CN101210416B - Semi-flexible supporting device for large span steel box girder incremental launching method construction - Google Patents
Semi-flexible supporting device for large span steel box girder incremental launching method construction Download PDFInfo
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- CN101210416B CN101210416B CN2007101689755A CN200710168975A CN101210416B CN 101210416 B CN101210416 B CN 101210416B CN 2007101689755 A CN2007101689755 A CN 2007101689755A CN 200710168975 A CN200710168975 A CN 200710168975A CN 101210416 B CN101210416 B CN 101210416B
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Abstract
The invention relates to a semi-flexible support device for incremental launching construction of large-span steel box girder, in particular to an incremental launching construction device for large-span steel box girder or steel structure. The device consists of, from bottom to top, a steel longitudinal girder, a rubber board, a stainless plate, a steel washer girder and a composite sliding plate. The steel box girder needs to be supported at a plurality of points at the horizontal direction in the incremental launching process, and the bottom of the steel box girder slides on the top surface. The inventive stainless steel plate and a steel washer form a friction pair with the bottom of the tetrafluoroethylene composite sliding plate to reduce the sliding friction. The stainless steel plate and the steel washer girder comply with the deformation curve of the steel box girder, and better bonding is formed between the stainless steel plate and the steel washer girder to enhance the rigidity of the invention and prevent the occurrences of breakage and blockage of the tetrafluoroethylene composite sliding plate. The invention can produce a certain deformation under pressure, which can adjust the counter force on each pivot of the steel box girder, so that the each device of the steel box girder in the incremental launching process has uniform force to ensure the smooth execution of the incremental launching process.
Description
Technical field
The present invention relates to the incremental launching construction device of a kind of large span steel box beam or steel work.
Background technology
The incremental launching method bridge Construction Technology is used in the construction of prestressed concrete continuous beam bridge more.Along with the development of national economy and bridge Construction Technology, modern large-span steel box girder bridge increases gradually, and incremental launching method also obtains attempting in the construction of large-span steel box girder bridge and development.For self-anchored suspension bridge, general adopt install earlier the steel stiff girder, after set up main push-towing rope, carry out the job practices of system conversion at last.Its large span steel box beam is particularly suitable for adopting the incremental launching method technology, can further promote the use of; One of key technology that steel case back pushes away construction is exactly to manage to make each support reaction of steel case beam to be tending towards evenly, avoids occurring excessive concentrated counter-force, the structure of steel case beam is produced harm.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide a kind of each support reaction of steel case beam, peak clipping of regulating and mend paddy, make the large span steel box girder incremental launching method construction semi-flexible supporting device of pushing tow smooth implementation.
The implementation of the object of the invention is, the large span steel box girder incremental launching method construction semi-flexible supporting device is made of steel longeron 4, rubber tile 3, corrosion resistant plate and steel bearing beam 2 and composite slide-plate 1 from bottom to up, and steel longeron 4 is fixedlyed connected with rubber tile 3.
Steel case beam vertically need have multi-point support in the pushing tow process; There is slip steel case beam 11 bottom surfaces at semi-flexible supporting device 12 end faces.Corrosion resistant plate of the present invention and steel bearing beam 2 constitute friction pair with tetrafluoroethene composite slide-plate 1 bottom surface, reduce force of sliding friction; Corrosion resistant plate and steel bearing beam 2 meet steel case beam deformation curve, and bonding is preferably arranged between corrosion resistant plate and the steel bearing beam, strengthen rigidity of the present invention, avoid the tetrafluoroethene composite slide-plate fracture and choking phenomenon to occur.
Produce certain deformation behind the pressurized of the present invention, this deformation energy makes stressed being tending towards of each supporting arrangement of steel case beam in the pushing tow evenly improve the stressed of steel case beam and supporting arrangement structure; The present invention can regulate each support reaction of steel case beam, paddy is mended in peak clipping, makes the pushing tow smooth implementation.
The present invention is applicable to large span steel box girder incremental launching method construction, also can be applicable to the construction of large-span steel structure incremental launching method.
