Prefabricated balance beam foundation pit support system

Abstract

The invention provides an assembly type balance beam foundation pit supporting system. The assembly type balance beam foundation pit supporting system comprises a box type circuit purlin beam, saw-shaped connecting pieces, a rectangular connecting piece and diagonal brace and angle brace connecting pieces; the box type circuit purlin beam is used for installing and connecting of the diagonal brace position, the angle brace position and the inverted-v-shaped support position in a foundation pit; the saw-shaped connecting pieces are of a split structure and are located at the angle brace position and the diagonal brace position in the foundation pit to perform installing and connecting of the box type circuit purlin beam; the rectangular connecting piece is of a split structure and is located at the diagonal brace position in the foundation pit to perform installing and connecting of the box type circuit purlin beam; and the diagonal brace and angle brace connecting pieces are of a split structure and are located at the angle brace position and the diagonal brace position in the foundation pit to perform installing and connecting of the box type circuit purlin beam. According to the assembly type balance beam foundation pit supporting system, the saw-shaped connecting pieces, the rectangular connecting piece and the diagonal brace and angle brace connecting pieces of the assembly type balance beam foundation pit supporting system can be conveniently disassembled and assembled, thus the weight of a single element is reduced, and site construction and transportation of elements are facilitated.

Description

technical field [0001] The invention relates to the technical field of engineering construction of foundation pits, in particular to an assembled balance beam foundation pit support system. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base level and foundation plane size. In engineering construction, when the foundation pit is a large foundation pit, it needs to be supported inside the foundation pit to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit. At present, the support methods in the foundation pit mainly include concrete support, traditional steel support, and fish-belly beam steel support. [0003] Among them, the concrete support has the following problems: (1) The waste of resources caused by the demolition of the concrete support / construction waste, etc.; (2) The construction speed is slow due to the binding of steel b...

AI Technical Summary

Problems solved by technology

[0003] Among them, the concrete support has the following problems: (1) The waste of resources caused by the demolition of the concrete support / construction waste, etc.; (2) The construction speed is slow due to the binding of steel bars, formwork, pouring and maintenance, demolition and demolition of the concrete support; (3) There is a lack of large-span structures, and the concrete supports earthwork excavation space is limited, resulting in narrow construction space for underground structures

[0004] The traditional steel support has the following problems: (1) Since the traditional steel support is a non-standard piece that is welded on-site with a circular cross section, its work-related injury rate is high and the safety degree is poor; (2) The construction space of the underground structure is narrow

In addition, it is necessary to excavate after the overall support plane is completed, which wastes the construction period of the main structure

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