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Construction method for preventing static-pressure precast tubular piles from floating

A technology of prefabricated pipe piles and construction methods, applied in sheet pile walls, foundation structure engineering, construction and other directions, can solve the problems such as the decrease of the ultimate bearing capacity of the piles, the damage of the pile body structure, and the pulling cracks of the pile body, so as to achieve low construction noise, Improved bearing capacity and good pile quality

Inactive Publication Date: 2013-09-11
ZHEJIANG UNIV CITY COLLEGE +2
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Under the joint action of these two factors, the ultimate bearing capacity of the pile decreases, and at the same time, there is frictional resistance in the soil, so that the poor-quality pile joints and pile bodies may be pulled apart, and the pile body structure may be destroyed.

Method used

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  • Construction method for preventing static-pressure precast tubular piles from floating

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Embodiment 1

[0027] The construction technological process of the present invention is as figure 1 shown. It mainly includes the steps of positioning and setting out, placing the pile driver in place, inserting piles, pressing piles, connecting piles, sending piles or cutting piles, and forming piles.

[0028] The specific construction method and operation points are as follows:

[0029] (1) Measurement, positioning and setting out

[0030]1) Carefully review the design drawings and the design institute's pile delivery points, and if necessary, arrange the coordinate control points and level control points on the construction site according to the standard setting requirements. The number of standard control points can meet the construction needs and the mutual review between measurement points , and then accurately calculate the dimensional relationship or the coordinates of each pile position according to the design drawings, and accurately measure and place the pile positions.

[003...

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Abstract

The invention discloses a construction method for preventing static-pressure precast tubular piles from floating. The method mainly comprises the steps of conducting positioning and paying off, taking a pile machine in place, pitching the piles, pressing the piles, splicing the piles, feeding or cutting the piles and forming the piles. The method can prevent the piles from rebounding and moving up to the maximum extent after the piles are pressed, bearing capacity of the piles is improved, the practical quantity of the piles is reduced, and therefore a pile arrangement coefficient is reduced. According to actual measurement of a project, the bearing capacity of a single pile can be improved by 15 percent to 20 percent, construction cost of the tubular piles is saved by 15 percent, and economic benefits are quite obvious.

Description

technical field [0001] The invention belongs to the field of construction engineering, in particular to a construction method for preventing static pressure prefabricated pipe piles from floating. Background technique [0002] With the increasing environmental requirements of urban construction, the cost of mud transportation is also increasing. Although bored piles are still used as the main pile type, it is undeniable that prefabricated pipe piles have a greater impact under the technical measures to reduce the effect of soil extrusion. application space. The static pressure pile sinking of prefabricated tubular piles has great advantages in environmental protection. Under the same geological conditions, it has better indicators than bored piles in terms of pile side friction resistance and pile end resistance. , preferred by the owner. However, reports of engineering accidents caused by the floating of pipe piles emerge in an endless stream, and the floating of pipe pil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D7/20E02D31/12
Inventor 陈春来
Owner ZHEJIANG UNIV CITY COLLEGE
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