

Method of correcting u-shaped steel sheet pile Download PDF

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Publication number
EP0795364B1
EP0795364B1 EP96931237A EP96931237A EP0795364B1 EP 0795364 B1 EP0795364 B1 EP 0795364B1 EP 96931237 A EP96931237 A EP 96931237A EP 96931237 A EP96931237 A EP 96931237A EP 0795364 B1 EP0795364 B1 EP 0795364B1
Authority
EP
European Patent Office
Prior art keywords
steel sheet
shaped steel
flange
jig
correction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96931237A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0795364A1 (en
EP0795364A4 (en
Inventor
Toru Yuasa
Hiroshi Shikano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP7253764A external-priority patent/JP2874611B2/ja
Priority claimed from JP07343566A external-priority patent/JP3129179B2/ja
Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to EP03002697A priority Critical patent/EP1338351B1/en
Publication of EP0795364A1 publication Critical patent/EP0795364A1/en
Publication of EP0795364A4 publication Critical patent/EP0795364A4/en
Application granted granted Critical
Publication of EP0795364B1 publication Critical patent/EP0795364B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/14—Recontouring

Definitions

  • the present invention relates to a method of reforming U-shaped steel sheet piles for use in civil engineering and building construction, and particularly to a method of reforming U-shaped steel sheet piles having an arm portion between a flange and a joint.
  • Steel sheet piles are shaped by hot rolling and are cut to a predetermined length. While the cooling is taking place, warping or bending occurs in the longitudinal direction due to formation of internal stresses.
  • Warping means a large curve or edge curve in the direction perpendicular to the sheet pile wall 2 of a U-shaped steel sheet pile as illustrated by symbol “C” in Figure 1
  • bending means a large curve or edge curve in the direction parallel to the sheet pile wall 2 of a U-shaped steel sheet pile as illustrated by symbol “B” in Figure 2.
  • the tolerance for bending of U-shaped steel sheet piles is defined as being smaller than the length X 0.12% for steel sheet piles having a length of 10 m or less, and as being smaller than (length - 10 m) X 0.10% + 12 mm for steel sheet piles having a length over 10 m.
  • the tolerance for warping of U-shaped steel sheet piles is defined as being smaller than the length X 0.25% for steel sheet piles having a length of 10 m or less, and as being smaller than (length - 10 m) X 0.20% + 25 mm for steel sheet piles having a length over 10 m.
  • Correction of these malformations is usually carried out using a roller straightener.
  • a straightener has, for example, four upper rollers and three lower rollers positioned in a zigzag arrangement, a satisfactory level of correction cannot be achieved for the front and rear ends of a pile.
  • it is rather difficult to reform the bending and warping at the front and rear ends of a pile with a roller straightener, and it is general to reform the bending and warping at the front and rear ends with a press reformer after correction with a roller reformer.
  • Figure 3 illustrates correction of bending with a press reformer for a U-shaped steel sheet pile 1 to be reformed.
  • a press rod (not shown) is provided to apply a pressing force in the direction shown by an arrow through a jig 5.
  • jigs 6, 8 which support outer surface 4 of the flange of the U-shaped steel sheet pile 1 are provided to restrict movement of the pile.
  • Japanese Patent Application Laid-Open Specification No. 61-63316 discloses a roller straightener comprising a pair of upper and lower rollers having a correcting section with which a web portion and flange portions of U-shaped steel sheet piles are grasped.
  • the roller straightener comprises a joint restricting section provided next to both sides of the correcting section of the upper roller, which restricts the joint portion of the U-shaped steel sheet pile.
  • Japanese Patent Application Laid-Open Specification No. 55-70418 proposes a similar arrangement.
  • straightening rollers 10 of U-shaped steel sheet piles are designed such that a web 12, flanges 14, and joints 16 are respectively restricted on their outer surfaces by a straightening roller 10a, 10b, and a roller 18, each separated from each other, so as to achieve correction by repeating bending in longitudinal and transverse directions, and such that the width of a pile can be adjusted by rollers 18 which restrict the outer surfaces of the joint 16.
  • a straightening roller 10a, 10b, and a roller 18, each separated from each other so as to achieve correction by repeating bending in longitudinal and transverse directions, and such that the width of a pile can be adjusted by rollers 18 which restrict the outer surfaces of the joint 16.
