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 PDFInfo
- 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
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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
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.
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 |
Family
ID=56476762
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)
| 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)
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|---|---|---|---|---|
| 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 |
-
2015
- 2015-12-17 CN CN201510952916.1A patent/CN105648913A/en active Pending
Patent Citations (5)
| 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)
| 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)
| 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 |