Drilling rig with following pipe pile and construction method for following pipe pile

Abstract

Disclosed are a drilling rig for drilling with a following pipe pile and a construction method for the following pipe pile. The drilling rig is provided with a chassis, a platform, a cab, a power system, a hydraulic system, a control system, upright columns, supporting rods, a vertical winch, a power head, a soil discharge box, a spiral drill stem assembly, a reamer bit, a vibration exciter, an adjusting cylinder, a manned hanging basket, a hanging basket winch, a pressurizing winch, an auxiliary winch and a pile controller, wherein the platform, the cab, the power system, the hydraulic system and the control system are located on the chassis, the upright columns and the supporting rods are mounted on the platform, and the auxiliary winch is used for hoisting heavy objects. The construction method for the following pipe pile comprises following steps: leveling the pile controller after the pile controller is aligned with a pile location and adjusting verticality of upright columns of the drilling rig; mounting a prefabricated pipe pile and a drill and leading the reamer bit to penetrate out of the lower end surface of the prefabricated pipe pile; forwards rotating the power head, leading a reamer wing of the reamer bit to be opened to begin to realize reamer drilling and leading the prefabricated pipe pile to be jacked in afterwards; backwards rotating the power head after a preset depth is achieved, withdrawing the reamer wing of the reamer bit to be closed, lifting out the reamer wing of the reamer bit from the inside of the prefabricated pipe pile and starting the vibration exciter to impact the prefabricated pipe pile; and realizing grouting piling for the sides and the bottom of the pile.

Description

technical field [0001] The invention relates to a drilling rig for pile foundation construction, in particular to a drilling rig that uses an auger drill rod and a reaming drill bit to pass through a prefabricated pipe pile and dig soil at the bottom of the prefabricated pipe pile. The internal cavity of the pipe pile discharges slag outwards, and the prefabricated pipe pile follows the reaming bit to reach the set depth of the drilling machine for pile construction; the invention also relates to a construction method of the pipe pile while drilling. Background technique [0002] At present, the pile foundation construction methods commonly used in buildings mainly include manual digging piles, hammering type sinking pipe pouring piles, hammering type press-in prefabricated piles, static pressure piles and bored piles, etc. The construction equipment is diesel hammer , vibratory hammer, hydraulic static pile driver and rotary drilling rig, etc. Manual excavation of piles is...

AI Technical Summary

Problems solved by technology

Manual excavation of piles is inefficient, and the risk level of construction workers is high; the use of diesel hammers and vibratory hammers is restricted due to serious noise pollution during construction, and they are gradually eliminated; although hydraulic static pile drivers have low noise and no Vibration and other green and environmental protection features, but its soil squeezing effect is obvious, and it cannot penetrate into the middle and slightly weathered rock surface, so that the bearing capacity of high-strength prestressed pipe piles has not been fully utilized, thus greatly limiting the application of this equipment Scope; Rotary drilling rigs are also difficult to promote in a large area because of high construction costs, strict construction conditions, and the use of mud walls during the construction process to cause serious mud pollution to the environment.

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