Cast-in-place X-shaped large-diameter hollow concrete pile and construction method thereof

A technology of hollow concrete and large diameter, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as uneven wall thickness, difficulty in concrete pouring, and the effect of pile side friction has not been considered, so as to reduce the construction cost , facilitate quality control, improve the effect of strength utilization

Inactive Publication Date: 2010-10-20
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this pile type has not considered the effect of the pile-side special-shaped cross-section on improving the pile-side friction; and because of the thin wall thickness, uneven wall thickness and difficulty in pouring concrete are prone to occur during construction.

Method used

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  • Cast-in-place X-shaped large-diameter hollow concrete pile and construction method thereof
  • Cast-in-place X-shaped large-diameter hollow concrete pile and construction method thereof
  • Cast-in-place X-shaped large-diameter hollow concrete pile and construction method thereof

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Embodiment Construction

[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The protection scope of the present invention is not limited only to the description of this embodiment.

[0030] Such as figure 1 with figure 2 As shown, the vibratory head 2 is provided on the upper part of the vibratory pile driver 1, the vibratory head 2 is riveted with flanges 3 screws and the pile mold sinking tube 5 with scale, the sinking tube 5 has the rigidity and strength meeting the requirements of vibratory piling, and the outer wall is X The middle of the circular circular steel plate on the inner wall is a cavity, and the lower part of the immersed tube 5 is connected with the valve spud shoe 6; Immersed tube 5 bottom also can connect prefabricated pile point 7, as Figure 4 As shown, the upper part of the prefabricated pile point 7 is a connecting head 13, and the lower part is a cutting knife 12.

[0031] When implemented, ...

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Abstract

The invention relates to a cast-in-place X-shaped large-diameter hollow concrete pile. The cast-in-place X-shaped large-diameter hollow concrete pile is formed by driving an X-shaped hollow concrete pile die into a foundation till a designed depth in an immersed tube vibrating mode, then casting concrete into a cavity of a pile die immersed tube and vibrating and drawing the tube, wherein the X-shaped hollow concrete pile die comprises the pile die immersed tube with an X-shaped outer profile, the pile die immersed tube consists of inner and outer sleeves, the section of the outer sleeve is X-shaped and the section of the inner sleeve is circular. The invention also relates to a construction method for the concrete pile. The new pile form of the invention can improve the strength and utilization of unit materials and reduce the construction cost on the premise of ensuring the integral performance of the pile body; and the vertical bearing capacity and the horizontal bearing capacity are effectively improved by using the special-shaped effect of the cross section and the improvement effect of the pile core soil on the friction force of the pile side. The construction method for the pile is simple, has strong operability and is convenient for quality control and detection; and the single pile has high bearing capacity.

Description

technical field [0001] The invention belongs to the technical field of soft soil foundation treatment and pile foundation, and relates to a cast-in-situ X-shaped large-diameter hollow concrete pile and a construction method thereof. Background technique [0002] The vertical bearing capacity of pile foundation is composed of pile side friction resistance and pile tip resistance. The play of pile side friction resistance is particularly important in deep soft soil foundation. Rigid pile composite foundation treatment technology has been widely used in soft soil foundation treatment engineering fields such as highways and high-speed railways. Among them, how to improve the utilization rate of unit material strength and improve the bearing capacity of pile foundation while saving the amount of building materials is one of the important topics that researchers have been paying attention to for a long time. [0003] Before the present invention, the Chinese patent "prefabricated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D11/00E02D5/66E02D5/72
Inventor 孔纲强丁选明刘汉龙张敏霞
Owner HOHAI UNIV
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