  • DE-A-332 562 discloses an apparatus for bending shaped steel, as bulb iron. To prevent buckling of the web of bulb iron during bending the apparatus has a lower and an upper clamping jaw which press against the web. In addition, the upper clamping jaw presses against the inner side of the flange and the outer side of the bulb of the bulb iron.
  • a primary object of the present invention is to provide a new straightening method and a jig therefor, which can solve disadvantages of conventional methods and jigs for correcting bending in the longitudinal direction for U-shaped steel sheet piles.
  • a more definite object of the present invention is to provide a correcting method and a jig therefor, which can efficiently correct bending of U-shaped steel sheet piles, especially steel sheet piles having high stiffness in bending in the longitudinal direction, such as U-shaped steel sheet piles having an arm portion between flanges and a joint (claw).
  • a secondary object of the present invention is to provide a roller straightening method, which can achieve correction of warping without deformation of a sectional shape for U-shaped steel sheet piles having an arm portion.
  • the inventors completed the present invention based on the findings that in order to thoroughly correct bending of sheet piles having a high stiffness in bending in the longitudinal direction, it is effective to apply pressing force to the outer surface of one of the flanges as well as to apply pressing force to the inner surface of the other flange in the same direction.
  • the inventors studied the problem that the angle between a flange and a joint differs from that of the final product when warping is corrected using rollers for U-shaped steel sheet piles having an arm portion.
  • the inventors completed the present invention based on the finding that it is not enough to merely restrict the full surfaces of the web and flanges, but that the correction of such an arm portion can be achieved precisely by means of restricting not only the web and flange, but also an arm portion with their full surfaces, and preferably by using a roller straightener having integrated upper and lower rollers.
  • the present invention is a method of straightening U-shaped steel sheet piles to correct bending in the longitudinal direction, the bending having been formed during hot rolling, characterized in that a pressing force is applied to the outer surface of one of the flanges of the U-shaped steel sheet piles, and simultaneously a pressing force is applied to the inner surface of the other flange.
  • the present invention is a correcting jig assembly for U-shaped steel sheet piles, comprising a first jig member having a surface to be pressed against the outer surface of one of the flanges of U-shaped steel sheet pile to be corrected, together with a second jig member which is connected to the first jig member, and which has a surface to be pressed against the inner surface of the other flange of the U-shaped steel sheet pile to be corrected.
  • a fitting portion may be provided in a connecting portion between the first jig member and the second jig member so as to make it possible to connect and disconnect the second jig member having a surface to be pressed against the inner surface of a flange with the first jig member having a surface to be pressed against the outer surface of the other flange.
  • an adjusting mechanism may be provided in a connecting portion between the first jig member and the second jig member, which is able to adjust a relative position in the widthwise direction of the second jig member having a surface to be pressed against the inner surface of a flange with respect to the first jig member having a surface to be pressed against the outer surface of the other flange.
  • the present invention is a method of correcting malformation of U-shaped steel sheet piles comprising a web portion, flange portions, and joint portions, and an arm portion between the flange portion and the joint portion, characterized by using a roller straightener by which not only the web and flange portions, but also the arm portion are restricted from the lower and upper sides thereof, and preferably by using a roller straightener having integrated upper and lower rollers.
  • a straightening roller may be used to restrict the arm portion from the lower and upper side of the arm portion at an angle different from that required for a final product.
  • Figure 1 is a diagrammatic illustration of warping of steel sheet piles.
  • Figure 2 is a diagrammatic illustration of bending of steel sheet piles.
  • Figure 3 is a schematic view showing press correcting of bending of steel sheet piles.
  • Figure 4a illustrates a way of reducing the width of steel sheet piles by press straightening
  • Figure 4b illustrates formation of local recesses in the surface of a flange.
  • Figure 5 is an illustration of conventional roller straightening for U-shaped steel sheet piles.
  • Figure 6 is an illustration of conventional roller straightening for U-shaped steel sheet piles having an arm portion.
