A repairing structure and repairing construction method for foundation pit supporting and retaining piles

Abstract

The invention discloses a repairing structure for a foundation pit supporting pile. A repairing frame is covered at a crack position of the foundation pit supporting pile. The repairing frame comprises a first iron wire, a second iron wire and a plurality of steel bars, the steel bars are vertically distributed at intervals, the first iron wire and the second iron wire are connected in a head-tail mode and fixed around the foundation pit supporting pile. A repairing mounting ring comprises a left mounting ring and a right mounting ring which are arranged in a semi-annular shape correspondingly, one end of the left mounting ring is hinged to one end of the right mounting ring, the other end of the right mounting ring is connected with a connecting boss, and a locking part for tightening the left mounting ring is arranged at the other end of the right mounting ring.A grouting space for covering the repairing frame is formed among the left mounting ring,the right mounting ring and the foundation pit supporting pile, and a grouting nozzle communicating with the grouting space is formed in the left mounting ring and / or the right mounting ring. A grouting pipe is connected to the grouting nozzle for introducing concrete slurry. According to the key points of the technical scheme,the repairing structurehas the characteristics of high convenience of repair.

Description

technical field [0001] The invention relates to the technical field of building foundations, in particular to a repairing structure and repairing construction method for foundation pit support piles. Background technique [0002] With the rapid development of high-rise buildings, the foundation pit will become larger and deeper, and the construction of the support structure of the foundation pit will become more and more difficult. During the construction process, in order to ensure the construction of the underground structure and the deep foundation pit For the safety of the surrounding environment and the convenience of construction, it is necessary to take support and reinforcement measures for the side wall of the deep foundation pit and the surrounding environment. [0003] The notification number is CN103469798B Chinese patent discloses a foundation pit support structure, including foundation pit support row piles, water and soil stop curtain, and anti-side row piles....

AI Technical Summary

Problems solved by technology

[0004] The above foundation pit supporting row piles are hollow cast-in-situ concrete thin-walled pipe piles. When the excavator excavates the foundation pit, the staff accidentally operates, and the excavator touches the foundation pit supporting row piles. It will lead to cracks in the foundation pit support row piles. If there are too many damaged foundation pit support row piles, the structural strength of the foundation pit support row piles on the entire side will be reduced, resulting in the failure of the foundation pit support row piles. The displacement and inclination of the pile body at the crack will affect the support effect of the foundation pit support and row piles, and there will be safety hazards, so there are certain improvements

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