Straddle type monorail steel-concrete combined track beam and erecting method

Abstract

The invention provides a straddle type monorail steel-concrete combined track beam and an erecting method, and relates to the technical field of track traffic, the straddle type monorail steel-concrete combined track beam comprises a steel beam, a reinforcing mesh and a concrete body, the top face of the steel beam is parallel to the ground, at least one set of shear nails are arranged on the top face of the steel beam, and each set of shear nails are arranged in the length direction of the steel beam; the reinforcing mesh is located above the shear nails, and the end of the reinforcing mesh is connected with the steel beams. And the concrete body is connected with the steel beam through the shear nails and the reinforcing mesh. The mode that the reinforcing mesh and the steel beam are directly connected and the mode that the concrete body is directly poured on the framework formed by the reinforcing mesh are adopted, so that a concentric-square-shaped stirrup used in the prior art is replaced, and the connection stability of the concrete body and the steel beam is improved; the construction step that in the prior art, double steel bars with the diameter phi being 25 mm and the distance being 100 mm need to be arranged in a cast-in-place section is omitted, the pouring difficulty is lowered, and meanwhile the phenomenon that in the prior art, cracks are likely to occur in the cast-in-place section is avoided.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a straddle type monorail steel-concrete combined track beam and an erection method. Background technique [0002] The track beam is both a track and a load-bearing beam, and the straddle-type monorail traffic has the characteristics of "beam-rail integration". The common span of the track beam is about 30m, usually PC track beam, when the span increases to about 40m~60m, the steel-concrete combined track beam is used. [0003] At present, the straddle-mounted monorail steel-concrete composite beam is in the negative bending moment area of ​​the fulcrum, and the concrete must have cracks under tension. However, the solutions to the above problems in the prior art are cumbersome and can only slow down the degree of cracking. At present, there is no one for the above-mentioned Effective solutions to problems. Contents of the invention [0004] The object of the present inve...

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Problems solved by technology

[0003] At present, the straddle-mounted monorail steel-concrete composite beam is in the negative bending moment area of ​​the fulcrum, and the concrete must have cracks under tension. However, the solutions to the above problems in the prior art are cumbersome and can only slow down the degree of cracking. At present, there is no one for the above-mentioned effective solutions to problems

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