  • Figure 7 is an illustration of press correcting according to the present invention.
  • Figure 8 is an illustration of an example of a jig assembly for press correcting in accordance with the present invention.
  • Figure 9 is an illustration of another example of a jig assembly for press correcting in accordance with the present invention.
  • Figure 10 is an illustration of an arrangement of correcting rollers and a U-shaped steel sheet having arms in accordance with the present invention.
  • Figures 11a and 11b are illustrations of upper and lower straightening rollers, respectively, for U-shaped steel sheet piles having arms in accordance with the present invention.
  • Figure 12 is an illustration of a section of a U-shaped steel sheet pile while correction is carried out with an upper roller.
  • Figure 13 is an illustration of a section of a U-shaped steel sheet pile while correction is carried out with a lower roller.
  • Figure 14 is a graph showing variation of an angle between an arm and a flange with respect to the longitudinal distance.
  • Figure 15 is a graph showing variation of width with respect to the longitudinal distance.
  • Figure 16 is a graph showing variation of an angle between an arm and a flange with respect to the longitudinal distance.
  • Figure 17 is a graph showing variation of width with respect to the longitudinal distance.
  • the pressing force shown by an arrow in Figure 7 is applied to the outer surface 22 of a flange 21 of a U-shaped steel sheet pile 20 to be corrected, and simultaneously a pressing force is applied to the inner surface 23 of the other flange 21 to push it in the same direction.
  • a pressing force is applied to both flanges 21, 21 uniformly, and there is no narrowing in width or no local deformations such as recesses on the flanges 21, 21.
  • the strength of the pressing force applied to the outer surface 22 of one flange 21 may be equal to or larger than that applied to the inner surface 23 of the other flange 21 to some extent.
  • Figure 8 illustrates an example of a jig assembly which can be used in the correcting method of the present invention.
  • the jig assembly comprises a first jig member 24 which comes in contact with and is pressed against the outer surface 22 of a flange 21 of U-shaped steel sheet pile 20 to be corrected, and a second jig member 25 which straddles over the one flange 21 and comes in contact with the inner surface 23 of the other flange 21.
  • the first jig member 24 will be referred to as jig A
  • the second jig member 25 will be referred to as jig B hereunder.
  • jig A and jig B are suitably connected by a connecting section 26.
  • jigs A and B are suitably fitted and are fixed by a bolt 28 screwed through a screw hole 27 which is provided on the side of jig B.
  • Any type of connection of the jigs i.e., integrated types, fitting type, pin and pin hole type, etc. may be employed.
  • the above-mentioned fitting + screw type is preferred, since it is the most simple and reliable among them.
  • jig A and jig B are designed such that they are removable in the connecting section. Alternatively, they may have a one-piece structure.
  • the two jigs may be loosely fitted together so that it is possible to adjust their relative positions.
  • a fluctuation in dimensions of sheet piles to be corrected i.e., variation in width, which are simultaneously applied to an outer surface of one flange and to an inner surface of the other flange, so that it is possible to perform correction of bending efficiently without occurrence of local deformations of the sheet piles to be corrected.
  • Such an arrangement can be achieved, as shown in Figure 9, by employing a so-called sliding type connecting section 26 by which the relative position between jig A 24 and jig B 25 can slightly be adjusted as shown by an arrow, and their position can be fixed by a screw-type fixing mechanism (not shown), for example.
  • Figure 8 illustrates a steel sheet pile having an arm portion between a joint (claw) and a flange
  • the method of the present invention may be applied to a usual U-shaped steel sheet pile (without an arm portion), with modifications of the shape of jigs to some extent in conformity with the shape of a final product, resulting in the same effect as in the case of a pile with an arm.
  • the sheet pile to be corrected is positioned in the form of an upright U, but it may be positioned in the form of a downward U. In the latter case, the top and bottom of the jig members may be reversed in conformity with the reversed shape of the sheet pile to be corrected.
  • FIG 10 is an illustration of an arrangement of straightening rollers for U-shaped steel sheet piles having arms, as an example of a straightening roller of the present invention.
  • a U-shaped steel sheet pile comprising a web 30, flanges 32, an arm 34, and joints 35 is restricted by upper rollers 36, 36, and lower rollers 38, 38 together with outer rollers 40 with respect to the web and flanges as well as the arms.
