Recyclable assembled foundation pit support structure

Abstract

The invention relates to a recyclable assembled foundation pit support structure, and belongs to the technical field of buildings. A rectangular prefabricated component, a cross-shaped support and a recyclable anchor rod are included. The rectangular prefabricated component is formed in the manner that concrete is wrapped in a steel body, and bolt holes for mutual connection are reserved. The cross-shaped support is a slot type steel component, an anchor rod hole is reserved in the center part, and bolt holes for mutual connection are reserved in wing edges. The anchor rod is the recyclable anchor rod. The recyclable assembled foundation pit support structure is high in bearing force, reliable in connection, convenient to construct, high in construction speed, detachable and recyclable, and the problem about foundation pit water prevention can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of construction, in particular to a recyclable assembled foundation pit support structure. Background technique [0002] With the gradual acceleration of the urbanization process in our country, the development and utilization of underground space has developed rapidly, the number of foundation pit projects is increasing, and the excavation depth is getting deeper and deeper. The purpose of foundation pit support is to protect the smooth progress of underground structure construction and the safety of the surrounding environment of the foundation pit. It can be divided into temporary support and permanent support. Most of the general projects use temporary support, that is, in the foundation pit During the excavation stage, support measures are adopted for the foundation pit, and the support structure is removed after the foundation pit project is completed. Traditional foundation pit support methods includ...

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Problems solved by technology

This method has the advantages of safety, reliability, economical rationality, and convenient construction, but it has high requirements for the site, which requires the site to be open and the foundation soil quality is relatively good; row pile support is a foundation pit support structure composed of a certain pile type and a queue arrangement. , in terms of materials, including manual excavation piles, bored piles, prefabricated reinforced concrete sheet piles and other forms, but relatively speaking, the cost is high, the utilization rate is low, and the installation and disassembly are cumbersome; the underground diaphragm wall is segmented underground Excavate long and narrow deep grooves, put steel cages in the grooves, and then pour concrete to form reinforced concrete wall sections, and finally connect these wall sections to form a continuous underground wall

In the design process of the underground diaphragm wall, on the one hand, the designer made the reinforcement ratio of the underground diaphragm wall too high for safety considerations, resulting in serious economic waste; on the other hand, the owner required deep foundation pit support structure The economical and reasonable design often causes some unfavorable factors to be neglected in the design process, leading to the occurrence of foundation pit accidents.

In order to avoid accidents, it is necessary to track and monitor the stress and strain of the steel bars of the underground diaphragm wall during the construction process, but this method will cost a lot of money

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