Anchoring type supporting system based on horizontal anchor cables and counter-force piles and construction method thereof

Abstract

The invention belongs to the technical field of foundation pit engineering, and discloses an anchoring type supporting system based on horizontal anchor cables and counter-force piles and a construction method thereof. The supporting system is composed of supporting piles, the counter-force piles, a supporting pile crown beam, a counter-force pile crown beam and the horizontal anchor cables, wherein the supporting piles are constructed on the side wall of a foundation pit, the supporting pile crown beam is poured on the tops of the supporting piles, the counter-force piles are constructed on a foundation pit outside soil body, the counter-force pile crown beam is poured on the tops of the counter-force piles, and the supporting piles and the counter-force piles are connected into a whole through the horizontal anchor cables penetrating through the supporting pile crown beam and the counter-force pile crown beam. According to the anchoring type supporting system based on horizontal anchor cables and counter-force piles and the construction method thereof, the rigidity and the overturning resistance of single-row supporting piles can be improved, deformation of the foundation pit is effectively controlled, and the defects that a traditional cantilever pile structure is low in overall rigidity and cannot meet the deformation control requirement easily are overcome; and meanwhile, the technical problems that underground pipelines around the foundation pit are complex, land use is limited, and conventional oblique anchor cables cannot be adopted are solved by using the horizontal inhaul cables, and a new thought and a new method are provided for a municipal foundation pit supporting structure.

Description

technical field [0001] The invention belongs to the technical field of foundation pit engineering, and in particular relates to an anchor-pull support system and a construction method thereof. Background technique [0002] With the rapid development of urban construction in our country, the construction land is becoming more and more scarce, and more and more foundation pit projects are constantly appearing. Choosing a reasonable foundation pit support structure to ensure the safety of foundation pits has become the focus of engineering practice. In municipal engineering, foundation pit support is usually restricted by various factors such as geological conditions, land use range, surrounding buildings, and underground pipelines. [0003] Conventional foundation pit support structures include inner support type, cantilever type and anchor type. Due to the complex construction of the internal support structure, the construction quality is difficult to guarantee, it is not co...

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Problems solved by technology

[0004] The invention aims to solve technical problems such as complex construction of the inner support structure, difficulty in controlling the deformation of the pile top of the cantilever structure, and insufficient anchoring length or difficulty in implementation of the anchor cable of the anchor-pull structure, and provides a horizontal anchor cable and reaction pile. The anchor support system and its construction method, the system can enhance the overall rigidity and stability of the support structure, ensure the safety of the support structure and surrounding buildings, and reduce the impact on underground pipelines. At the same time, its construction method has low difficulty and short construction period , low cost and other advantages

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