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

A construction method and concrete technology, applied in drilling equipment and methods, drilling equipment, earth drilling and mining, etc., can solve the problems of low construction efficiency and poor soil-breaking ability, and achieve both soil-breaking ability, increased soil-breaking area, easy soil-breaking and The effect of immersed tube

Pending Publication Date: 2021-11-09
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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  • Diameter expanding equipment of cast-in-place concrete pile and construction method of cast-in-place concrete pile
  • Diameter expanding equipment of cast-in-place concrete pile and construction method of cast-in-place concrete pile

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Embodiment 2

[0034] The invention provides a construction method of concrete pouring pile, comprising the following steps:

[0035] a. using the diameter-expanding equipment described in the above-mentioned embodiment 1 to form a hole at the pile position, and sink to the first diameter-expanding position;

[0036] b. pouring flow-plastic concrete at the first diameter-expanding position, and applying a vertical downward force to the flow-plastic-shape concrete at the first diameter-expanding position by operating the diameter-expanding device, Radially extruding and expanding the flow-plastic concrete to form a first diameter-expanding structure;

[0037] c. Using the expansion device to apply a downward force to the flow-plastic concrete at the first expansion position, and to penetrate the flow-plastic concrete while radially expanding the flow-plastic concrete flow plastic concrete body;

[0038] d. sinking the expanding device downward to the second expanding position;

[0039] e. Po...

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Abstract

The invention provides diameter expanding equipment for a cast-in-place concrete pile. The diameter expanding equipment comprises an outer sleeve component, an inner sleeve component adapted to be mutually nested with outer sleeve component, and a soil breaking structure, 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-expanding device for concrete pouring piles and a construction method for concrete pouring piles. Background technique [0002] In foundation construction, for the bearing capacity of cast-in-situ piles, a radially enlarged structure is often formed at the bottom of the pile through construction; however, in order to further increase the bearing capacity of the pile body, Chinese patent documents CN 107794918A, CN 102444120A and CN111395312A disclose respectively A construction method of cast-in-situ piles with radially enlarged structures formed at the pile bottom and pile body and the pile body obtained by this method are proposed. In the construction method introduced in this patent document, the sequence of forming the radially enlarged structure is formed from the bottom of the pile by tamping from bottom to top. The above-mentioned prior art discloses diameter-expanding equipment respectively, that is, the inn...

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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