Construction device and construction method for pulling out piles through cooperation of rotating drilling machine and sleeve drill bit

Abstract

The invention provides a construction device for pulling out piles through cooperation of a rotating drilling machine and a sleeve drill bit. The construction device comprises the rotating drilling machine, the sleeve drill bit and a sleeve set composed of a plurality of sleeves; at least one sleeve in the sleeve set is detachably connected to the rotary drilling machine; and the sleeve drill bit is detachably connected to the sleeve at the bottommost end of the sleeve set. The invention further provides a construction method of the construction device. The construction method comprises the steps that S1, a foundation trench is excavated, and the pile position is rechecked; S2, a platform is set up, and the rotary drilling machine is put in place; S3, the sleeve drill bit drills, and a pile body and soil are separated; S4, the pile body is lifted and is sectionally pulled out; and S5, backfilling of mortar is carried out, and slurry is transported outwards. The construction device and the construction method for pulling out the piles through the cooperation of the rotating drilling machine and the sleeve drill bit have the characteristics of being low in construction cost, low in risk, simple and convenient to operate, wide in application range and the like.

Description

technical field [0001] The invention relates to the field of pile body pulling construction, in particular to a pile pulling construction device and method with a rotary drilling machine and a casing drill bit. Background technique [0002] Underground pipelines and tunnels constructed by trenchless techniques such as pipe jacking and shield tunneling will inevitably encounter pile foundation projects left by abandoned buildings during construction in urban areas. These pile foundation projects have become the biggest obstacle to the mechanized construction of tunnels, especially the internal steel structure, which is catastrophic for pipe jacking machines and shield machines, which will cause damage to the cutter head, jamming or even failure of tunneling. Therefore, it must be pulled out before excavation to ensure that the pipe jacking machine and shield machine pass through smoothly. [0003] Currently commonly used pile extraction techniques include the full rotary dri...

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Problems solved by technology

[0003] Currently commonly used pile extraction techniques include the full rotary drilling rig pile extraction method, hammering method, and pile sinking method. Among them, the hammering method and pile sinking method have the risk of incomplete removal, and the soil is likely to have steel bars or concrete left over. Shield excavation has adverse effects; full-rotary drilling rig pulls out piles, the construction equipment of this process is huge, the control system is complex, and the construction cost is high. At the same time, due to the huge equipment, the requirements for the construction site are high, and large-scale equipment cannot be satisfied under certain terrain conditions. Construction operation requirements limit the application range of fully rotary drilling rigs for pile extraction

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