Assembled waterproof bridge expansion joint structure and construction method

Abstract

The invention discloses an assembled waterproof bridge expansion joint structure which is arranged at an expansion joint gap where main beam ends of two bridges are joined, and the waterproof bridge expansion joint structure comprises a rubber layer, toothed comb displacement steel plates and a water guide groove, wherein tops of main beam ends on both sides of the expansion joint gap are formed as notches which are communicated along with the bridge width; steel fiber reinforced concrete is cast to the bottom surfaces of the notches; the toothed comb displacement steel plates are laid and meshed close to the expansion joint gap at beam ends at the top of the steel fiber reinforced concrete; comb tooth ends of the toothed comb displacement steel plates on both sides are arranged in an opposite and staggered insertion manner; the bottoms of the toothed comb displacement steel plates are submerged into the steel fiber reinforced concrete; the top surfaces of the toothed comb displacementsteel plates are parallel to top surfaces of both sides of the steel fiber reinforced concrete; the telescopic rubber layer is covered by the toothed comb displacement steel plates in the notches andthe exposed top surface of the steel fiber reinforced concrete; the water guide groove communicated with the expansion joint gap is formed below the toothed comb displacement steel plates inside theexpansion joint gap at the beam ends.

Description

technical field [0001] The invention relates to the field of expansion joint devices, in particular to an assembled waterproof bridge expansion joint structure and a construction method. Background technique [0002] Expansion joints are an important part of the bridge structure, ensuring the normal expansion and contraction function of the beam body. Under the repeated action of load and environment, the expansion joint structure is prone to damage, and the waterstop is easy to age, resulting in water leakage at the beam end and causing steel plates or steel bars at the beam end to be damaged. Corrosion, whitening of the surface of the lower structure of the bridge, water stains and other diseases, in severe cases, will lead to the filling of debris at the end of the beam, affecting the normal expansion and contraction function of the structure, and ultimately affecting the safety of the structure. [0003] In bridge expansion joint maintenance projects, the main diseases o...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a prefabricated waterproof bridge expansion joint structure and construction method to solve the problems that the existing expansion joints are easy to accumulate water, the process is complicated when the whole is replaced, the structure of the beam end is easily destroyed, and the gaps at the beam end are filled with construction waste. question

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