Underground concrete structure expansion joint treatment structure and construction method thereof

Abstract

The invention discloses an expansion joint seepage treatment structure, constructed through a waterstop strip, of an underground concrete structure and a construction method of the expansion joint seepage treatment structure. Firstly, a slant grouting pipe is buried in one side of the seeping expansion joint to below the original buried waterstop strip, and foaming waterstop agents are injected for temporary water stopping; secondly, horizontal galvanized grouting pipes used subsequently are buried on the surface of the other side of the seeping expansion joint at intervals; thirdly, a galvanized steel plate and a sealing rubber plate which each correspond to an opening and are each provided with a V-shaped folding notch are customized, the waterstop sealing rubber plate, the galvanized steel plate and a gasket and a nut of a chemical bolt are sequentially installed, and the steel plate and the rubber plate are fixed in a screwed mode so that the expansion joint can be sealed; and finally, high-viscosity non-cured rubber liquid is injected into the expansion joint with high pressure, and a high-viscosity large-deformation waterproof layer is formed. According to the treatment method, three waterproof layers are formed, the structural design is scientific and ingenious, the construction process is simple, and the cost low. Therefore leakage can be completely prevented, the deformation function of the expansion joint is reserved, and the existing problem of seepage of the expansion joint is effectively solved.

Description

Technical field [0001] The invention relates to the leakage treatment of expansion joints of underground concrete structures, and belongs to the field of concrete structure engineering construction. Background technique [0002] With the rapid development of China's construction industry, the scale of the underground space of buildings is getting larger and larger. In order to solve the temperature, shrinkage stress, settlement and other problems during the construction and use of underground super-long concrete structures or roof structures, as well as structural seismic requirements, According to relevant specifications, expansion joints are generally required to be set at about 50m. Therefore, there are more and more expansion joints in underground structures. The construction of expansion joints basically uses rubber waterstops to stop water. The requirements must be very careful during the construction process. If construction errors occur, It is easy to cause leakage, and c...

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Problems solved by technology

[0002] With the rapid development of my country's construction industry, the scale of the underground space of buildings is getting larger and larger. In order to solve the problems of temperature, shrinkage stress, settlement and other problems during the construction and use of underground ultra-long concrete structures or roof structures, as well as the seismic requirements of structures, According to the requirements of relevant specifications, expansion joints generally need to be set up at about 50m, so there are more and more expansion joints in the underground structure. It is easy to cause leakage, and the current construction management is difficult to meet the requirements; at the same time, after being put into use, due to temperature changes, aging of the waterstop, uneven settlement of the foundation, durability of the material of the waterstop and other factors, it will cause The deformation of the concrete expansion joint and the aging of the material lead to the tearing or disconnection of the original expansion joint waterstop, resulting in leakage of the expansion joint; and the leakage control of the expansion joint has always been a problem that is difficult to completely solve in the project

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