A kind of construction method of arc foundation pit support system based on anchor tension structure

Abstract

The invention relates to a construction method of an arc-shaped foundation pit supporting system based on an anchor-pull structure, which comprises a crown beam, a plurality of supporting piles, a prefabricated arc-shaped concrete member, an anchor cable and an anchoring pile. A plurality of supporting piles are vertically arranged at equal intervals along the length direction of the excavation sideline of the foundation pit, and any two adjacent supporting piles are connected by vertically arranged prefabricated arc-shaped concrete members. A plurality of anchoring piles are vertically arranged at equal intervals outside the set distance of the excavation edge of the foundation pit. There are grooves on the vertical connecting lines between the anchoring piles and the supporting piles, which are arranged in a one-to-one correspondence, and the anchoring cables are arranged in the grooves. The second end is anchored with the supporting piles, and the crown beam is poured along the connecting line of the upper ends of the plurality of anchoring piles. The prefabricated arc-shaped concrete components are all prefabricated parts, and the site is pollution-free, which improves the level of on-site civilized construction and accelerates the progress of the project. The arc-shaped foundation pit support system has reasonable stress and high support rigidity, which can give full play to the tensile performance of the anchor cable.

Description

technical field [0001] The invention relates to the technical field of foundation pit support, in particular to a construction method of an arc-shaped foundation pit support system based on an anchor-pull structure. Background technique [0002] In order to protect the construction of the main underground structure and the safety of the surrounding environment of the foundation pit, foundation pit support is generally required, and the pile-anchor support system is one of the common foundation pit support structures. The pile-anchor support system uses anchor cables or bolts to replace the internal support to provide tension for the support piles, thereby effectively controlling the displacement and internal force of the support piles. The supporting pile is used as a soil retaining structure. When the groundwater level of the foundation pit is high, another anti-seepage and plugging structure needs to be set up, resulting in a large amount of engineering and cumbersome proc...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a construction method for an arc-shaped foundation pit support system based on an anchor-tension structure, which solves the problems of cumbersome construction of pile-anchor structures, high cost, and stress caused by anchor cables or anchor rods. loss of technical issues

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