Novel unbonded post-tensioning prestress uplift pile structure

A non-bonded, uplift-resistant pile technology, which is applied in foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of easy corrosion of uplift piles and functional failure of uplift piles

Pending Publication Date: 2022-01-25
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a new unbonded post-tensioning prestressed uplift pile structure, which solves the technical problem that the uplift pile is easily corroded during use and causes the function of the uplift pile to fail

Method used

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  • Novel unbonded post-tensioning prestress uplift pile structure
  • Novel unbonded post-tensioning prestress uplift pile structure
  • Novel unbonded post-tensioning prestress uplift pile structure

Examples

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Embodiment 1

[0040] see Figure 1-6 , a new unbonded post-tensioned prestressed uplift pile structure, comprising a pile hole 1, a steel cage 2 is placed in the pile hole 1, concrete is poured in the pile hole 1, the concrete and the The reinforcement cage 2 forms the uplift pile body 3, the bottom of the uplift pile body 3 is provided with a number of pile bottom anchoring devices, and the top of the uplift pile body 3 is provided with a number of pile top anchors corresponding to the plurality of pile bottom anchorage devices. device, the pile bottom anchoring device is provided with an unbonded steel strand 33, and the top of the unbonded steel strand 33 is connected with the pile top anchoring device.

[0041] A new type of unbonded post-tensioned prestressed uplift pile structure provided by the above embodiment, wherein a reinforcement cage 2 is arranged in the pile hole 1, and concrete and the reinforcement cage 2 are poured in the pile hole 1 to form the uplift pile body 3. The st...

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Abstract

The invention relates to a novel unbonded post-tensioning prestress uplift pile structure. The novel unbonded post-tensioning prestress uplift pile structure comprises a pile hole, a reinforcement cage is placed in the pile hole, concrete is poured in the pile hole, the concrete and the reinforcement cage form an uplift pile body, a plurality of pile bottom anchoring devices are arranged at the bottom of the uplift pile body, a plurality of pile top anchoring devices corresponding to the pile bottom anchoring devices are arranged at the top of the uplift pile body, unbonded steel strands are arranged on the pile bottom anchoring devices, and the tops of the unbonded steel strands are connected with the pile top anchoring devices. The technical problem that the uplift pile is prone to rusting in the using process, and consequently the function of the uplift pile fails is solved.

Description

technical field [0001] The invention relates to the technical field of building foundation pile foundations, in particular to a novel unbonded post-tensioning prestressed uplift pile structure. Background technique [0002] In areas with high groundwater levels, the main way to deal with the anti-floating problem of buildings is based on uplift piles. As a main form of anti-floating of building foundations, uplift piles are widely used in engineering practice. The uplift pile is in a state of axial tension during construction or later use, and the pile body is prone to cracks in the tension state. As the crack expands and penetrates through the groundwater, it will penetrate into the pile body, causing the steel bar of the pile body to corrode, which in turn leads to pullout resistance. The pile fails, affecting the safety of the building. [0003] Aiming at cracks in concrete, the traditional solution is to increase the reinforcement of the pile body in large quantities. F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D5/58E02D5/74
CPCE02D5/38E02D5/58E02D5/74
Inventor 余地华汪浩赖国梁叶建陈国祁红伟杨涛张涛黄晓程
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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