Anchor tensioning device for integrated pipe pile

Abstract

The invention belongs to the technical field of pile foundations, and provides an anchor tensioning device for an integrated pipe pile. The device comprises a set of precast concrete members and pilesA, wherein the precast concrete members form a pile body, and each precast concrete member comprises a pile batten plate, an anti-slip constraint ring and an end pressing seat, the pile batten platesare vertically and annularly arranged on the periphery of the annular pipe pile, the end pressing seats are located at the bottom end of the integrated pipe pile and bears end resistance, the pile batten plates are restrained and fixed in the vertical direction and the radial direction, the anti-sliding restraining rings are horizontally arranged at the up-down splicing positions of the pile batten plates and restrain vertical and radial displacement of the pile batten plates, the anchor tensioning device tensions and integrates all concrete members into the pile body, and the piles A are arranged on the peripheries of the pile batten plates and the inner side of pile hole wall soil body and used for transmitting positive pressure and frictional resistance of the pile hole wall soil body.The device has the advantages of cost reduction, convenient construction, energy saving, environmental protection, quality improvement, reduction of on-site manual operation, and has substantial economic and social benefits.

Description

technical field [0001] The invention relates to pile foundation technology, in particular to an anchor tensioner for an integrated pipe pile and a construction method for the pipe pile. Background technique [0002] Large-diameter piles in civil engineering are widely used in the foundations of buildings, bridges, ports and large structures. So far, the construction methods are mostly after drilling holes on site, then inserting steel cages into the pile holes, and pouring concrete on site. This method, under some extreme conditions, is difficult to construct, and the quality of concrete pouring is difficult to guarantee, and the construction speed is also slow. Especially in some karst cave areas, the concrete is easily lost into the soil (rock) cave before it solidifies, causing quality accident. However, for some large-diameter uplift piles, a large number of steel bars need to be configured, and the project cost is high. On the other hand, the core concrete of the larg...

AI Technical Summary

Problems solved by technology

This method, under some extreme conditions, is difficult to construct, and the quality of concrete pouring is difficult to guarantee, and the construction speed is also slow. Especially in some karst cave areas, the concrete is easily lost into the soil (rock) cave before it solidifies, causing quality accident

For some large-diameter uplift piles, a large number of steel bars need to be configured, and the project cost is high.

On the other hand, the core concrete of the large-diameter concrete pile plays little or no role, resulting in waste of material

[0003] Existing prefabricated pipe piles generally have a small diameter and are mechanically placed in construction, so they are difficult to apply when encountering rock layers or hard soil layers

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