Water-stop and ash-retaining structure for comb-tooth plate expansion joints

Abstract

The invention discloses a waterstop and ash-damping structure used for an expansion joint of a comb plate. The structure comprises a waterstop rubber belt which is paved on the expansion joint of the comb plate, an upwarp section is formed by outwards extending the side of the waterstop rubber belt adjacent to a crash barrier, upwards extends in a gap between the crash barrier and the comb plate along the linear inner edge of the crash barrier, and is closely adhered to the crash barrier, and a thin plate which spans the gaps of the crash barrier and is linearly identical to the inner edge of the crash barrier further covers the outside of the upwarp section. According to the structure, the upwarp of a waterstop rubber belt can prevent rainwater on a bridge floor from directly dripping below the bridge, and the corrosion on a lower structure caused by surfacial waterlogging and ponding formed by dripping the rainwater to the lower structure of the bridge can be prevented; a cross stitch steel plate covers outside the waterstop rubber belt can effectively prevent garbage or dust from entering the waterstop rubber belt in the gap of the crash barrier, so that the influence on the expansion capavity of the expansion joint can be prevented.

Description

technical field [0001] The invention relates to the technical field of bridge engineering construction components, in particular to a water-stop and ash-retaining structure used on comb-tooth plate expansion joints. Background technique [0002] Such as figure 1 and figure 2 As shown, when the traditional comb-tooth plate expansion joint is installed, the steel-structured comb-tooth plate 1 and the water-stop rubber belt 2 below cannot be upturned like the section steel expansion joint, and it is usually broken at the inner edge of the anti-collision barrier 3, adjacent The foam board 4 is embedded in the connection gap of the anti-collision guardrail, and the elastic waterproof sealing paste is embedded in the outer periphery. Due to this kind of structural treatment, rainwater on the bridge deck often drips along the gap between the inner edge of the anti-collision guardrail 3 and the expansion joint of the comb plate, causing water stains on the surface of the lower st...

AI Technical Summary

Problems solved by technology

Due to this kind of structural treatment, rainwater on the bridge deck often drips along the gap between the inner edge of the anti-collision guardrail 3 and the expansion joint of the comb plate, causing water stains on the surface of the lower structure of the bridge; and if the rainwater accumulates on the top surface of the lower structure for a long time , will also cause erosion to the structure itself

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