Separated railway bridge steel-concrete transition section structure construction method
A construction method and a separate technology, applied in the direction of bridges, bridge materials, bridge construction, etc., can solve the problems of heavy weight, unable to meet the requirements of use, etc., and achieve the effect of fast hoisting and convenient installation.
Active Publication Date: 2020-10-13
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] Such as 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 ...
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The invention discloses a separated railway bridge steel-concrete transition section structure construction method. The method comprises the steps of manufacturing an outer wrapping steel plate and temporary steel padstones; wrapping a steel jacket box with a pier stud formwork, and hoisting the outer wrapping steel plate and the pier stud formwork together; hoisting the two temporary steel padstones to the design positions of the two sides in the steel jacket box; pouring concrete into the steel jacket box for the first time; removing the pier stud framework, and hoisting a steel cross beam;welding connecting pieces on the outer wrapping steel plate to the steel cross beam; pouring concrete for the second time and the like. The method has the beneficial effects that the outer wrapping steel plate is arranged on the outer side of the upper portion of the pier stud, the lower portion of the outer wrapping steel plate and the pier stud are poured together, the upper portion is welded tothe steel cross beam, and meanwhile, the connecting pieces are arranged to effectively adjust deviation of the steel cross beam; the temporary steel padstones are arranged in the pier stud and can also form an integral structure with the reinforced concrete pier stud to jointly bear upper loads, so that the overall stability of the lower structure of the steel tie bar arch is guaranteed. The method is suitable for large-span steel beams which cannot be installed in place at a 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...
Claims
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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柴九州杨万栋何秀满宋文捷
Owner CHINA RAILWAY SIXTH GRP TIANJIN RAILWAY CONSTR