Drilling filling pile construction method

Abstract

The invention discloses a drilling filling pile construction method, and relates to the technical field of civil engineering. The drilling filling pile construction method comprises the following steps including the first step of construction preparing, the second step of pile position lofting, the third step of protection barrel burying, the fourth step of slurry preparing and storing, the fifthstep of drilling platform construction, the sixth step of drill bit type selecting and drill tool arrangement, the seventh step of drilling, the eighth step of hole forming checking, the ninth step ofprimary hole cleaning, the tenth step of reinforcement cage hoisting placing and positioning construction, the eleventh step of secondary hole cleaning and the twelfth step of underwater concrete pouring. According to the drilling filling pile construction method, a large-diameter ultra-long drilling filling pile and a construction method are adopted, the engineering problems that under complex work conditions, drilling filling pile drilling one-time hole forming difficulty is large, hole inclining is likely to happen, perpendicularity is hard to guarantee, a coverage layer is thick, slurry leakage is likely to happen, the hole collapsing risk is large, and efficiency is low can be effectively solved, and good technical, economic and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a large-diameter super-long bored pile and a construction method, which are suitable for the construction of large-diameter super-long bored piles. Background technique [0002] During the construction of bored piles, construction accidents such as hole collapse, pipe blockage, steel cage floating, and pipe breakage often occur, which are mainly caused by the continuous and complex process and concealed construction during underwater concrete pouring. of. If the pile is located in rapid waters or on an inclined rock surface, the sinking and stability of the steel pipe pile on the drilling platform are difficult problems, and the precise positioning of the steel casing is even more difficult. Improper operation will inevitably cause great engineering safety hazards and economic loss. [0003] When large-diameter and super-long bored piles are drilled under ...

AI Technical Summary

Problems solved by technology

When the pile is constructed at a water depth of more than 20m and at a high water level, the bedrock is partially composed of cataclysmic rock, its weathered layer, and structural breccia. It is very difficult to construct under such complex conditions. In order to ensure the quality of the hole, it is difficult to use traditional drilling technology and drilling equipment.

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