  • the upper and lower straightening rollers 36, 38 each have a one-piece construction so as to enable the web 30 and flanges 32 to be restricted with the same rollers.
  • each roller 36, 38 is provided with a tapered portion which restricts the arm 34, and correction by repeated bending can be carried out to correct the angle to be the same as that of the final product.
  • FIGs 11a and 11b schematically show an example of such straightening rollers of the present invention.
  • the rollers 36, 38 are provided with a tapered portion having an angle ⁇ .
  • straightening rollers are used to restrict not only a web and flanges but also arms from above and below.
  • straightening rollers are employed to restrict the arm from above and below at an angle different from that of the product.
  • roller axes are aligned in the same vertical plane, but in fact they are arranged in a zigzag pattern.
  • arm portions together with web and flange portions are restricted, and preferably the web and flange portions are restricted by the same rollers from above and below, it is possible to achieve straightening without damage to the cross-sectional shape of a final product, as illustrated in Figures 12 and 13.
  • all portions other than the joint portions are restricted by the roller grooves, it is possible to efficiently correct not only warping in a vertical direction but also slight bending in a longitudinal direction.
  • a jig assembly used in the pressing correction of the present invention comprised jig A and jig B as shown in Figure 8.
  • a conventional method in which only jig A was employed was carried out to remove bending in the longitudinal direction.
  • Table 2 shows bending in the longitudinal direction remaining in the final product after correction by the present invention method and the conventional method. As is apparent from the results shown in Table 2, bending was markedly reduced after correction in accordance with the present invention. In contrast, according to the conventional method, bending remained substantially unchanged even after correction, and instead, malformations such as fluctuations in width and local deformations in the flange surface were found in final products.
  • Table 4 shows bending in the longitudinal direction remaining in the final product after correction by the present invention method and the conventional method. As is apparent from the results shown in Table 4, bending at the edges was markedly reduced after correction in accordance with the present invention, and bending could be corrected in a short time. Thus, according to the present invention, correction of bending can be achieved efficiently.
  • roller correction according to the present invention was applied to U-shaped steel sheet piles having an arm between joint and flange portions.
  • Figure 14 shows variation of the angle between a flange and an arm with respect to longitudinal distance
  • Figure 15 shows variation of width with respect to longitudinal distance
  • Figure 14 is a graph obtained by plotting variation ( ⁇ , degree) of an angle ( ⁇ ) of an arm before and after correction with respect to longitudinal distance (L 0 ) of a U-shaped steel sheet pile.
  • variation was substantially constant regardless of the longitudinal distance.
  • the arm was bent downwardly.
  • the arm was bent upwardly or downwardly in conventional methods ( ), but the tendency of deformation was the same as in this case.
  • Figure 15 is a graph obtained by plotting variation ( ⁇ W 0 ) in width (W 0 ) before and after correction with respect to longitudinal distance (L 0 ) of a U-shaped steel sheet pile.
  • examples of the present invention are indicated by the symbol
  • examples of the conventional method are indicated by the symbol .
  • Figure 16 shows variation ( ⁇ ) of the angle ( ⁇ ) of an arm before and after correction with respect to longitudinal distance (L 0 )
  • Figure 17 shows variation ( ⁇ W 0 ) of the width (W 0 ) before and after correction with respect to longitudinal distance (L 0 ).
  • the symbol indicates the case in which a tapered portion was not provided
  • the symbol "+” indicates the case in which rollers with tapered portions were employed.
  • the arm was bent upwardly or downwardly in the case in which the tapered portion was not provided ( ), but the tendency of deformation was the same as in this case.
  • correcting rollers of the present invention can be used to achieve roller correction of U-shaped steel sheet piles having an arm portion without changes in the sectional shape of the pile, i.e., the width size and the angle between arm and flange portions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Metal Rolling (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP96931237A 1995-09-29 1996-09-18 Method of correcting u-shaped steel sheet pile Expired - Lifetime EP0795364B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03002697A EP1338351B1 (en) 1995-09-29 1996-09-18 Method of correcting U-shaped sheet pile

