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CFG pile precast pile cap reserved hole grouting construction method

A construction method and technology of prefabricated piles, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problem that affects the reinforcement effect of CFG piles on the foundation, cannot meet the quality requirements of CFG piles, and cannot guarantee prefabricated pile caps and CFG. Problems such as the firmness and reliability of the pile head, to achieve the effects of low engineering cost, environmental protection, and easy quality control

Inactive Publication Date: 2021-10-01
CHINA RAILWAY 19TH BUREAU GRP 3RD +1
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Problems solved by technology

However, since the surface of the CFG pile head is cut off, there will be unevenness or missing corners on the pile head surface, which will affect the quality of the CFG pile. Only ordinary cement mortar is used to make a leveling layer, which cannot meet the quality requirements of the CFG pile head. The solidity and reliability of the connection between the prefabricated pile cap and the CFG pile head cannot be guaranteed, thus affecting the reinforcement effect of the CFG pile on the foundation

Method used

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  • CFG pile precast pile cap reserved hole grouting construction method
  • CFG pile precast pile cap reserved hole grouting construction method
  • CFG pile precast pile cap reserved hole grouting construction method

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Embodiment Construction

[0031] In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0032] In the following description, many specific details are set forth in order to fully understand the present disclosure, but the present disclosure can also be implemented in other ways than described here; obviously, the embodiments in the description are only some of the embodiments of the present disclosure, and Not all examples.

[0033] CFG pile composite foundation is generally a composite foundation composed of CFG piles, soil between piles and cushion layer. In order to ensure the spread of foundation stress on the top of CFG piles, more and more CFG piles are used on top of CFG piles. Headband in the form of a pile c...

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Abstract

The invention relates to the technical field of building construction, in particular to a CFG pile precast pile cap reserved hole grouting construction method. According to the CFG pile precast pile cap reserved hole grouting construction method, a grouting hole and a groove are reserved in a precast pile cap, after the pile head of a CFG pile is chiseled away and cleaned, the precast pile cap is hoisted to the position above the CFG pile, the groove reserved in the precast pile cap is aligned with the pile head of the CFG pile and then put down, the precast pile cap is installed in place, and after the precast pile cap is installed in place. A non-shrinkage grouting material is poured from a grouting hole reserved in the precast pile cap, the grouting material is automatically leveled by means of self weight and fills a contact surface gap between the pile head of the CFG pile and the precast pile cap and the grouting hole reserved in the precast pile cap, so that the pile head of the CFG pile and the precast pile cap can be completely combined together, and the effect of transmitting foundation stress is achieved; and compared with a cast-in-place pile cap construction method, the CFG pile precast pile cap reserved hole grouting construction method can better guarantee the engineering quality and the construction period requirement, and has the characteristics of high construction speed, relatively simple process, easiness in quality control and the like.

Description

technical field [0001] The present disclosure relates to the technical field of building construction, in particular to a grouting construction method for prefabricated pile caps of CFG piles. Background technique [0002] The full name of CFG pile is cement fly ash gravel pile. It is a pile with high bonding strength formed by mixing cement, fly ash, gravel, stone chips or sand with water. It has high foundation bearing capacity, small settlement deformation, and manufacturability. Good, stable and fast, simple and easy construction, and low engineering cost, etc., are widely used in the field of engineering to treat and strengthen weak ground foundations. Because the CFG pile composite foundation technology has the characteristics of fast construction speed, relatively simple process, easy quality control, and low engineering cost, it has also been well used in water conservancy projects. According to the actual situation of the construction site and the requirements of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/22E02D15/00E02D15/04
CPCE02D5/223E02D15/00E02D15/04E02D2250/003
Inventor 赵立财黄海峰徐亮胡兴鹏狄宝才
Owner CHINA RAILWAY 19TH BUREAU GRP 3RD
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