Municipal bridge drainage system and construction method

Abstract

The invention discloses a municipal bridge drainage system. The municipal bridge drainage system comprises a bridge body. Collecting ditches are formed in the two sides of the bridge body. The bottom face of each collecting ditch is sequentially provided with a water-permeable brick layer, a sponge filtering layer, a first converging layer, a concrete basic layer and a second converging layer from top to bottom. Multiple rainwater purification devices arranged on land, and an underground converging pipe are further included. The rainwater purification devices are connected to the second converging layer and the underground converging pipe through flow guide pipes. Multiple drainage pipes are further included. The drainage pipes penetrate through the bottom faces of the collecting ditches, the top ends of the drainage pipes are flush with the edge of the bridge body and lower than the edges of the collecting ditches, and the bottom ends of the drainage pipes are communicated with an urban sewer through sewage pipes. Rainwater is collected and purified through the collecting ditches, pressure of municipal drainage is reduced, when all rainwater cannot be drained in time through permeation of the collecting ditches, redundant rainwater is drained into the municipal drainage system from the drainage pipes, and a bridge deck cannot be submerged.

Description

technical field [0001] The invention relates to bridges; in particular, it relates to a municipal bridge drainage system, and also relates to a construction method of the bridge drainage system. Background technique [0002] Bridges are equipped with drainage systems to remove rainwater as soon as possible, avoid rainwater erosion of bridges, and also benefit driving safety. Traditional bridge drainage systems directly discharge rainwater into sewer pipes, which not only increases the burden of urban drainage, but also wastes rainwater. Contents of the invention [0003] The object of the present invention is to provide a bridge drainage system that can quickly drain water, reduce urban municipal drainage burden, and purify part of the rainwater in order to solve the problems in the prior art in the above-mentioned background technology. [0004] The technical solution adopted by the present invention to solve its technical problems is: a municipal bridge drainage system, ...

AI Technical Summary

Problems solved by technology

[0002] Bridges are equipped with drainage systems to remove rainwater as soon as possible, avoid rainwater erosion of bridges, and also benefit driving safety. Traditional bridge drainage systems directly discharge rainwater into sewer pipes, which not only increases the burden of urban drainage, but also wastes rainwater in vain.

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