Description of drawings
Fig. 1 a is a texture edge schematic diagram of the present invention
Fig. 1 b is a structural plan of the present invention schematic diagram
Fig. 1 c is a structure elevational schematic view of the present invention
Fig. 2 is with pushing steel box girder arrangement diagram of the present invention
The specific embodiment
With reference to Fig. 1 a, b, c, the present invention is made of steel longeron 4, rubber tile 3, corrosion resistant plate and steel bearing beam 2 and composite slide-plate 1 from bottom to up, and steel longeron 4 is fixedlyed connected with rubber tile 3.Parts annexation of the present invention: form by structure, take the mode of successively shelving from bottom to up, wherein steel longeron 4 is taked to fixedly connected with 8 of distribution beam, and the deformation curve of steel case beam base plate coincide in corrosion resistant plate and steel bearing beam 2 end face line styles and the supporting slide track scope.
Composite slide-plate 1 is made up of steel sheet folder ebonite board and bottom tetrafluoroethene plate, and its effect is the frictional force that reduces between steel case beam 11 and the composite slide-plate 1.Composite slide-plate is relative static with steel case beam during incremental launching construction, and steel case sill bolt composite slide-plate and slided on corrosion resistant plate of the present invention, constantly feeds the plug composite slide-plate between rubbing surface, makes the smooth slippage of steel case beam.
The corrosion resistant plate of 3 millimeters thick sticks on forms corrosion resistant plate and steel bearing beam 2 on the steel bearing beam of scraping, corrosion resistant plate and steel bearing beam adhesion strength 〉=1MPa, surface coefficient of friction resistance μ≤0.02, (corresponding one by one with right 3) its function is to constitute friction pair with tetrafluoroethene composite slide-plate 1 bottom surface, reduce force of sliding friction, slide plane is coated with silicone grease.
Corrosion resistant plate and steel bearing beam 2 and steel longeron 4 coincide to be provided with by steel case beam bottom deformation calculated curve in the scope of the invention and to scrape, downward circular arc all is processed at the angle on the two ends of corrosion resistant plate and steel bearing beam 2 and steel longeron 4, arc radius 500mm, four jiaos of discrepancy in elevation and planeness＜1mm.Its function meets steel case beam deformation curve, with corrosion resistant plate bonding is preferably arranged, and strengthens the rigidity of supporting arrangement, avoids composite slide-plate fracture and choking phenomenon to occur.
End face of the present invention is pressed steel case beam and is calculated deformation curve match setting, but because the distortion of the steel case beam in each stage of pushing tow and inconsistent, so supporting arrangement (slideway) need have rotating function and bigger flexibility.For this reason, between steel bearing beam and steel longeron, be provided with rubber tile 3, allow the compressive strain of rubber offset the gap of coming to nothing between the steel case beam and the present invention in the pushing tow process, during enforcement the front end rubber cushion blocks is carried out unidirectional spacing.The thickness of rubber cushion blocks and modulus of elasticity are selected to determine by calculating.
With reference to Fig. 1 a, b, c, Fig. 2 during with incremental launching construction steel case beam of the present invention, is arranged in steel case beam both sides, and side is arranged draw-gear 6 and cross spacing device 5.Realize incremental launching construction by draw-gear 6 traction steel case beam vertical shifts; Cross spacing device 5 carries out steel case beam and laterally rectifies a deviation in implementing the incremental launching construction process.Interim pier 10 is made up of steel pipe column 9 and intercolumniation bracing 7, and Dun Ding arranges distribution beam 8 conduction loads.Composite slide-plate 1 is relative static with steel case beam in incremental launching construction, and steel case sill bolt composite slide-plate and slided on steel bearing beam end face corrosion resistant plate, constantly feeds the plug composite slide-plate between rubbing surface, makes the smooth slippage of steel case beam; In this process, corrosion resistant plate and steel bearing beam 2, rubber tile 3, steel longeron 4 do not have relative to each other and vertically move.
Claims (3)
1. large span steel box girder incremental launching method construction semi-flexible supporting device, it is characterized in that constituting by steel longeron (4), rubber tile (3), corrosion resistant plate and steel bearing beam (2) and composite slide-plate (1) from bottom to up, steel longeron (4) is fixedlyed connected with rubber tile (3), composite slide-plate (1) is by pressing from both sides four layers of composite plate that ebonite board, the bonding polyfluortetraethylene plate in bottom surface are constituted in two steel sheets, and corrosion resistant plate sticks on forms corrosion resistant plate and steel bearing beam (2) on the steel bearing beam of scraping.
