Simple pile head breakdown aided construction method

A construction method and pile head technology, which is applied to sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as low efficiency, high labor intensity, and difficult chisel removal, and achieve huge economic benefits, less supporting equipment, and reduced The effect of construction costs

Inactive Publication Date: 2016-07-13
EAST CHINA JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a simple pile head removal auxiliary construction method to improve the existing construction technology in view of the series of problems in the process of underwater concrete pile head removal, such as low efficiency, high labor intensity, and high difficulty in chiseling.

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Embodiment Construction

[0035] The specific embodiment of the present invention is as figure 1 The flow chart is shown.

[0036] The specific steps of a kind of simple pile head breaking auxiliary construction method of the present embodiment are as follows:

[0037] (1) Control the initial setting time of concrete in the later stage

[0038]When the underwater concrete is poured normally, the initial setting time has little to do with the length of the pile or the pouring time, because the concrete at the lower part of the conduit mouth can be solidified in advance, which has a positive effect on the overall pouring quality, especially the stability of the reinforcement cage. It may be necessary to carry out treatment such as tube suspension, and the initial setting time should be 2 to 3 hours.

[0039] (2) Determine the initial setting time of the initial poured concrete

[0040] According to the principle of the conduit method, the underwater concrete poured in the initial stage is just the op...

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Abstract

The invention discloses a simple pile head breakdown aided construction method which comprises the following steps: controlling the initial setting time of later concrete in a graded manner; treating pile head reinforcements, and reducing the peeling difficulty between the reinforcements and concrete; and inserting a plurality of PVC conical hollow pipes into the existing concrete pile head. According to the method disclosed by the invention, under the condition that the existing construction conditions and requirements are not changed, partial reinforcements of the pile head only need to be subjected to proper isolation treatment after reinforcement cage binding completion, a certain number of special PVC hollow pipes are inserted after underwater concrete grouting completion, and the aim can be achieved. The method disclosed by the invention is convenient to operate and less in matching equipment, the construction cost is not increased, and constructors can easily, rapidly and skillfully operate. According to the method disclosed by the invention, the problem that an underwater concrete pile head is difficult to break down for a long time is solved, the pile head breakdown efficiency is greatly improved, and the construction cost is reduced. With increase of construction quantity of site construction pile foundations and increase of manual cost, solution to the pile head breakdown problem creates huge economic benefits for state infrastructures.

Description

technical field [0001] The invention relates to a simple pile head breaking auxiliary construction method, which belongs to the technical field of civil construction. Background technique [0002] With the rapid development of infrastructure construction in the transportation industry and the continuous acceleration of urbanization, the construction of pile foundations for bridge foundations, the bottom sealing of caps, the construction of pile foundations in foundations such as high-rise and super high-rise buildings, and the construction of underground diaphragm walls all require pouring. underwater concrete. After the underwater concrete is poured, the pile heads need to be chiseled off. However, at present, most of the pile head chiseling construction adopts conventional mechanical crushing methods, such as pneumatic picks, hydraulic picks and breaking hammers, etc., which break the structure of objects through the impact of external forces. Due to the high strength of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D9/00
CPCE02D9/005E02D2300/002
Inventor 李明华
Owner EAST CHINA JIAOTONG UNIVERSITY
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