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Construction method of foundation pit support

A construction method and technology of foundation pit support, which can be applied in basic structure engineering, excavation, construction, etc., can solve the problems of differential settlement and structural damage between the underground diaphragm wall and the main structure, and achieve the effect of reducing the cost and speeding up the construction period

Inactive Publication Date: 2013-09-25
李学波
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Problems solved by technology

In addition, there is a problem of differential settlement between the underground diaphragm wall and the main structure, and improper handling will cause structural damage. How to solve these problems is a subject for engineering and technical personnel

Method used

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specific Embodiment 2

[0027] A commercial building has 28 floors, the building height is 98m, and the total construction area is about 105,000 square meters. There are 2 floors in the basement. , The building foundation adopts bored piles.

[0028] In this embodiment, the underground diaphragm wall 1 around the foundation pit and the temporary columns in the pit are used as the vertical load-bearing system, and the beam plate of the basement's own structural layer is used as the inner support of the foundation pit enclosure, with ±0.00 as the starting surface or the underground The first floor is the starting surface, the construction of the underground structure is carried out from top to bottom, and the construction of the upper main structure is carried out from bottom to top at the same time, forming a parallel three-dimensional operation of the upper part and the lower part. In order to facilitate earthwork excavation and vertical transportation, the concrete of the rib beam of the underground...

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Abstract

The invention discloses a construction method of foundation pit support. The construction method is characterized in that underground continuous walls around a foundation pit and temperature vertical columns in the foundation pit are used as a vertical bearing system, beam plates of structural layers of a basement are used as an inner support for the foundation pit support, an underground structure is constructed from top to bottom by using + / - 0.00 or the first underground floor as a starting face, an upper main structure is constructed simultaneously from bottom to top, and an upper-lower parallel three-dimensional operation is achieved; in order to facilitate earth excavation and vertical transportation, concrete pouring of a ribbed beam part of an underground floor system can be performed firstly to form a horizontal framework inner support, and floor concrete is poured after a basic base plate is completed; the underground continuous walls serve as a support structure and structural outer walls of the basement, and the underground continuous walls and steel vertical columns inserted into engineering piles form the vertical bearing system during construction; the floor the of the basement supports the underground continuous walls, and a large earth outlet hole is reserved in the plane of the floor.

Description

technical field [0001] The invention relates to a foundation pit support, in particular to a foundation pit support construction method. Background technique [0002] The underground diaphragm wall has the characteristics of high structural rigidity, integrity, impermeability and durability. Not only can it be used as a temporary enclosure structure, but it can also be used as a permanent earth-retaining, water-retaining and load-bearing structure, which can adapt to various complex construction environments and hydrogeological conditions. It can be constructed close to existing buildings, and there is basically no noise during construction , No vibration, less impact on adjacent buildings, and can build underground continuous walls of various depths, widths and shapes. Because the underground diaphragm wall has a series of advantages, it is more and more widely used in deep foundation engineering. Since the underground diaphragm wall is constructed in sections, water leak...

Claims

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Application Information

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IPC IPC(8): E02D17/04
Inventor 叶长青
Owner 李学波
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