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Pile sinking method of Synchronization grouting static pressure precast pile

A technology of simultaneous grouting and prefabrication of piles, applied in sheet pile wall, construction, infrastructure engineering, etc., can solve problems such as the difficulty of driving static piles, and achieve the effect of shortening construction period, improving efficiency, and reducing pile tonnage.

Inactive Publication Date: 2008-05-21
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a synchronous grouting static pressure prefabricated pile sinking method, which overcomes the shortcomings of the difficulty of static pressure pile sinking. The application of this method can not only reduce the dynamic pile pressure resistance, improve the pile pressure efficiency, but also improve the post-pile Side resistance and pile end resistance, so as to ensure the pile penetration depth and pile body quality, reduce the tonnage of the pile driver, improve construction efficiency, thereby expanding the application range of static pressure piles and reducing project costs

Method used

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  • Pile sinking method of Synchronization grouting static pressure precast pile
  • Pile sinking method of Synchronization grouting static pressure precast pile
  • Pile sinking method of Synchronization grouting static pressure precast pile

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: Before the pile is pressed, the grouting fluid is configured first,

[0029] Side pile grouting fluid: 1 part of water, 1 part of cement, 0.1-0.2 part of bentonite, 0.05 part of retarder, and stir evenly;

[0030] Pile end grouting fluid: 1 part of water, 1 part of cement; then start to press the pile, make the static pressure pile machine in place and level; use the static pressure machine to place the grouting hole 2, the pile tip 1, and the grouting conduit 5. Prefabricated concrete square piles or pipe piles 4 are pressed into the ground. When the tip of the pile is pressed into the soil for 1-2m, the grouting pump is started to inject the side pile grout, and the pile is pressed while grouting. The amount of grout injected during the process must be able to wrap the pile body to form a mud film of a certain thickness; after the prefabricated pile is pressed into the design depth, continue to press the grout, and inject the grout at the pile end until ...

Embodiment 2

[0032] Embodiment 2: Before the pile is pressed, the grouting fluid is configured first,

[0033] Side pile grouting fluid: 1 part of water, 2 parts of cement, 0.1-0.2 parts of bentonite, 0.03 parts of retarder, and stir evenly;

[0034] Pile tip grouting fluid: 1 part of water, 1 part of cement;

[0035] Then start to press the pile, make the static pressure pile machine in place, leveling; adopt the static pressure machine to press the prefabricated concrete pile or pipe pile 4 with the grouting hole 2 pile point 1 and the grouting conduit 5 into the ground, when the pile point After being pressed into the soil for 1-2m, start the grouting pump to start grouting, inject the grouting slurry for the side piles, and press the piles while grouting. A certain thickness of mud film; after the prefabricated pile is pressed into the design depth, the grouting is continued, and the grouting liquid at the pile end is injected until the grouting amount of the prefabricated pile reache...

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Abstract

The method of synchronous grouting and static pressure prefabricated pile sinking belongs to the technical field of reinforced concrete prefabricated pile pile sinking in the field of construction. During the process, the side pile grouting fluid is injected at the same time. After the pile tip reaches the design depth, the pile tip grouting fluid is continuously injected into the pile tip to form a grouting expansion head at the pile tip; Reduce the construction cost and improve the construction quality; overcome the shortcomings of the difficulty of static pressure pile sinking, the application of this method can not only reduce the dynamic pile pressure resistance, improve the pile pressure efficiency, but also improve the pile side resistance and pile end resistance in the later stage, so as to ensure The tonnage of the pile press machine is reduced and the construction efficiency is improved, thereby expanding the application range of the static pressure pile and reducing the project cost.

Description

technical field [0001] The invention belongs to the field of construction and relates to a pile sinking construction method for reinforced concrete prefabricated piles. technical background [0002] Reinforced concrete prefabricated piles and their static pressure pile method have been widely used in multi-storey buildings and high-rise buildings in soft soil areas in my country because of their noise-free, vibration-free, fast construction speed, and reliable pile quality. During the popularization and application in the northern region, it was found that the static pressure pile is difficult to pass through the medium-thickness sand layer and hard soil layer in the river-lake interactive sedimentary facies. When the pile pressure is small, the pile cannot be pressed down. broken; using the currently commonly used auxiliary pile sinking methods such as water flushing and soil digging reduces the compaction effect of static pressure piles; when the pile tip enters the sand bea...

Claims

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Application Information

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IPC IPC(8): E02D7/26E02D7/20E02D7/24E02D5/32E02D5/62
Inventor 李建军梁仁旺
Owner ZHONGBEI UNIV
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