Construction method of special-shaped deep foundation pit with limited construction space of adjacent building structure

Abstract

The invention relates to a construction method for a special-shaped deep foundation pit with limited construction space of an adjacent building structure. The construction method comprises the following steps: preparing for construction; building foundation reinforcement construction close to the special-shaped deep foundation pit; underground diaphragm walls and steel latticed columns are constructed; shield crossing area reinforcement construction is reserved for a long time; the special-shaped deep foundation pit is excavated; performing pipeline protection construction; constructing a cover plate hoop type formwork system; and assembling and disassembling the densely distributed steel supports. The construction method has the beneficial effects that for construction of the special-shaped deep foundation pit with limited construction space of the adjacent building structures, the special-shaped deep foundation pit is high in excavation speed, and the adjacent building structures can be effectively prevented from inclining or cracking in the excavation process of the foundation pit; according to the construction method of the special-shaped deep foundation pit adjacent to the building structure with the limited construction space, pipeline protection operation is simple, a cover plate is fast in formwork erecting, the construction quality reliability is high, and the engineering cost can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of urban rail transit, and in particular relates to a construction method for a special-shaped deep foundation pit with limited construction space adjacent to a building. Background technique [0002] With the continuous development of urban construction in our country, the development scale of urban population, housing and infrastructure has been further expanded, and urban rail transit in my country has developed rapidly, but various urban problems associated with it have become more and more serious. Among them, land resources shortage is particularly acute. [0003] In order to solve this problem, on the one hand, it is necessary to ask for resources from high altitude to build high-rise buildings; The area is getting smaller and smaller, the space availability is getting lower and lower, and the surrounding environment of the foundation pit is getting more and more complicated. [0004] Underground eng...

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Problems solved by technology

[0003] In order to solve this problem, on the one hand, it is necessary to ask for resources from high altitudes to build high-rise buildings; The area is getting smaller and smaller, the space availability is getting lower and lower, and the surrounding environment of the foundation pit is becoming more and more complex. The support and construction of the foundation pit of underground engineering are facing more and more difficulties, which has become a current hot engineering issue.

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