Cast-in-place concrete pile expanding equipment and construction method of cast-in-place concrete pile

一种施工方法、混凝土的技术，应用在钻孔设备和方法、土方钻采、钻井设备等方向，能够解决施工效率低、破土能力差等问题，达到兼顾破土能力、增加破土面积、容易破土和沉管的效果

Pending Publication Date: 2022-05-17
JIANGXI JIYE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned prior art discloses diameter-expanding equipment respectively, that is, the inner and outer casings that fit together, the working end of the bottom of the outer casing is completely through, and the realization of the soil-breaking effect depends entirely on the outer peripheral structure of the outer casing and the inner and outer casings. The ramming surface of the working end of the casing; when the immersed tube is fitted, it is equivalent to the bottom plane of a column on the rammed earth, and the soil breaking ability is poor, which will lead to low construction efficiency

Method used

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  • Cast-in-place concrete pile expanding equipment and construction method of cast-in-place concrete pile
  • Cast-in-place concrete pile expanding equipment and construction method of cast-in-place concrete pile

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Embodiment 2

[0036] The invention provides a construction method of a concrete cast-in-place pile, comprising the following steps:

[0037] a. Use the expanding equipment described in the above embodiment 1 to form a hole at the pile position, and sink it to the first expanding position;

[0038]b. Pour fluid plastic concrete at the first diameter expansion position, and apply a vertical downward force to the fluid plastic concrete at the first diameter expansion position by operating the diameter expansion device, radially extruding and expanding the fluid-plastic concrete to form a first diameter-expanding structure;

[0039] c. Using the diameter-expanding device to apply a downward force to the fluid-plastic concrete at the first diameter-expanding position, and while radially extruding and expanding the fluid-plastic concrete, penetrate the fluid-plastic concrete. Flow-plastic concrete body;

[0040] d. sink the expanding device down to the second expanding position;

[0041] e. Po...

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PUM

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Abstract

The invention provides diameter expanding equipment for a cast-in-place concrete pile, which comprises an outer sleeve component, an inner sleeve component, an outer sleeve component, an inner sleeve component and an outer sleeve component, the soil breaking structure is arranged on the lower end face of the outer sleeve component, a gap allowing concrete to pass through in the axial direction of the outer sleeve component is formed between the soil breaking structure and the outer sleeve component, and the soil breaking structure is of a structure with the wide upper portion and the narrow lower portion. The invention further provides a construction method of the cast-in-place concrete pile adopting the expanding equipment.

Description

technical field [0001] The invention relates to a diameter expansion device of a concrete cast-in-place pile and a construction method of the concrete cast-in-place pile. Background technique [0002] In the foundation construction, for the bearing capacity of the cast-in-place pile, a radially enlarged structure is often formed at the bottom of the pile; A construction method of cast-in-place piles with radially enlarged structures formed at the pile bottom and at the pile body and a pile body constructed by the method are provided. In the construction method described in this patent document, the order of forming the radially enlarged structure is to start from the bottom of the pile and form it by ramming from the bottom to the top. The above-mentioned prior art respectively discloses diameter-expanding equipment, namely, inner and outer casings that are sleeved with each other, the working end of the bottom of the outer casing is completely through-shaped, and the reali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/28E02D5/44
CPCE21B7/28E02D5/44
Inventor 刘献刚刘斌张东海熊小林付豫楹
Owner JIANGXI JIYE SCI & TECH
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