Waterproof structure used for bridge expansion joint and adopting TPO coiled material

Abstract

The invention discloses a waterproof structure used for a bridge expansion joint and adopting a TPO coiled material, belonging to the technical field of bridge construction. The waterproof structure of the bridge expansion joint comprises a water receiving tank and a water collecting tank connected with the water receiving tank, wherein the water receiving tank is located at the bottom of the expansion joint and fixedly connected with a beam body, and the middle of the water receiving tank protrudes downwards to form a U shape; the water receiving tank comprises a cement mortar protective layer, the TPO coiled material layer, a cement mortar leveling layer, a steel structure connecting layer and a surface layer from top to bottom, the TPO coiled material layer is made of TPO thermoplastic polyolefin waterproof materials, the two sides of the steel structure connecting layer extend upwards in an inclined mode, the water receiving tank is tightly pressed on a beam body through second ground anchors, and the surface layer is fixedly arranged on the surface of the steel structure connecting layer. By the adoption of the waterproof structure, construction is convenient, a subsequent seam leakage risk is reduced, and the safety of the whole waterproof device is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a bridge expansion joint waterproof structure using TPO coiled material. Background technique [0002] Bridge expansion joints are the connecting parts of the bridge superstructure. The performance of expansion joints not only directly affects the safety and comfort of driving, but also relates to the static and dynamic response of the overall structure of the bridge. Under the influence of rainwater accumulation, vehicle action and untimely operation, management and maintenance, bridge expansion joints have various degrees of disease and damage. Affected by the waterproof and drainage structure, damage to the waterproof material of the expansion joints will cause water seepage in the expansion joints of the bridge, and water seepage in the expansion joints will easily lead to erosion of the girder body, cover beams and bridge piers, which not only affects...

AI Technical Summary

Problems solved by technology

Affected by the waterproof and drainage structure, damage to the waterproof material of the expansion joints will cause water seepage in the expansion joints of the bridge, and water seepage in the expansion joints will easily lead to erosion of the girder body, cover beams and bridge piers, which not only affects the comfort of the bridge deck and the expansion joints. The use function and service life will also affect the structural safety of the bridge

[0003] At present, the bottom of the bridge expansion joints is usually equipped with a water collection tank and a water collection tank for drainage. During the long-term repeated contraction of the bridge, gaps are likely to appear at the connection between the water collection tank and the bridge, which may easily lead to water seepage

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