CFG pile implanting construction method suitable for composite soft and hard geology

Abstract

The invention discloses a CFG pile implanting construction method suitable for the composite soft and hard geology. Firstly, a rotary excavating machine is used for drilling a hard stratum, then a long spiral machine is used for conducting repeated drilling till the designed elevation is achieved, and finally concrete pouring is conducted; and the interval time of drilling of the rotary excavatingmachine and drilling of the long spiral machine is controlled to be within 1 hour. By means of the CFG pile implanting construction method, the mechanical degree is high, the labor intensity is low,mature supporting measures are achieved on the construction quality and safety, the construction noise is low, construction materials are few, equipment for use is simple, the equipment transfer costis low, the construction speed is high, and the social benefits are obvious.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a CFG pile implantation construction method suitable for composite soft and hard geology. technical background [0002] CFG piles are suitable for strip foundations, independent foundations, raft foundations and box foundations. The principle is to form a composite foundation of CFG piles together with the soil between the piles and the cushion layer, which improves the rigidity of the piles and can give full play to the side resistance of the whole pile. At the same time, it can give full play to its end resistance and achieve good economic and social benefits. It is widely used in our area. However, CFG piles generally use long spiral construction methods, which are difficult to adapt to and solve various piles under complex geological conditions. Turning problems, the cost of using a single mechanical long casing alone is too high, the construction period cannot ...

AI Technical Summary

Problems solved by technology

[0002] CFG piles are suitable for strip foundations, independent foundations, raft foundations and box foundations. The principle is to form a composite foundation of CFG piles together with the soil between the piles and the cushion layer, which improves the rigidity of the piles and can give full play to the side resistance of the whole pile. At the same time, it can give full play to its end resistance and achieve good economic and social benefits. It is widely used in our area. However, CFG piles generally use long spiral construction methods, which are difficult to adapt to and solve various piles under complex geological conditions. Turning problem, using a single mechanical long casing alone is too costly to deal with, the construction period cannot be guaranteed, and the long auger drilling machine cannot form holes. It is necessary to design a new turning method to solve the above problems

Images