Top locking and anchoring mode of pressure type anti-floating pile

Abstract

The invention relates to a top locking and anchoring mode of a pressure type anti-floating pile. According to the mode, a locking short steel pipe is arranged in the center of the top of an anti-floating pile, an unbonded steel strand is arranged in the steel pipe and penetrates through the steel pipe to extend into a foundation, the steel pipe top is arranged in the foundation, the steel pipe bottom is arranged in the anti-floating pile, and the steel pipe is filled with concrete. Before the foundation is poured, the unbonded steel strand is temporarily tensioned and locked at the top of the locking short steel pipe through an anchor plate and an anchorage device; and after the foundation is poured, the steel strand is permanently anchored in the foundation through the arranged anchor plate and the anchor device. A conventional pressure-bearing pile anchor usually locks a steel strand above a foundation bottom plate, the process is complex, the waterproof construction difficulty is large, the effect is poor, and bottom plate leakage is often caused, however, according to the application, the steel strand is locked and anchored in the foundation by arranging the locking short steel pipe, waterproof construction can be conducted along the periphery of the steel pipe, waterproof construction is easy and convenient, the quality is reliable, and the effect is good; the locking and waterproof problems are effectively solved, and meanwhile the risk of prestress loss is greatly reduced.

Description

technical field [0001] The application relates to a locking method of anti-floating piles and anti-floating anchor rods of buildings, municipal engineering, underground engineering and towering structures in construction engineering, and specifically relates to a top locking and anchoring method of pressure-type anti-floating piles. Background technique [0002] At present, the main treatment methods to solve the anti-floating problem of underground structures include anti-floating slab method, pressure weight method, drainage pressure limiting method, water isolation and pressure control method and water release and pressure reduction method, anti-floating anchor method, anti-floating pile method, etc. . In actual engineering, anti-floating pile method or anti-floating anchor method is the most commonly used method to solve the problem of anti-floating foundation. However, since the implementation of the "Building Engineering Anti-floating Technical Standards" (JGJ476-2019...

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Problems solved by technology

[0004] This application provides a top locking and anchoring method for pressure-type anti-floating piles, which can overcome the problems of difficult foundation waterproof construction, poor waterproof effect, easy leakage, and easy loss of prestress under the existing locking method.

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