Waterproof and drainage structure at elevated railway bridge column cap

Abstract

The invention relates to a waterproof and drainage structure at an elevated railway bridge column cap, which comprises a water retaining ridge (10) and a drainage assembly, the water retaining ridge (10) is arranged at the top of a column cap (2) and is circumferentially closed, and the horizontal projection of the water retaining ridge (10) surrounds the horizontal projection of a vertical rail joint (5) at the top of the column cap. The drainage assembly comprises a drainage port (11) used for drainage of the area defined by the water retaining ridge (10) and a drainage pipe (12) connected with the drainage port (11). Compared with the prior art, leaked water at the joint is concentrated in a small range through the water retaining ridge, and accumulated water can be rapidly drained and prevented from flowing downwards to a waiting room due to the arrangement of the side type floor drain and the drainage pipe; the water retaining ridge and the column cap are integrally formed and are tight and seamless, and the hidden danger of water leakage is avoided; the water collecting area is open and convenient to clear and dredge; and the cost is basically not increased.

Description

technical field [0001] The invention relates to an elevated railway drainage structure, in particular to a waterproof and drainage structure at the bridge column cap of the elevated railway. Background technique [0002] The track beams and platform beams of viaduct railway bridges are prefabricated and assembled on site. with seams (see figure 1 , 2 ). It is difficult to take effective waterproof measures for the joints, especially the joints at the pier column caps in the vertical rail direction, and usually do not deal with them. However, when there are indoor spaces such as waiting rooms and exit corridors under the elevated railway bridge, it is necessary to ensure that the above-mentioned various joints are tight and watertight. [0003] At present, the commonly used engineering technical measures are as follows (see figure 1 , 2 ): [0004] Technology 1: Set up water guide grooves along the joints to intercept and collect leaking water into the drain pipe; [...

AI Technical Summary

Problems solved by technology

[0010] Technology 2: Metal roofs are usually used, which cannot guarantee a seamless overlap with the pier, and cannot solve the problem of water leakage from the vertical rail to the joint at the column cap;

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