Construction method of staging structures of foundation pit

Abstract

The invention provides a construction method of staging structures of a foundation pit. The construction method of the staging structures of the foundation pit comprises the steps that a row of boundary supporting piles are constructed in the foundation pit; the first-stage structure and the second-stage structure are constructed on the two sides of the row of boundary supporting piles in sequenceso that the first-stage structure and the second-stage structure can temporarily abut against the row of boundary supporting piles in a supporting mode, specifically, when a floor slab of the top layer of the second-stage structure is constructed, the portions, on the floor slab of the top layer of the second-stage structure, of the row of boundary supporting piles are cut away, and the floor slab of the top layer of the second-stage structure is connected to a floor slab of the top layer of the first-stage structure so as to form a completely-closed floor slab; and the portions, on the restof floor slabs of the second-stage structure, of the row of boundary supporting piles are cut away layer by layer from top to bottom, and the rest of floor slabs of the second-stage structure are connected to floor slabs of the first-stage structure layer by layer along with the cutting operation of the boundary supporting piles so as to form completely-closed floor slabs. The construction methodof the staging structures of the foundation pit achieves the purpose that connecting structures of the concrete structures which are constructed in a staging mode in sequence in the same foundation pit are safe and reliable.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for a staged structure of a foundation pit. Background technique [0002] With the acceleration of urban construction, the land resources in the central area of ​​the city are extremely tight, and during the construction process, there are more and more special and complex surrounding environmental problems such as demolition and proximity to the subway. In order to ensure the timely and smooth progress of the project, the method of staged construction is adopted, especially when the staged construction of foundation pits with different depths is carried out, higher requirements are put forward for the connection quality of the concrete structures in the previous and later constructions and the structural safety during the docking. Contents of the invention [0003] In order to overcome the defects existing in the prior art, a construction me...

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Problems solved by technology

[0003] In order to overcome the defects existing in the prior art, a construction method of the staged structure of the foundation pit is provided to solve the problem of safety and reliability of the connection structure of the concrete structure constructed in stages before and after the same foundation pit

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