Vibrating casing for pulling out piles and high-pressure water jetting for pulling out piles

Abstract

The invention discloses a vibrating sleeve for pile extracting and a high-pressure water-jetting and pile-extracting process. According to the scheme adopted by the invention, the high-pressure water-jetting and pile-extracting process is characterized by comprising the following steps of: covering a steel sleeve by vibrating; dispersing a soil layer between a to-be-extracted pile foundation and the sleeve by carrying out high-pressure water jetting and high-pressure air injection synchronously, thereby completing pile foundation extracting and backfilling. According to the pile extracting scheme provided by the invention, the defects of a conventional pile extracting scheme are solved once, so that the pile-extracting process can be used under most of working conditions, the earthwork backfilling problem is solved, and conditions such as settlement cracking of a foundation after later-stage extracting are avoided.

Description

technical field [0001] The invention belongs to the scheme for removing old pile foundations in civil engineering. Background technique [0002] see figure 1 At present, the extraction of piles mostly adopts the extraction method of large-scale crane 1 supplemented by special clamp 2. That is, according to the need to pull out the pile foundation 3, order the corresponding fixture 2, use the fixture 2 to clamp the pile head, and then use the large crane 1 to pull it out with a high lifting force. [0003] But there are following problems in such pile extraction process in practical application process: [0004] 1. When the bearing capacity of the surrounding foundation of the pile foundation to be removed is lower than the lifting force required by the crane, the pile removal process will not be available; [0005] 2. After the pile foundation is pulled out, it cannot be backfilled, causing the risk of settlement and cracking of the surrounding foundation. [0006] It ca...

AI Technical Summary

Problems solved by technology

[0004] 1. When the bearing capacity of the surrounding foundation of the pile foundation to be removed is lower than the lifting force required by the crane, the pile removal process will not be available;

[0005] 2. After the pile foundation is pulled out, it cannot be backfilled, causing the risk of settlement and cracking of the surrounding foundation

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