Construction method of concrete pile by soil extraction and pressure filling

Abstract

The invention aims at providing a construction method of a concrete pile by soil extraction and pressure filling. The construction method is characterized by comprising the following steps: 1, pressing a soil extraction device with a material conveying pipe into a soil body by one or several modes of vibration, hammering and static pressing, wherein the soil body rushes into an inner cavity of the soil extraction device in the sinking process; 2, pumping a cement mixture at the bottom of the soil extraction device through the material conveying pipe and lifting up the soil extraction device at the same time, keeping doing the operations until the soil extraction device reaches the surface of a foundation, to form a filling pile body; and 3, discharging the soil body in the soil extraction device, and carrying out subsequent construction on the filling pile body. According to the construction method, the construction procedures of hole forming by soil extraction and pile body filling can be completed at a time; the soil extraction and hole forming speeds are high, and the working efficiency is high; and meanwhile, the construction method is applicable to a pile foundation and a compound foundation, and is large in application range.

Description

technical field [0001] The invention relates to the construction of building foundations, in particular to a construction method of earth-extracting pressure grouting concrete piles. Background technique [0002] In the foundation treatment of buildings, pile holes must first be formed in the foundation soil during pile foundation construction. At present, there are many hole-forming techniques and means, which can generally be divided into soil-taking hole-forming method and soil-extruding hole-forming method. The method of taking soil to form a hole is to take out the soil at the original pile position in the foundation through various equipment and techniques to form a pile hole. The bearing capacity of hole-forming piles is lacking. Commonly used earth-borrowing methods include auger drilling, rotary drilling, manual digging, etc., as well as earth-borrowers, but the current soil-borrowers are single-purpose and have no other purpose except for soil-borrowing. , can no...

AI Technical Summary

Problems solved by technology

[0002] In the foundation treatment of buildings, pile holes must first be formed in the foundation soil during pile foundation construction. At present, there are many hole-forming techniques and means, which can generally be divided into soil-taking hole-forming method and soil-extruding hole-forming method. The method of taking soil to form a hole is to take out the soil at the original pile position in the foundation through various equipment and techniques to form a pile hole. The bearing capacity of hole-forming piles is lacking

Commonly used earth-borrowing methods include auger-drilling pilot holes, rotary-drilling-drilling holes, manual digging, etc., as well as the use of soil-borrowers to get soil. , can not work continuously, and for the deeper soil often need to take soil and dump soil for many times, the effect is not good, and the depth is not enough

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