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Pile extracting construction method

A technology of pile position and pile alignment, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problem of incomplete removal of waste piles, and achieve the effect of easy pile lifting and accurate positioning

Active Publication Date: 2015-07-15
GEZHOUBA GROUP FOUND ENG
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  • Abstract
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Problems solved by technology

[0003] In order to overcome the incomplete removal of waste piles by using the traditional pile pulling method, the technical problem to be solved by the present invention is to provide a new type of pile pulling method, the waste piles are positioned more accurately, and the soil layer around the piles is cleaned by using high-pressure jetting of air and water Easy to pick up piles to ensure more thorough pile extraction

Method used

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  • Pile extracting construction method

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Embodiment

[0018] Example: see figure 1 A kind of construction method of extracting piles, it comprises the following steps:

[0019] 1) First use the seismic geophysical method to preliminarily determine the general position of the waste pile, then use a small auger to detect and determine the specific pile position, and then use an excavator to excavate a 1-meter-deep trench, and adopt conventional manual digging in the trench Pile construction technology Manual excavation with a diameter of 1000mm and a depth of 2 meters, while digging and supporting, digging to 2 meters below the surface and using steel brazing to find out the exact position of the square pile, and determine the pile position that needs to be pulled out.

[0020] 2) Considering the deep burial depth of the pile top, it is necessary to adopt moso bamboo tube support measures, and additionally equip water pumps for precipitation treatment. Considering that the distance between the piles is small, the jump-pull met...

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Abstract

The invention discloses a pile extracting construction method, wherein an approximate location of a discarded pile is initially determined by using a seismic geophysical survey, and the specific pile location is detected and determined by using a small screw drill; by using the method, the discarded pile is located more accurately; during a steel pipe sinking procedure, a soil layer beside the pile is washed in a casing pipe by using high pressure jetted gas and water, so that the frictional force on the outer side of the pile is reduced to be minimum, and the pile is convenient to pull out; compared with the traditional method, the pile extracting method is fast in progress; the new foundation bearing capacity in a later period is also ensured.

Description

technical field [0001] The invention relates to a construction method for pulling piles. Background technique [0002] In the construction of pile pulling, generally the general position of the waste pile is initially determined by the seismic geophysical method, and then the specific pile position is determined by small auger detection. affect subsequent construction. The traditional methods include: (1) Use high-pressure water guns to loosen the soil around the waste to eliminate the friction between the pile and the soil. When brushing with a high-pressure water gun, it is impossible to achieve the effect of vertical flushing. For example, when the pile depth is about 10m-15m, after being scoured by a high-pressure water gun, the affected surface of the foundation soil around the pile is generally only about 4-5m. (2) Use machinery to dig grooves around the waste piles to eliminate friction. However, due to the insufficient length of the mechanical wall of the excavat...

Claims

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Application Information

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IPC IPC(8): E02D9/00
CPCE02D9/02
Inventor 李林娟陶志斌
Owner GEZHOUBA GROUP FOUND ENG
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