CN105648913A - Temporary reinforcement method for transverse partitioning construction of steel box girder bridge - Google Patents

Temporary reinforcement method for transverse partitioning construction of steel box girder bridge Download PDF

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Publication number
CN105648913A
CN105648913A CN201510952916.1A CN201510952916A CN105648913A CN 105648913 A CN105648913 A CN 105648913A CN 201510952916 A CN201510952916 A CN 201510952916A CN 105648913 A CN105648913 A CN 105648913A
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CN
China
Prior art keywords
steel box
girder
reinforcement method
temporary reinforcement
steel
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.)
Pending
Application number
CN201510952916.1A
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Chinese (zh)
Inventor
汪劲丰
张良
向华伟
王敏权
王文浩
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Zhejiang University ZJU
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Zhejiang University ZJU
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Filing date
Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN201510952916.1A priority Critical patent/CN105648913A/en
Publication of CN105648913A publication Critical patent/CN105648913A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00Material constitution of bridges
    • E01D2101/30Metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a temporary reinforcement method for transverse partitioning construction of a steel box girder bridge. The temporary reinforcement method particularly includes the following steps that after transverse partitioning of steel box girders, the two sides of each girder block web are each provided with a diagonal bridging at the interval of one longitudinal reinforcement rib, and the girder block webs are arranged in the cutting positions of the steel box girders; and the fulcrums of the diagonal bridgings are arranged at the joints of transverse partitioning plates and top and bottom plates. After the diagonal bridgings are added, the longitudinal flexural rigidity and transverse torsional rigidity of each girder block basically keep consistent, so that the safety in the hoisting process is guaranteed. After the girder blocks are hoisted to a temporary support, the displacements of the girder blocks are basically consistent, and the displacement difference in the longitudinal welding position and the post-welding residual stress are reduced. The top and bottom plates are welded in a staggered mode, the fatigue stress of a welding seam is increased, and the construction safety of the structure is facilitated.

Description

The horizontal block construction temporary reinforcement method of a kind of steel box girder bridge
Technical field:
When the present invention relates to steel box girder bridge transverse direction block construction, to the horizontal block construction temporary reinforcement method of a kind of steel box-girder of each piece of beam.
Background technology:
Owing to building the restriction of environment, transport condition, lifting ability, steel box girder bridge generally to be adopted the Fast Installation mode of horizontal piecemeal. After the horizontal piecemeal of steel box-girder, because welding requirement must carry out fissure of displacement segmentation, thus part top board and web is caused to there is opening; And often can not ensureing that each piece of beam all comprises 2 pieces with epiplastron, the horizontal torsional strength of each beam block and longitudinal flexural stiffness weaken and have obvious ununiformity. After piecemeal lifting is arranged to temporary support, adjacent each piece of Liang Hanjiefengchu there will be the shift differences can not ignore. Welding can make welding place unrelieved stress excessive by force in this case, greatly reduces bridge work-ing life and security.
Summary of the invention:
The present invention is exactly the defect for overcoming the horizontal block construction of steel box girder bridge, it is proposed that the horizontal block construction temporary reinforcement method of a kind of steel box girder bridge.
The horizontal block construction temporary reinforcement method of a kind of steel box girder bridge, specifically comprises as follows: after the horizontal piecemeal of steel box-girder, and the both sides of beam block web add rib place every a longitudinal direction and arrange a scissors support respectively, and this beam block web is the beam block web of steel box-girder segmentation portion; The fulcrum of scissors support is arranged on the boundary place of transverse wall and roof and floor.
The material that described scissors support adopts is channel-section steel or joist steel;
Described scissors support point of crossing place adopts steel plate by its firm welding;
Described steel box-girder top board divides cutpoint and base plate to divide cutpoint to shift to install;
Described steel box-girder top board divides cutpoint and base plate to divide cutpoint to lay respectively at web both sides and horizontal throw is not less than 400mm.
Useful effect: after adding scissors support, longitudinal flexural stiffness of each beam block and horizontal torsional strength are consistent substantially, ensure that the safety of hoisting process. After each beam block is lifted into temporary support, each beam block displacement is basically identical, reduce longitudinal measure place displacement difference and welding after unrelieved stress. Top, base plate dislocation welding, it is to increase the fatigue stress of weld seam, is conducive to the construction safety of structure.
Accompanying drawing illustrates:
Fig. 1 is girder section schematic diagram;
Fig. 2 is that girder is transversely divided into three pieces, and position view is added in each piece of scissors support;
The support of Fig. 3 scissors longitudinally adds position view along bridge.
Embodiment:
As shown in Figure 1, Figure 2, Figure 3 shows, the horizontal block construction temporary reinforcement method of a kind of steel box-girder, after the horizontal piecemeal of steel box-girder, the both sides of beam block web add rib place every a longitudinal direction and arrange a scissors support respectively, and this beam block web is the beam block web of steel box-girder segmentation portion; The fulcrum of scissors support is arranged on the boundary place of transverse wall and roof and floor, and the material that described scissors support adopts is channel-section steel or joist steel; Scissors support point of crossing place adopts steel plate by its firm welding; Described steel box-girder top board divides cutpoint and base plate to divide cutpoint to shift to install; Steel box-girder top board divides cutpoint and base plate to divide cutpoint to lay respectively at web both sides and horizontal throw is not less than 400mm.

