Leakproof structure for waterproof-layer expansion joints in cold-region high-speed railway trackless-track subgrade surface

Abstract

The invention discloses a leakproof structure for waterproof-layer expansion joints in the cold-region high-speed railway trackless-track subgrade surface. The leakproof structure comprises a joint sealing plate, a back-up material, an elastic material and a sealing rubber layer which are arranged in the expansion joints from bottom to top, the joint sealing plate is arranged at the bottom of the expansion joints, and two sides of the joint sealing plate are connected with a concrete waterproof layer; two sides of the back-up material are connected with the concrete waterproof layer; two sides of the elastic material are coated with a bonding agent and are bonded with the concrete waterproof layer; the bottom surface and two sides of the sealing rubber layer are respectively bonded with the elastic material and the concrete waterproof layer through the bonding agent; the surface of each of the sealing rubber layer and the concrete waterproof layer is coated with an aging-resistant composite coating. The leakproof structure is good in leakproof effect, high in interface bonding, aging resistant, good in durability, rapid in construction and great in promotion value.

Description

technical field [0001] The invention relates to the field of waterproofing of the subgrade surface of ballastless track of high-speed railway, in particular to a sealing structure for expansion joints of waterproof layer of subgrade surface of ballastless track of high-speed railway in cold regions. Background technique [0002] High-speed railway is a safe, comfortable, fast, efficient, and green transportation mode. It has developed rapidly in recent years. By the end of 2016, the operating mileage had reached 22,000 roads. High-speed railway plays an irreplaceable role in improving people's travel conditions, promoting regional cooperation, optimizing industrial structure, and promoting social and economic development. [0003] The smoothness of ballastless track of high-speed railway seriously affects the ride comfort and safe operation of passengers. The subgrade is the foundation of the ballastless track, and the freezing problem of the subgrade of high-speed railways...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of low freeze-thaw resistance, low durability and weak interface adhesion of the waterproof layer expansion joint sealing structure of the high-speed railway ballastless track subgrade in cold areas, the present invention provides a ballastless track for high-speed railways in cold areas Sealing Structure of Expansion Joints in Waterproof Layer of Subgrade Surface

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