2. large span steel box girder incremental launching method construction semi-flexible supporting device according to claim 1 is characterized in that 3 millimeters of stainless steel thicknesss of slab, corrosion resistant plate and steel bearing beam adhesion strength 〉=1MPa, surperficial coefficient of friction resistance μ≤0.02.
3. large span steel box girder incremental launching method construction semi-flexible supporting device according to claim 1, it is characterized in that downward circular arc all is processed at the angle on the two ends of corrosion resistant plate and steel bearing beam (2) and steel longeron (4), arc radius 500mm, four jiaos of discrepancy in elevation and planeness＜1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101689755A CN101210416B (en) | 2007-12-20 | 2007-12-20 | Semi-flexible supporting device for large span steel box girder incremental launching method construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101689755A CN101210416B (en) | 2007-12-20 | 2007-12-20 | Semi-flexible supporting device for large span steel box girder incremental launching method construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101210416A CN101210416A (en) | 2008-07-02 |
| CN101210416B true CN101210416B (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101689755A Active CN101210416B (en) | 2007-12-20 | 2007-12-20 | Semi-flexible supporting device for large span steel box girder incremental launching method construction |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463589B (en) * | 2008-12-25 | 2010-12-08 | 路桥华南工程有限公司 | Adjustable slipper block for jacking complicated vertical camber beam and method for producing the same |
| CN101892634B (en) * | 2010-07-30 | 2012-02-29 | 中铁上海工程局第一工程有限公司 | Top pushing mechanism of steel box girder of single longitudinal clapboard on wide bridge deck and top pushing method |
| CN102071642B (en) * | 2010-12-16 | 2013-01-23 | 河南省新开元路桥工程咨询有限公司 | Improvement method for slideway during pushing construction of steel truss girder |
| CN102140779B (en) * | 2011-01-14 | 2012-11-28 | 中铁大桥局集团第六工程有限公司 | Movable cast-in-situ support and movable construction method of box girder cast-in-situ support |
| CN102493348B (en) * | 2011-12-14 | 2014-12-10 | 中铁大桥局股份有限公司 | Transverse limitation and correction device for incremental launching of bridge |
| CN103510472B (en) * | 2013-09-26 | 2016-04-13 | 中铁建设集团有限公司 | A kind of can automatic deviation correction incremental launching construction guiding carriage |
| CN103669216A (en) * | 2013-11-21 | 2014-03-26 | 中建三局建设工程股份有限公司 | Steel box girder scattered-splicing sliding device and installation method |
| CN103614970B (en) * | 2013-12-10 | 2016-03-02 | 中铁二十局集团第一工程有限公司 | Steel truss girder assembling construction longitudinal pull and lateral pushing sliding system |
| CN105986549A (en) * | 2016-01-07 | 2016-10-05 | 中铁四局集团钢结构有限公司 | Method for controlling changes in three-truss height difference of combined highway and railway bridge for structural system |
| CN109736212B (en) * | 2019-01-21 | 2023-09-19 | 郭正兴 | Rolling friction type walking pushing device for bridge segment installation |
| CN112267386B (en) * | 2020-11-19 | 2022-03-25 | 中国铁建大桥工程局集团有限公司 | Pushing device and steel box girder pushing method |
| CN112921828B (en) * | 2021-02-07 | 2022-06-03 | 中铁四局集团有限公司 | Flexible landing pad device for erecting ultrahigh bearing support on cantilever of large-span railway steel truss girder bridge |
| CN116289631B (en) * | 2023-05-06 | 2023-08-11 | 合肥城建投资控股有限公司 | Step-by-step pushing construction device for steel box girder |
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2007
- 2007-12-20 CN CN2007101689755A patent/CN101210416B/en active Active
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| CN101210416A (en) | 2008-07-02 |
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Owner name: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Free format text: FORMER OWNER: CHINA ZHONGTIE MAJOR BRIDGE ENGINEERING CO., LTD. Effective date: 20150204 |
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Effective date of registration: 20150204 Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 430050 No. 38, Hanyang Avenue, Wuhan, Hubei Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. |