Claims (5)

1. the horizontal block construction temporary reinforcement method of steel box girder bridge, it is characterized in that, the method specifically comprises as follows: after the horizontal piecemeal of steel box-girder, and the both sides of beam block web add rib place every a longitudinal direction and arrange a scissors support respectively, and this beam block web is the beam block web of steel box-girder segmentation portion; The fulcrum of scissors support is arranged on the boundary place of transverse wall and roof and floor.
2. the horizontal block construction temporary reinforcement method of a kind of steel box girder bridge according to claim 1, it is characterised in that: the material that described scissors support adopts is channel-section steel or joist steel.
3. the horizontal block construction temporary reinforcement method of a kind of steel box girder bridge according to claim 1, it is characterised in that: described scissors support point of crossing place adopts steel plate by its firm welding.
4. the horizontal block construction temporary reinforcement method of a kind of steel box girder bridge according to claim 1, it is characterised in that: described steel box-girder top board divides cutpoint and base plate to divide cutpoint to shift to install.
5. the horizontal block construction temporary reinforcement method of a kind of steel box girder bridge according to claim 1, it is characterised in that: described steel box-girder top board divides cutpoint and base plate to divide cutpoint to lay respectively at web both sides and horizontal throw is not less than 400mm.
CN201510952916.1A 2015-12-17 2015-12-17 Temporary reinforcement method for transverse partitioning construction of steel box girder bridge Pending CN105648913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510952916.1A CN105648913A (en) 2015-12-17 2015-12-17 Temporary reinforcement method for transverse partitioning construction of steel box girder bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510952916.1A CN105648913A (en) 2015-12-17 2015-12-17 Temporary reinforcement method for transverse partitioning construction of steel box girder bridge

Publications (1)

Publication Number Publication Date
CN105648913A true CN105648913A (en) 2016-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510952916.1A Pending CN105648913A (en) 2015-12-17 2015-12-17 Temporary reinforcement method for transverse partitioning construction of steel box girder bridge

Country Status (1)

Country Link
CN (1) CN105648913A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106544956A (en) * 2016-10-09 2017-03-29 浙江大学 A kind of horizontal block construction shoveing of steel box-girder is longitudinally arranged method
CN113047186A (en) * 2021-03-24 2021-06-29 华东交通大学 Bridge reinforcing apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102182147A (en) * 2011-03-31 2011-09-14 中铁港航局集团第二工程有限公司 Steel box girder erection method
KR101067001B1 (en) * 2011-02-17 2011-09-22 김찬수 Slave constructing method of steel box girder bridge using steel reinforcement
CN103174093A (en) * 2013-03-14 2013-06-26 中交二航局第四工程有限公司 Mounting device and mounting method of steel box girder in support zone
JP2013142226A (en) * 2012-01-10 2013-07-22 Sumitomo Mitsui Construction Co Ltd Construction method for box girder bridge
CN103669227A (en) * 2013-12-12 2014-03-26 中铁四局集团第二工程有限公司 Bridge reinforced concrete combination section steel box girder slipping locating method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101067001B1 (en) * 2011-02-17 2011-09-22 김찬수 Slave constructing method of steel box girder bridge using steel reinforcement
CN102182147A (en) * 2011-03-31 2011-09-14 中铁港航局集团第二工程有限公司 Steel box girder erection method
JP2013142226A (en) * 2012-01-10 2013-07-22 Sumitomo Mitsui Construction Co Ltd Construction method for box girder bridge
CN103174093A (en) * 2013-03-14 2013-06-26 中交二航局第四工程有限公司 Mounting device and mounting method of steel box girder in support zone
CN103669227A (en) * 2013-12-12 2014-03-26 中铁四局集团第二工程有限公司 Bridge reinforced concrete combination section steel box girder slipping locating method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
曹龙呈: "钢箱梁分段吊装施工关键问题探讨及变形监测研究", 《工程科技Ⅱ辑》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106544956A (en) * 2016-10-09 2017-03-29 浙江大学 A kind of horizontal block construction shoveing of steel box-girder is longitudinally arranged method
CN106544956B (en) * 2016-10-09 2018-03-20 浙江大学 A kind of steel box-girder transverse direction block construction shoveing is longitudinally arranged method
CN113047186A (en) * 2021-03-24 2021-06-29 华东交通大学 Bridge reinforcing apparatus
CN113047186B (en) * 2021-03-24 2022-08-30 华东交通大学 Bridge reinforcing apparatus

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Application publication date: 20160608