Pipe pile construction method

Abstract

The invention is a tubular pile constructing method and pile-end bearing capacity enhancer, placing the enhancer at positioning point of the picket base; the pile machine takes its place to align the end of the pile end with the enhancer; starting sinking the pile, and when the pile passes through bad earth layer or enters in pile-end force-bearing layer, temporarily stopping stinking pile; pulling the rope to drive axial umbrella rod, so that the top cap relieves the inclined support from restriction, the fixed stop block drives the annular slide block to make the supporting link rod push and spread the inclined support around so as to shrink into the pile, and the active stop block drives the pile boot to take out the enhancer; sinking the pile to the designed depth and the pile end squeezes compact earth to gush into the pile to form an earth stopper; pouring concrete in the pile to form an earth stopper cap, thus forming a pile. It can enhance the penetrating property of the pile, extrude pile end earth closely, heighten pile-end bearing capacity, reduce deposition quantity, heighten pile forming quality and constructing efficiency, etc

Description

technical field [0001] The invention relates to a construction method for building foundation piles, in particular to a construction technique for pipe piles. Background technique [0002] At present, the construction methods of pipe piles are divided into static pressure pile sinking method and hammer pile sinking method. The static pressure pile sinking method uses the static pressure reaction force to press the pipe pile into the rock and soil layer, while the hammer pile sinking method relies on a strong impact force to impact the top of the pipe pile to penetrate the pipe pile into the soil layer. Their construction process is: measurement and positioning, pile driver installation in place, pile lifting in place and centering, two-phase orthogonal direction straightening, static pressure or hammering method to sink the first section of piles, lifting the second section of piles Align the position, connect the piles by welding or sulfur cement, and sink the second secti...

AI Technical Summary

Problems solved by technology

[0014] The present invention provides a construction method for pipe piles, which solves the technical problem of weakening the bearing capacity of the pile ends due to penetration after the original sealed pile shoes compact the soil at the pile ends and removes bad soil quality; The problem that the soil plug in the pipe pile is squeezed and slipped again under the load after the pile is completed

Images