Anti-floating pile structure of pre-stressed pipe pile and construction method

Abstract

The invention relates to an anti-floating pile structure of a pre-stressed pipe pile. The anti-floating pile structure mainly comprises an expanded file tip, the pre-stressed pipe pile, pile peripheral slurry solids, PVC (polyvinyl chloride) anchor cable holes, a bottom end plate, a top end plate, a middle bearing plate and a foundation raft. The expanded file tip is located at the bottom of the pre-stressed pipe pile. The PVC anchor cable holes and an unbonded pre-stressed anchor cables are evenly arranged on the pile wall of the pre-stressed pipe pile. The pile peripheral slurry solids are arranged on the pile periphery of the pre-stressed pipe pile. The bottom end of the pre-stressed pipe pile is sealed through the bottom end plate, and anchor cable fixing ends for fixing the unbonded pre-stressed anchor cables are arranged on the bottom end plate. The top end plate is arranged at the top of the pre-stressed pipe pile and embedded in the foundation raft. An inserting groove for inserting of the top of the pre-stressed pipe pile is formed on the lower surface of the top end plate, and bonded pre-stressed anchor cables are arranged in a pile core of the pre-stressed pipe pile. The anti-floating pile structure of the pre-stressed pipe pile has good vertical bearing performance and pulling resistance, achieves sufficient whole pile body pulling resistance, and has good technical and economic benefits.

Description

technical field [0001] The invention relates to a prestressed pipe pile anti-floating pile raft structure, which belongs to the field of foundation engineering and is suitable for the anti-floating pile raft construction of building basements, underground garages, sunken squares, underground shopping malls and other projects in soft soil areas with abundant groundwater. Background technique [0002] With the rapid development of urban construction, a large number of high-rise buildings, underground garages, sunken squares, subways, underground shopping malls and other buildings have put forward higher requirements for the utilization of underground space. However, in coastal cities such as Shenzhen, Dalian, and Qingdao, where the underground soil is rich in water and the nature of the soil is soft soil with a large thickness, accidents of tilting and collapse of buildings and structures caused by the buoyancy of groundwater occur frequently. , making the basement anti-floati...

AI Technical Summary

Problems solved by technology

The bearing capacity of the pile end of the pile body is often insufficient, and the settlement is relatively large. At the same time, the reinforcement cage and the prestressed reinforcement will affect each other during construction, which is inconvenient for construction.

Images