A construction method for the steel-concrete transition section of a separated railway bridge
A construction method and separate technology, applied in bridges, bridge construction, bridge materials, etc., can solve the problems of heavy weight and inability to meet the use requirements, and achieve the effect of fast hoisting and convenient installation
Active Publication Date: 2021-11-16
CHINA RAILWAY SIXTH GRP TIANJIN RAILWAY CONSTR +1
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Problems solved by technology
However, these two structures are mainly used for portal piers with small spans, light steel beams and small cross-sectional dimensions. If the steel beams require a large span and need to cross a busy railway line, in this case, The cross-section of the manufactured steel beam will be relatively wide and heavy. Obviously, the above-mentioned traditional steel-concrete transition section structure can no longer meet the requirements of use.
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[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] like Figure 1-Figure 5 As shown, the separation type railway bridge steel-concrete transition section structure construction method provided by the invention comprises the following steps carried out in order:
[0025] 1) According to the design requirements, the outsourcing steel plate 1 and the temporary steel backing stone 2 are produced by factory method, and then transported to the construction site; the outsourcing steel plate 1 includes the steel box 1-1, the shear plate 1-2 and the connecting piece 1- 3. The steel casing 1-1 is a cuboid box structure with open upper and lower ends. The middle and upper parts of the inner surface protrude outwards to form a plurality of vertically arranged shear plates 1-2. The middle part of the outer surface is separated by a distance of There is a circle of connectors 1-3; the temporary ste...
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A separate railway bridge steel mixed transition section structure construction method.It includes the production of outsourced steel plates and temporary steel pads; wrapped the steel sleeve box with a pier pillar template, and the outsourced steel plate is lifted together with the pier pillar template;The first concrete pouring is performed inside the steel sleeve box; the pier pillar template is removed, and the steel beam is hoisted; the connecting parts on the steel plate and the steel beam are welded; the second concrete pouring and other steps.The effect of the present invention: The steel mixed transition section is set out of the outsourced steel plate on the outside of the pier pillar. The lower part of the outsourced steel plate is poured together with the pier column, and the upper part is welded with the steel beam.Set up temporary steel pads, and can form an overall structure with steel concrete pier columns, and jointly bear the upper load to ensure the overall stability of the lower part of the steel tank arch.Suitable for large span steel beams and cannot be installed at one time.
Description
technical field [0001] The invention belongs to the technical field of railway bridge construction, in particular to a construction method for a separated railway bridge steel-concrete transition section structure. Background technique [0002] A railway bridge is a structure built for railways to cross rivers, lakes, straits, valleys or other obstacles, and to realize the three-dimensional intersection of railway lines and railway lines or roads. Among them, the steel tie arch substructure of the steel tie arch bridge usually adopts reinforced concrete pier + steel beam structure. Since the steel beam is light and the span is small, in order to ensure the effective connection between the steel beam and the reinforced concrete pier, It can also better play the role of temporary support and adjustment of steel beams. Usually, a steel-concrete transition section is set at the connection between the reinforced concrete pier column and the steel beam. The traditional steel-conc...
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IPC IPC(8): E01D21/00E01D101/26
CPCE01D21/00E01D2101/268
Inventor 米万富陈朋戴焕民王小刚姜磊马建军安旭柴九州杨万栋何秀满宋文捷
Owner CHINA RAILWAY SIXTH GRP TIANJIN RAILWAY CONSTR