Open cut prefabricated underground structure

Abstract

An open excavation prefabricated underground structure comprises prefabricated components, connection elements, auxiliary elements, waterproof elements and joint reinforcement parts. The prefabricated components are prefabricated solid blocks in certain geometrical shapes and structures; the connection elements are used for connection of adjacent prefabricated components to enable the prefabricated components to form a spatial structure; the auxiliary elements are used for assisting in quick and precise assembling and functional convenience of the prefabricated components; the waterproof elements are waterproof sealing gasket waterproof devices mounted at component joints in assembling of the prefabricated components; the joint reinforcement parts are filling materials in annular or longitudinal joints among the prefabricated components. The open excavation prefabricated underground structure has the advantages that high efficiency, high quality, low resource consumption and low environmental influence of underground engineering can be realized; multi-layer multi-span open excavation prefabricated structure can be realized; the prefabricated components are high in quality and good in durability and waterproof effect, and quick assembly on a construction site can be realized; engineering construction quality in winter can be effectively improved, and potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a technique for forming an underground structure by assembling a plurality of prefabricated components in an open-cut foundation pit. Background technique [0002] At present, my country's urban underground engineering has entered a period of rapid development, and the construction of underground engineering generally adopts open-cut method, shallow buried underground excavation method, shield method, etc. The open-cut method and the shallow buried method generally adopt the cast-in-place concrete structure system for construction. The construction of cast-in-place concrete structures, from scaffolding, formwork, tying of steel bars to concrete pouring, most of the work is done by manual labor, and there are a series of problems as follows: noise disturbs residents, dust pollution; formwork turnover consumes a lot; Much labor, high labor intensity, a...

AI Technical Summary

Problems solved by technology

The construction of cast-in-place concrete structures, from scaffolding, formwork, tying steel bars to concrete pouring, most of the work is done by manual labor, and there are a series of problems as follows: noise nuisance, dust pollution; formwork turnover consumption is large; A lot of labor, high labor intensity, and high proficiency requirements; slow construction speed, long construction period, greatly affected by natural conditions; difficult control of concrete appearance and internal quality; serious waste of construction materials on site and other defects; poor waterproof structure ; The degree of mechanization is not high

Especially in cold regions, the outstanding problems faced by underground structure construction are: the quality of winter construction is difficult to guarantee; the construction period is long when the winter break is crossed; the use of greenhouses and other measures in winter construction may cause fires; the open-cut method cannot be completed within a year , resulting in multi-year road construction; poor social and economic benefits

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