EP1338351A1 - Verfahren zur Korrektur von U-förmigen Stahlspundbohlen - Google Patents

Verfahren zur Korrektur von U-förmigen Stahlspundbohlen Download PDF

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Publication number
EP1338351A1
EP1338351A1 EP03002697A EP03002697A EP1338351A1 EP 1338351 A1 EP1338351 A1 EP 1338351A1 EP 03002697 A EP03002697 A EP 03002697A EP 03002697 A EP03002697 A EP 03002697A EP 1338351 A1 EP1338351 A1 EP 1338351A1
Authority
EP
European Patent Office
Prior art keywords
roller
steel sheet
arm
shaped steel
straightening
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.)
Granted
Application number
EP03002697A
Other languages
English (en)
French (fr)
Other versions
EP1338351B1 (de
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
Publication of EP1338351A1 publication Critical patent/EP1338351A1/de
Application granted granted Critical
Publication of EP1338351B1 publication Critical patent/EP1338351B1/de
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 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.
  • An objectof 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 present invention is a method of correcting malformation of U-shaped stell 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.
  • FIG. 7 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 8a and 8b schematically show an example of such straightening rollers of the present invention. Compared with the case shown in Figure 7, it is noted that the rollers 36, 38 are provides 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 9 and 10.
  • 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.
  • roller correction according to the present invention was applied to U-shaped steel sheet piles having an arm between joint and flange portions.
  • Fiure 11 shows variation of the angle between a flange and an arm with respect to longitudinal distance
  • Figure 12 shows variation of width with respect to longitudinal distance
  • Figure 11 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 (0), but the tendency of deformation was the same as in this case.
  • Figure 12 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 •, and examples of the conventional method are indicated by the symbol 0. In the case of the present invention, there was substantially no variation.
  • Figure 13 shows variation ( ⁇ ) of the angle ( ⁇ ) of an arm before and after correction with respect to longitudinal distance (L 0 )
  • Figure 14 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.
  • Correctiong 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.
  • the present invention has a marked effectiveness from an industrial point.

Landscapes

  • 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)
EP03002697A 1995-09-29 1996-09-18 Verfahren zur Korrektur von U-förmigen Stahlspundbohlen Expired - Lifetime EP1338351B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
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
JP25376495 1995-09-29
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
JP34356695 1995-12-28
EP96931237A EP0795364B1 (de) 1995-09-29 1996-09-18 Verfahren zur korrektur einer u-förmigen spundbohle aus stahl

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP96931237A Division EP0795364B1 (de) 1995-09-29 1996-09-18 Verfahren zur korrektur einer u-förmigen spundbohle aus stahl
EP96931237.0 Division 1997-04-10

Publications (2)

Publication Number Publication Date
EP1338351A1 true EP1338351A1 (de) 2003-08-27
EP1338351B1 EP1338351B1 (de) 2011-04-27

Family

ID=26541385

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96931237A Expired - Lifetime EP0795364B1 (de) 1995-09-29 1996-09-18 Verfahren zur korrektur einer u-förmigen spundbohle aus stahl
EP03002697A Expired - Lifetime EP1338351B1 (de) 1995-09-29 1996-09-18 Verfahren zur Korrektur von U-förmigen Stahlspundbohlen

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP96931237A Expired - Lifetime EP0795364B1 (de) 1995-09-29 1996-09-18 Verfahren zur korrektur einer u-förmigen spundbohle aus stahl

Country Status (7)

Country Link
EP (2) EP0795364B1 (de)
KR (1) KR100480243B1 (de)
CN (2) CN1073893C (de)
AU (1) AU692404B2 (de)
DE (2) DE69638361D1 (de)
TW (1) TW346422B (de)
WO (1) WO1997012701A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102301071B (zh) * 2009-02-12 2014-01-29 新日铁住金株式会社 地下连续墙用钢材的制造方法
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 (de) * 2019-05-20 2022-07-13 JFE Steel Corporation Verfahren zur herstellung eines gepressten bauteils und formkorrekturwerkzeug
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
JP7260858B2 (ja) * 2020-11-20 2023-04-19 Ｊｆｅスチール株式会社 鋼矢板の矯正装置、矯正方法および鋼矢板の製造方法

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 (de) * 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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
No relevant documents disclosed *

Also Published As

Publication number Publication date
DE69630670D1 (de) 2003-12-18
AU692404B2 (en) 1998-06-04
DE69638361D1 (de) 2011-06-09
AU7000396A (en) 1997-04-28
CN1073893C (zh) 2001-10-31
EP1338351B1 (de) 2011-04-27
WO1997012701A1 (fr) 1997-04-10
TW346422B (en) 1998-12-01
KR980700137A (ko) 1998-03-30
EP0795364A4 (de) 1999-06-09
EP0795364B1 (de) 2003-11-12
EP0795364A1 (de) 1997-09-17
DE69630670T2 (de) 2004-09-30
CN1165489A (zh) 1997-11-19
CN1313152A (zh) 2001-09-19
CN1159120C (zh) 2004-07-28
KR100480243B1 (ko) 2005-07-28

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