Method for processing ascending of inner soil of PCC pile

A processing method and pile core technology, which are applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve problems such as the rise of pile core soil, and achieve the effects of preventing pile core soil from rising, low cost, and reducing lateral frictional resistance.

Active Publication Date: 2010-04-07
HOHAI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the pile core soil rises in the PCC pile construction process, overcome the above-mentioned defects caused by the pile core soil rise, and provide a processing method for the rise of the PCC pile core soil

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  • Method for processing ascending of inner soil of PCC pile
  • Method for processing ascending of inner soil of PCC pile
  • Method for processing ascending of inner soil of PCC pile

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Embodiment Construction

[0019] Such as Figure 1~4 As shown, the cylindrical weight 6 is located inside the pile mold inner pipe 2, and its diameter is slightly smaller than the inner diameter of the pile mold inner pipe. The outer wall of the cylindrical weight 6 has rollers 7 in contact with the inner wall of the inner pipe 2, so that the cylindrical weight 6 can freely slide up and down in the pile mold inner pipe 2. The cylindrical weight 6 can be a prefabricated concrete solid cylinder, or can be formed by injecting water into a hollow cylindrical iron bucket, and its height can be 1.5-2m. Roller 7 is positioned at the outer wall upper part and the lower part of cylindrical weight 6, respectively four symmetrical distributions up and down. Water diversion pipe 8 is welded on the inwall of pile mold inner pipe 2, is made of hollow steel pipe, and the upper end is connected with high-pressure water source, and the lower end is connected with spray pipe 10. The spray pipe 10 is circular and close...

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Abstract

The invention discloses a method for processing the ascending of inner soil of a PCC pile, which is characterized in that: a cylindrical weight freely moving up and down is arranged in an inner pipe of a pile mould; the length of the inner pipe at a pile tip of the pile mould is increased to enable the length of the inner pipe to exceed a valve pile shoe; the bottom of the inner wall of inner pipe of the pile mould is provided with a water injector; the cylindrical weight presses the surface of the inner soil so as to prevent the inner soil from ascending; the water injector is used to form slurry on the outer surface of the inner soil so as to reduce the side frictional resistance to the inner soil; and simultaneously, the length of the inner pipe at a pile head is increased so as to reduce the acting force for ascending the inner soil. The method ensures simple structure, easy implementation, simple and convenient operation and low cost, can prevent the inner soil from ascending effectively, and is a high-efficient and practical method in the construction of the PCC pile.

Description

technical field [0001] The invention relates to a construction method, in particular to a method for processing PCC pile core soil rising. Background technique [0002] Cast-in-situ concrete large-diameter pipe piles (referred to as PCC piles, patent numbers 02112538.4 and 01273182.X), use vibration to sink the steel inner and outer double-layer casing cavity structure (pile mold) under the protection of the valve pile shoe closure. Into the design depth of the foundation, inject concrete into the structure evenly through the concrete divider, and then vibrate the cavity structure, the movable valve spud cans will be separated automatically when the cavity structure is set out, and the concrete will be formed after the cavity structure is set out In the annular groove, PCC piles are formed. The outer diameter of PCC piles is generally 1.0 to 1.5 meters, the wall thickness is 10 to 15 centimeters, and the pile sinking depth is 20 to 30 meters. PCC piles obtain greater beari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38
Inventor 刘汉龙丁选明周密
Owner HOHAI UNIV
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