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Cast-in-place concrete hollow five-star shaped pile with large diameter and construction method and special device thereof

A construction method and technology of special equipment, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve problems such as the effect of pile side friction resistance that has not been considered

Inactive Publication Date: 2012-04-04
HENAN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this pile type has not considered the effect of special-shaped cross-section on improving pile side friction.

Method used

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  • Cast-in-place concrete hollow five-star shaped pile with large diameter and construction method and special device thereof
  • Cast-in-place concrete hollow five-star shaped pile with large diameter and construction method and special device thereof
  • Cast-in-place concrete hollow five-star shaped pile with large diameter and construction method and special device thereof

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] refer to figure 1 , figure 2 The invention discloses a cast-in-situ concrete large-diameter hollow five-star pile. The side surface of the pile body is composed of an angular plane formed by intersecting the pile body and an arc-shaped curved surface that is smoothly connected with the plane and is sunken into the pile body. The cross-section of the pile body is hollow five-star shape.

[0032] After the cast-in-place concrete large-diameter hollow five-star pile is piled, the middle is a cylindrical pile core soil, and the outside is a five-star concrete structure.

[0033] Further preferably, the inner diameter of the pile is 0.37-0.88m, the diameter of the outer circle is 1.0-2.0m, and the pile length can reach more than 25m.

[0034] Further preferably, the top of the pile body is poured with concrete to form a circular ...

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Abstract

The invention discloses a cast-in-place concrete hollow five-star shaped pile with large diameter and a construction method and a special device thereof. The side surface of the pile consists of an angular plane of the pile which is formed in intersection and arc-shaped curved surface depressed into the pile and connected with the plane smoothly. The cross section of the pile is hollow five-star shaped. A five-star shaped hollow steel sleeve is infiltrated to the foundation to designed depth by vibrating an immersed tube and then concrete is casted in a cavity of the inner and outer steel sleeves and the tube is drawn by vibration to form the cast-in-place concrete hollow five-star shaped pile with large diameter. The invention further relates to the special device of the construction method of the concrete pile. The cast-in-place concrete hollow five-star shaped pile with large diameter is a thin-wall abnormal pile which is rigid, has high strength, large processing depth, simple process, and strong maneuverability and is convenient to control the quality, monitor, and has high bearing capacity and low cost. The special device has a simple structure and is convenient and flexible to operate.

Description

technical field [0001] The invention relates to a construction method and special equipment for a new cast-in-place concrete pile, in particular to a construction method and special equipment for a cast-in-place concrete large-diameter hollow five-star pile. Background technique [0002] The vertical bearing capacity of a pile is composed of two parts: the pile side friction resistance and the pile tip resistance. The play of the pile side friction resistance is particularly important in deep soft soil foundations. Rigid pile composite foundation treatment technology has been widely used in soft soil foundation treatment engineering fields such as highways, high-speed railways, and high-rise buildings. Among them, how to improve the utilization rate of unit material strength and how to obtain a larger pile foundation bearing capacity with the same amount of building materials is one of the important topics that researchers have been paying attention to for a long time. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D5/66E02D5/72E02D7/18
Inventor 任连伟郭佳奇王欣何军杨大方刘俊超刘希亮李建委闫松
Owner HENAN POLYTECHNIC UNIV
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