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Prestressed foundation pit support bored pile

A technology for bored piles and foundation pit enclosure, which is applied to sheet pile walls, foundation structure engineering, excavation, etc., can solve problems such as insufficient lateral rigidity, achieve small pile diameter, increase lateral rigidity, and good market benefits Effect

Pending Publication Date: 2019-05-03
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defect of insufficient lateral rigidity of bored piles in the background technology, the embodiment of the present application provides a prestressed foundation pit enclosure that increases the horizontal lateral rigidity by applying vertical prestress to the pile body while reducing the pile diameter. Protective Bored Pile

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  • Prestressed foundation pit support bored pile
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  • Prestressed foundation pit support bored pile

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Embodiment Construction

[0015] The technical solution of the patent of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or...

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Abstract

The invention provides a prestressed foundation pit support bored pile, which comprises a hollow cylindrical pile body. A cavity communicating in the axial direction of the pile body is formed in thepile body, and reinforcements are arranged in the cavity; a reinforcement cage is tightly connected with the pile body, a plurality of prestressed reinforcements are arranged on the positions, close to the excavated side of a foundation pit, on the pile body at intervals and extend in the axial direction of the pile body, and corrugated pipes coaxially sleeve the prestressed reinforcements; the top ends of the prestressed reinforcements and the top ends of the corrugated pipes are fixed to the end face of the top end of the pile body through anchorage devices; and the bottom ends of the prestressed reinforcements penetrate through the corrugated pipes and are fixed to the pile body through anchorage sections.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to a prestressed foundation pit enclosure bored cast-in-place pile. Background technique [0002] Bored cast-in-situ pile refers to the pile hole formed in the foundation soil by means of mechanical drilling and other means at the project site, and a steel cage is placed in it and concrete is poured into it. Bored piles are widely used in the design of foundation pit enclosure. However, the horizontal lateral stiffness of the enclosure pile is much worse than that of the ground connection wall, and the bending deformation in the foundation pit support is relatively large. Nowadays, many deep and large foundation pits are constructed close to the existing subway tunnels, and the requirements for controlling the impact of foundation pit excavation on shield tunnels are very strict. Therefore, the diameters of the retaining piles used in the foundation pit enclosure ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/58E02D5/34E02D17/04
Inventor 许四法王乔坎陆柯颖崔涵晟王哲马少俊
Owner ZHEJIANG UNIV OF TECH
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