Extended pile with a point plate formed the critical inner-hole

A technology of enlarging discs and enlarging head piles, which is applied in the field of enlarging head piles, and can solve problems such as not proposing inner holes

Active Publication Date: 2010-12-29
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while the end-enlarged disk must essentially be perforated with a bore (since the bore acts as a discharge hole allowing grout introduced through the bore of the hollow pile to reach the end of the pile), no bore of appropriate size has been proposed.

Method used

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  • Extended pile with a point plate formed the critical inner-hole
  • Extended pile with a point plate formed the critical inner-hole
  • Extended pile with a point plate formed the critical inner-hole

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Embodiment Construction

[0016] In order to realize the above-mentioned technical solution, the present invention provides a head-enlarging pile, which includes an enlarged end disc, which is arranged at the end of the hollow circular pile for increasing the end of the hollow circular pile. Supporting force, the outer diameter of the end enlarged disk is larger than the outer diameter of the end cross-section of the hollow circular pile, wherein the end enlarged disk is in the form of an annular band with an inner hole pierced in its cross section, so The diameter of the inner hole is smaller than the diameter of the central cavity of the hollow circular pile, and the width of the end enlarged disk is in the range of 40% to 70% relative to the outer diameter of the end enlarged disk.

[0017] The headed piles may be pretensioned prestressed high strength concrete (PHC) piles.

[0018] An exemplary embodiment of the present invention will be described in detail below with reference to the accompanying ...

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PUM

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Abstract

This invention relates to a pile whereof the head is expandable, wherein a leading end expansion plate having a larger size than the cross section of the pile leading end is installed at the leading end of the pile to improve the leading end bearing force of a hollow pile. More specifically, the invention relates to a pile whereof the head is expandable, wherein the inner hole has an optimal size which is smaller than the cavity of the pile and formed on the surface of a leading end expansion plate. The disclosed pile, whereof the head is expandable and which has a leading end expansion plate including a critical inner hole, is a pile where the leading end expansion plate has a larger size than the cross section diameter of the pile leading end to improve the leading end bearing force of a hollow pile. The leading end expansion plate is shaped like a circular band, wherein a hole smaller than a cavity of pile is formed. Especially, the width (tplate) of the leading end expansion plate is below the range of 40-70% as compared with the radius (Do) of leading end expansion plate.

Description

technical field [0001] The present invention relates to a head-expanding pile, wherein the end of the hollow pile is provided with an enlarged end disk, and the size of the enlarged end disk is larger than the cross-sectional size of the end, so as to enhance the supporting force of the end of the hollow pile. More specifically, the present invention relates to an underreamed pile, wherein the end enlarged disc is formed in its cross-section with an inner hole having an optimized diameter smaller than the inner diameter of the hollow pile. Background technique [0002] Generally, foundation construction is performed to strengthen the foundation of a building or structure or to increase the supporting force of the ground to safely support the foundation. According to the specific implementation method of foundation construction, foundation construction can be divided into hardened foundation construction (hardening with gravel, sand, gravel, etc.), pile raft foundation constr...

Claims

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Application Information

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IPC IPC(8): E02D5/44
CPCE04H12/2238
Inventor 宋寄镛
Owner EXT
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