Prefabricated variable-section pile and construction method thereof

A variable-section pile and integral prefabrication technology, applied in sheet pile walls, infrastructure engineering, construction, etc., can solve the problems of incomplete welding at the joint position, hidden quality problems of the pile body, corrosion durability, etc., to avoid welding, reduce Construction period and the effect of reducing construction pollution

Pending Publication Date: 2018-11-30
JIANYAN DETECTION GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional inverted stepped variable section piles are mainly connected by cast-in-place piles or assembled on-site. However, cast-in-place piles are inconvenient in construction and have a long construction period. long) and other deficiencies; on-site assembly connection has high requirements for the connection quality at the variable cross-section position due to the stress concentration at the variable cross-section position, but the joint position is prone to problems such as insufficient welding, corrosion durability, etc. bring hidden danger

Method used

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  • Prefabricated variable-section pile and construction method thereof
  • Prefabricated variable-section pile and construction method thereof
  • Prefabricated variable-section pile and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] See figure 1 As shown, a prefabricated variable cross-section pile of the present invention is used to transfer the load of the superstructure to the foundation, including a pile body 1, which is manufactured by prefabricated components, integrally formed, and includes at least two sections of the pile body, And among every two adjacent pile bodies, the cross-sectional size of the upper pile body is greater than the cross-sectional size of the lower pile body. That is to say, the cross-sectional dimension of the pile body 1 becomes smaller from top to bottom, and changes in an inverted step shape. The cross-sectional size of each section of the pile itself is consistent from top to bottom, that is, each section of the pile itself is a pile of equal section. The cross-sectional dimension may be diameter (cylindrical piles, for hollow cylindrical piles or tubular piles etc. the outer diameter) or side length (polygonal piles) and the like.

[0037] In this embodiment, t...

Embodiment 2

[0041] See figure 2 As shown, the difference between it and the first embodiment above is that splicing piles are respectively connected to the top and bottom ends of the pile body 1, and the splicing piles are integrally prefabricated. In order to facilitate the distinction, the spliced ​​pile connected to the top of the pile body 1 is named as the upper spliced ​​pile 2, and the spliced ​​pile connected to the bottom of the pile body 1 is named the lower spliced ​​pile 3. The upper connection pile 2 and the lower connection pile 3 also adopt the prefabricated production method.

[0042] In this embodiment, the pile body 1, the upper connecting pile 2, and the lower connecting pile 3 are all butted with equal sections, that is, the cross-sectional size of the upper connecting pile 2 and the cross-sectional size of the large-section pile body 11 of the pile body 1 Consistent, the cross-sectional dimension of the lower pile 3 is consistent with the cross-sectional dimension o...

Embodiment 3

[0051] See image 3As shown, the difference between it and the first embodiment is that the transition surface between the large-section pile body 11 and the small-section pile body 12 of the pile body 1 is a circular platform with a large top and a small bottom.

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Abstract

The invention discloses a prefabricated variable-section pile and a construction method thereof. The prefabricated variable-section pile is used for transmitting the load of an upper building to a foundation. The variable-section pile comprises a pile body, the pile body is integrally prefabricated and formed, and comprises at least two sections of pile main bodies, and in every two adjacent pilemain bodies, the cross section size of the upper pile main body is larger than that of the lower pile main body. According to the prefabricated variable-section pile, the characteristic that axial force of the pile main bodies gradually decreases from top to bottom when the pile main bodies resist pressure is met, materials are fully utilized, and resources are saved. The pile body is integrally prefabricated and produced, so that the construction period is greatly shortened, connection assembly of large-section pile main body sections and small-section pile main body sections on site is alsoavoided, and the technical problems of variable-section weld, connection, assembly and the like are effectively solved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a prefabricated variable-section pile and a construction method thereof. Background technique [0002] With the increasing application of pile foundations in practical engineering, the deformation, bearing capacity and project cost of pile foundations have gradually become very concerned issues in the field of civil engineering. In this context, many scholars and engineers have continuously explored and innovated on the research and application of pile foundations, and many new pile types have emerged continuously. Due to the fact that the axial force of the pile body decreases gradually from top to bottom when the pile is subjected to compressive force, there is a waste of material in the pile body for constant-section piles. Variable variable cross-section production is not easy to achieve. In order to simplify the production process and achieve a reasonable cost re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/48E02D5/30
CPCE02D5/30E02D5/48
Inventor 张八芳邱聪张勇肖健友陈远鹏黄江枫
Owner JIANYAN DETECTION GRP CO LTD
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