CFG pile precast pile cap reserved hole grouting construction method

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...

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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

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