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP25376495 1995-09-29
JP7253764A JP2874611B2 (ja) 1995-09-29 1995-09-29 腕部を有するｕ形鋼矢板のローラ矯正方法
JP253764/95 1995-09-29
JP343566/95 1995-12-28
JP34356695 1995-12-28
JP07343566A JP3129179B2 (ja) 1995-12-28 1995-12-28 Ｕ型鋼矢板の矯正方法および矯正治具
PCT/JP1996/002680 WO1997012701A1 (fr) 1995-09-29 1996-09-18 Procede de rectification d'empilement de profiles de tole en u

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP03002697A Division EP1338351B1 (en) 1995-09-29 1996-09-18 Method of correcting U-shaped sheet pile

Publications (3)

Publication Number Publication Date
EP0795364A1 EP0795364A1 (en) 1997-09-17
EP0795364A4 EP0795364A4 (en) 1999-06-09
EP0795364B1 true EP0795364B1 (en) 2003-11-12

Family

ID=26541385

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03002697A Expired - Lifetime EP1338351B1 (en) 1995-09-29 1996-09-18 Method of correcting U-shaped sheet pile
EP96931237A Expired - Lifetime EP0795364B1 (en) 1995-09-29 1996-09-18 Method of correcting u-shaped steel sheet pile

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP03002697A Expired - Lifetime EP1338351B1 (en) 1995-09-29 1996-09-18 Method of correcting U-shaped sheet pile

Country Status (7)

Country Link
EP (2) EP1338351B1 (ko)
KR (1) KR100480243B1 (ko)
CN (2) CN1073893C (ko)
AU (1) AU692404B2 (ko)
DE (2) DE69630670T2 (ko)
TW (1) TW346422B (ko)
WO (1) WO1997012701A1 (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010092746A1 (ja) * 2009-02-12 2010-08-19 新日本製鐵株式会社 地中連続壁用鋼材の製造方法
CN103028920B (zh) * 2011-09-30 2016-08-31 鞍钢重型机械有限责任公司 巷道用u形钢支架修复整形机
CN102527773A (zh) * 2011-10-31 2012-07-04 苏州金牛精密机械有限公司 钣金件校正装置
JP5773857B2 (ja) * 2011-12-12 2015-09-02 日立造船株式会社 鋼板ブロックの製造方法
JP6436181B2 (ja) * 2016-06-27 2018-12-12 Ｊｆｅスチール株式会社 鋼矢板の曲がり矯正方法及び曲がり矯正装置
CN109261752B (zh) * 2018-09-06 2020-10-02 安庆美特优智能科技有限公司 新能源用檩条整形设备
CN110052511A (zh) * 2019-03-20 2019-07-26 新乡天丰机械制造有限公司 一种在线调整的腰高矫直装置
EP3974078A4 (en) * 2019-05-20 2022-07-13 JFE Steel Corporation METHOD OF MANUFACTURING A PRESSED COMPONENT AND SHAPE CORRECTION DIE
CN110449490A (zh) * 2019-08-29 2019-11-15 安徽江淮汽车集团股份有限公司 一种u型梁整形工装及相应整形方法
KR20230067643A (ko) * 2020-11-20 2023-05-16 제이에프이 스틸 가부시키가이샤 강널말뚝의 교정 장치, 교정 방법 및 강널말뚝의 제조 방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE332562C (de) * 1920-02-03 1921-02-07 Berlin Erfurter Maschinenfabri Festklemmvorrichtung an Biegemaschinen fuer Profileisen
JPS5427836B2 (ko) * 1973-10-25 1979-09-12
JPS5379759A (en) * 1976-12-24 1978-07-14 Nippon Steel Corp U steel sheet pile correcting process
JPS5476471A (en) * 1977-11-30 1979-06-19 Sumitomo Metal Ind Ltd Roller straightening method for steel shape and vertical roller for use of this method
JPS5570418A (en) * 1978-11-24 1980-05-27 Nippon Kokan Kk <Nkk> Roller leveler for u-type steel sheet pile
JPS582492Y2 (ja) * 1979-12-28 1983-01-17 新日本製鐵株式会社 鋼矢板の幅矯正装置
JPS6163316A (ja) * 1984-09-06 1986-04-01 Kawasaki Steel Corp Ｕ形鋼矢板の矯正ロ−ラ

Also Published As

Publication number Publication date
CN1165489A (zh) 1997-11-19
KR980700137A (ko) 1998-03-30
EP1338351A1 (en) 2003-08-27
EP1338351B1 (en) 2011-04-27
KR100480243B1 (ko) 2005-07-28
AU7000396A (en) 1997-04-28
CN1073893C (zh) 2001-10-31
EP0795364A1 (en) 1997-09-17
DE69638361D1 (de) 2011-06-09
CN1159120C (zh) 2004-07-28
EP0795364A4 (en) 1999-06-09
CN1313152A (zh) 2001-09-19
TW346422B (en) 1998-12-01
DE69630670D1 (de) 2003-12-18
AU692404B2 (en) 1998-06-04
WO1997012701A1 (fr) 1997-04-10
DE69630670T2 (de) 2004-09-30

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