Detachable autorotation type drilling pipe pile and construction method thereof

Abstract

The invention discloses a detachable autorotation type drilling pipe pile. The detachable autorotation type drilling pipe pile comprises a pipe pile body, a movable joint, a drill rod, and a drill bit, wherein the pipe pile is of a hollow structure; the movable joint is slidably arranged on a traction guide pipe in a sliding mode, the lower end of the movable joint is fixedly connected with a traction wire, and the movable joint is arranged in the pipe pile body and can move up and down in the pipe pile body; the drill rod is fixedly connected with the lower end of the movable joint and located in the pipe pile; the drill bit is arranged at the bottom of the drill rod and is connected with a driving mechanism, and the drill bit is driven to rotate through the driving mechanism; the drill bit comprises a mechanical drill bit body and a plurality of high-pressure water jet nozzles; the multiple high-pressure water jet nozzles are arranged on the mechanical drill bit body; and the multiple high-pressure water jet nozzles are arranged in different inclination directions. According to the detachable autorotation type drilling pipe pile, the problem that it is difficult for the pipe pileto penetrate into a rock stratum during the pile sinking construction process is solved; damage of a pile body caused in the pile sinking process is reduced; the soil plug effect of the pipe pile inthe pile sinking process is reduced; and the construction is convenient and simple and convenient to implement.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a detachable self-rotating bored pipe pile and a construction method. Background technique [0002] After years of rapid development, prestressed concrete pipe piles have been widely promoted and widely used in construction, roads, bridges, ports and other engineering fields. For a long period of time in the future, with the continuous improvement of my country's infrastructure construction, the pipe pile industry will continue to develop. At present, there are three main pile sinking technologies for concrete pipe piles: static pressure method, hammering method, and vibration method. [0003] Static pressure construction is a pile-forming process that uses the self-weight of the pile-pressing mechanism of the static pile-pressing machine and the counterweight on the pile frame as the reaction force to press the prefabricated pile into the soil. The static pressure method h...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a detachable self-rotating bored pipe pile, so as to overcome the shortcomings of traditional construction methods such as difficulty in entering the rock, causing damage to the pile body, and reducing the bearing capacity of the pile foundation when the concrete pipe pile is sunk.

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