Multi-layer bonding composite three-dimensional fabric foundation pit waterproof curtain supporting structure and construction method thereof

Abstract

The invention relates to the technical field of building construction, in particular to a multi-layer bonding composite three-dimensional fabric foundation pit waterproof curtain supporting structureand a construction method thereof. The multi-layer bonding composite three-dimensional fabric foundation pit waterproof curtain supporting structure comprises a plurality of cast-in-situ bored piles and foundation pit connecting parts arranged among the cast-in-situ bored piles and used for connecting the cast-in-situ bored piles; the plurality of cast-in-situ bored piles are uniformly arranged atintervals; and each foundation pit connecting part comprises a strip-shaped foundation trench and a reinforcement cage arranged in the strip-shaped foundation trench, and a plurality of layers of composite three-dimensional fabrics are horizontally arranged in the reinforcement cage; The piles are connected into a whole through the composite three-dimensional fabrics and reinforced concrete, thestrength is improved, and the water stop performance is enhanced; the water stopping capability is improved by about 30%; and the supporting strength of the cast-in-situ bored piles is improved by 15%-20%; Compared with a large-volume concrete structure, the used composite three-dimensional fabric has the advantages that the use amount of concrete is saved, the construction cost is reduced by about 10%, and the environment is improved; and epoxy asphalt is used as an adhesive of each layer of three-dimensional fabric, so that the composite three-dimensional fabric is endowed with relatively strong water stop performance and bonding stability.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a multilayer bonded composite three-dimensional fabric foundation pit waterproof curtain support structure and a construction method thereof. Background technique [0002] With the acceleration of the pace of national urbanization, the surface space is gradually scarce, so the degree of development of the underground space of buildings is getting higher and higher, and foundation pit engineering is an important part of construction engineering and municipal engineering. The surrounding environment in the city is relatively complex, and the slope and anchor cable structure are limited and difficult to construct, and the support method of conventional deep foundation pit engineering is difficult to meet the requirements. Conventional foundation pit support methods include grading, pile-anchor support, steel sheet pile support, soil nail wall support, and double-row pi...

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a multi-layer bonded composite three-dimensional fabric foundation pit waterproof curtain support structure and its construction method. The composite three-dimensional fabric is used as the foundation pit waterproof structure of the water-cutting curtain to solve the problem of traditional cast-in-place piles. The problem of poor water stop effect and high cost

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