Sealed waterproof method and sealed waterproof structure of bridge-beam longitudinal joint

Abstract

The invention discloses a sealed waterproof method and a sealed waterproof structure of a bridge-beam longitudinal joint. The sealed waterproof method of the bridge-beam longitudinal joint comprises the following steps that step A, the surface of the longitudinal joint (1) is cleaned; step B, a sealing part (2) is arranged in the longitudinal joint (1) to close the longitudinal joint, wherein the sealing part (2) is made of an elastomer material or a waterproof expanding material; step C, a railway ballast cover plate (3) is used for covering the longitudinal joint (1). By the adoption of the sealed waterproof method and the sealed waterproof structure of the bridge-beam longitudinal joint, good sealing and water proofing of the bridge-beam longitudinal joint can be achieved, and the durability of a bridge structure is ensured.

Description

technical field [0001] The invention relates to the field of bridge waterproofing, in particular to a method for sealing and waterproofing longitudinal seams of bridges and a sealing and waterproof structure. Background technique [0002] There are many factors affecting the quality of bridge structures. Freeze-thaw cycle damage, steel corrosion, alkali-aggregate reaction, and concrete carbonation have been regarded as the main durability problems of bridge structures. In actual engineering, concrete defects such as water seepage on the bridge deck and peeling off of the protective layer often occur. Facts have proved that water infiltration is one of the most direct and main causes of road and bridge structural damage. The engineering practice of highway and railway concrete bridges at home and abroad shows that establishing an effective overall waterproof and drainage system of the bridge deck is one of the important means to improve the durability of concrete bridges. T...

AI Technical Summary

Problems solved by technology

The traditional sealing method for longitudinal joints is to fill the gap space with filler, and then cover the metal cover plate or concrete slab to prevent the ballast from falling, but the cover plate is simply fixed above the longitudinal joint, which is prone to water leakage. The pores of the fillers between the joints are also easy to retain water, causing the beam concrete to be easily eroded by flowing water to generate cracks and corrode the steel bars, which will have a long-term impact on the durability of the bridge structure and ultimately affect the structural bearing capacity

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