Immersed tube grout pile construction process and pile tip bearing capacity reinforcement equipment

A technology of pile tip bearing capacity and sinking cast-in-situ piles, which is applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of weakening pile tip bearing capacity, achieve improved pile tip bearing capacity, simple structure, and improve construction Effects of efficiency and pile quality

Inactive Publication Date: 2004-11-10
北京中技天昊工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a construction technique of immersed tube grouting piles and a pile-end bearing capacity enhancer, which solves the technical problem of weakening the pile-end bearing capacity due to piercing after the original pile boots compact the pile-end soil

Method used

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  • Immersed tube grout pile construction process and pile tip bearing capacity reinforcement equipment
  • Immersed tube grout pile construction process and pile tip bearing capacity reinforcement equipment
  • Immersed tube grout pile construction process and pile tip bearing capacity reinforcement equipment

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Embodiment

[0049] Embodiment: The construction technology of sinking pipe grouting pile is as follows figure 1 Shown:

[0050] Step a: installing a pile end bearing capacity enhancer at the anchor point of the pile foundation;

[0051] Step b: Put the pile driver in place, align the lower end of the steel casing with the pile end bearing capacity enhancer, and ensure the verticality;

[0052] Step c: Immerse the tube to the design position;

[0053] Step d: pull the lifting rope connected to the pile end bearing capacity enhancer from the top of the steel casing, drive the central axis umbrella pole 9 connected with the handle 8, first lift the top cap 3, release the constraint on the diagonal brace 1, and continue to lift , the fixed block 6 drives the movable slider 4, so that the support connecting rod 5 pushes the diagonal brace 1 around to make it parallel to the pile wall, the lower end of the diagonal brace also shrinks into the pipe pile, and continues to lift, and the movable ...

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Abstract

The invention is a sinking tube pouring picket constructing technique and picket-end bearing capacity enhancer, placing the enhancer at positioning point of the picket base; the picket machine takes its place to align the end of the steel sleeve with the enhancer; starting sinking the tube to the calculated position; pulling the rope linked with the enhancer 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 steel sleeve, and the active stop block drives the picket boot to take out the enhancer. Placing bar reinforcement cage in the steel sleeve; vibrantly pulling the tube while pouring the concrete, and forming a picket. It can enhance the penetrating property of the steel sleeve, extrude picket end soil body closely, heighten picket-end bearing capacity, reduce deposition quantity, heighten picket forming quality and constructing efficiency, etc.

Description

technical field [0001] The invention relates to a construction method of building foundation piles and a device for increasing the bearing capacity of pile ends, in particular to a construction technique for sinking tube grouting piles and a device for improving the bearing capacity of pile ends of sinking tube grouting piles. technical background [0002] Immersed tube cast-in-situ pile is to sink the steel casing with conical steel pile shoes or prefabricated reinforced concrete pile shoes into the soil, then put the steel cage into the pipe and fix it, and then vibrate the steel casing while pouring concrete. Pull it out of the hole to form a reinforced concrete pouring pile. At present, the construction methods of immersed pipe grouting piles include vibration method, vibro-shock method and hammering method. Their construction process is as follows: place prefabricated pile tips (boots) or tapered steel pile tips (boots), place the pile driver, align the steel casing wi...

Claims

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Application Information

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IPC IPC(8): E02D5/38E02D5/72
Inventor 黄强王建军颜小荣魏巍
Owner 北京中技天昊工程技术有限公司
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