Pile pulling device and method for reinforced concrete prestressed pipe pile

Abstract

The invention discloses a pile pulling device and method for a reinforced concrete prestressed pipe pile. The pile pulling device comprises a pile pulling device body, an anchor head, a second anchoring body and anchor cables, and the pile pulling device body further comprises a pull module used for applying pull on the anchor cables and a clamping opening used for pulling a pile body. Firstly, a layer of bonding agent is smeared on the inner wall of the bottom of the pile body; then a first anchoring body is cast at the bottom of the pile body, the anchor cables and the anchor head are put into the bottom, and the anchor head and the first anchoring body are bonded; then a casting pipe extends to the bottom of the pile body again to cast the second anchoring body on the anchor head; then the pile pulling device body is erected on the ground, and the clamping opening is arranged on the pile body in a clamping mode; and finally, after the second anchoring body and the first anchoring body are solidified and formed, vertically-upward pull is applied on the anchor cables and the clamping opening simultaneously, and the pull acts on the top and the bottom of the pile body simultaneously, so that the whole pile body is pulled out successfully, and the pile body cannot be damaged or broken due to pulling; and the pile pulling device for the reinforced concrete prestressed pipe pile further has the advantages of being simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to the field of pile pulling equipment, in particular to a pile pulling device and method for reinforced concrete prestressed pipe piles. Background technique [0002] Today's buildings, especially high-rise buildings, mostly have prestressed pipe piles on their soft soil foundations. Among them, the prestressed pipe pile plays an important role in the current construction industry, and its application has also been greatly promoted. However, due to the certain service life of the buildings and the need for renovation of the old city in some areas. New building construction will set up new pile foundations. At this time, the old and new foundations will affect the construction of the new foundation. This requires the removal of the pipe piles embedded in the soil. However, due to the long length of the prestressed pipe piles, the pile body and The soil is highly bonded together, and the tensile bearing capacity of the pile is lo...

AI Technical Summary

Problems solved by technology

However, due to the poor tensile strength of concrete, if the resistance is too large when pulling out the pile, it is easy to cause the pipe pile body to break, so that the entire pipe pile cannot be pulled up, which will affect the construction of new buildings.

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