An integrated prefabricated drainage structure construction method for bridges

Abstract

The invention discloses an integrated prefabricated drainage structure construction method for bridges. The connecting steel bar and the second pre-embedded connecting steel bar are pre-buried in the prefabricated drain hole drain pipe; after the main girder flange plate formwork is installed and the main girder flange plate longitudinal bars and main girder flange plate stirrups are bound, the prefabricated drain is installed. hole drain pipe, connect the first embedded connecting steel bar with the longitudinal reinforcement of the main girder flange plate or the main girder flange plate stirrup, and then pour the main girder concrete; The steel mesh is welded, then the concrete deck is poured, and finally the asphalt concrete is poured. The integrated prefabricated drainage structure obtained by the construction method of the present invention can effectively avoid the main beam disease caused by water leakage at the drainage hole, and the integrated structure facilitates the construction to speed up the progress.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, in particular to an integrated prefabricated drainage structure construction method for bridges. Background technique [0002] The scupper hole and the scupper pipe are an important part of the bridge drainage facilities. They are generally set on the outside of the side beam. The scupper hole and the scupper pipe are connected by post-cast concrete. Chemical adhesive bonding. During operation, the bridge vibration caused by the vehicle load leads to the failure of the connection or the vibration of the post-cast concrete is not tight, so that there are pores between the scupper hole and the scupper pipe, so the bridge surface water seeps along the pores to the bridge flange and web. There are diseases such as water seepage and pan-alkali, which seriously reduce the durability of the structure. It can be seen that there are two aspects to the nature of the above-mentioned diseases. O...

AI Technical Summary

Problems solved by technology

During the operation period, the bridge vibration caused by the vehicle load leads to connection failure or the post-cast concrete is not compacted, so that there are pores between the scupper holes and the drainpipes, so the water on the bridge surface seeps into the bridge flange and web along the pores, and the above parts are generally There are water seepage, efflorescence and other diseases, which seriously reduce the durability of the structure

It can be seen that there are two aspects to the essence of the above-mentioned diseases. One is that there are no effective connection measures between the drain hole and the drain pipe in the design. Failure to take effective measures to block the seepage of water along the crevices

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