Construction method for pile pulling with high pressure water-air jet lubrication around pile casing
A technology of spray lubrication and construction method, which is applied in the direction of sheet pile wall, foundation structure engineering, construction, etc., can solve the problems of high cost, time-consuming and laborious construction, high friction between the pile body and the surrounding soil, etc., and achieve the reduction of the pile body Stress, reduce the effect of pulling out the pile
Inactive Publication Date: 2021-01-26
三桥建工(福建)有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problems that the pile body of the traditional pile is easily broken, the friction between the pile body and the surrounding soil is too large during the pile pulling process, the construction is time-consuming and laborious, and the cost is high. Lubricated pile pulling construction method
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[0042] In order to further understand the content of the present invention, the present invention is described in detail with reference to the embodiments. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0043] Example: 5 piles to be pulled out are 10m long and 0.6m in diameter.
[0044] combined with Figures 1~6The invention relates to a construction method for pile pulling with high pressure water and gas jet lubrication around the pile casing, which adopts a pile pulling device, which is composed of a casing structure, a high pressure water and gas jet system, a mud circulation system, a hydraulic jack clamping structure, etc. . The casing structure is composed of an outer casing 201, an inner casing 202, a casing rib 205 and a rotary drill bit 203. The outer casing 201 and the inner casing 202 are connected by the casing rib 205 to form an integral structure; high-pressure water a...
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The invention relates to a construction method for pulling piles with high-pressure water-air jet lubrication around pile casings. Steps such as lubricating the sinking of the casing, clamping the pile with a hydraulic jack, and pulling out the pile body. The rotary drill at the bottom of the casing is electrically driven by high-pressure water jets around the pile, and the pressurized gas filling equipment is activated while the drill is drilling. The circulation system discharges sludge and adjusts the mud lubrication performance. After the high-pressure water-air jet lubricating sleeve around the pile sinks in place, start the oil supply equipment, the clamping arm clamps the pile to be pulled out through the jacking force of the hydraulic jack, and use the lifting device to pull out the water-air jet lubricating sleeve around the pile synchronously and slowly. Pile to be pulled. The equipment used in the pile pulling method of the present invention is convenient to assemble and disassemble, has high construction efficiency, can be recycled and used, and has strong adaptability.
Description
technical field [0001] The invention relates to the technical field of pulling piles in geotechnical engineering, and has excellent effects on prefabricated square piles, pipe piles, reinforced concrete cast-in-place piles and the like in soil layers such as artificial fill, cohesive soil, silt, sand and the like, and in particular relates to a pile Construction method for pile pulling with high pressure water and gas jet lubrication around casing. Background technique [0002] In the old city renovation projects such as municipal construction, underground rail transit, and basement construction in the old city, the original underground foundation piles form a great obstacle to the pile foundation of the new project or the development and construction of the underground space, and the old piles need to be pulled out. The traditional direct pile pulling method mainly relies on the power of the pulling machine to overcome the resistance around the pile and the gravity of the p...
Claims
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IPC IPC(8): E02D9/02
Inventor 朱凯陈小林李栋樑
Owner 三桥建工(福建)有限公司