Foundation pit side wall prestressed anchor rod spreader beam row pile enclosing structure

An enclosure structure and prestressing technology, which is applied in the direction of foundation structure engineering, excavation, construction, etc., can solve the problems of large amount of enclosure pile materials, inability to realize flexible layout, and easy quality problems, so as to shorten the construction period and ensure the enclosure The effect of maintaining quality and reducing the amount of materials

Inactive Publication Date: 2011-11-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of large amount of enclosure and row pile materials (horizontal continuous beams) in the existing foundation pit side wall pile enclosure structure; and the use of horizontal continuous beams requires steel plate wedge pads, which is not convenient for installation and cannot be flexibly arranged. , prone to quality problems, and then provides a foundation pit side wall prestressed anchor beam beam pile enclosure structure

Method used

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  • Foundation pit side wall prestressed anchor rod spreader beam row pile enclosing structure
  • Foundation pit side wall prestressed anchor rod spreader beam row pile enclosing structure
  • Foundation pit side wall prestressed anchor rod spreader beam row pile enclosing structure

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specific Embodiment approach 1

[0010] Specific implementation mode one: as Figure 1-7 As shown, the foundation pit side wall prestressed anchor beam beam pile enclosure structure described in this embodiment includes a plurality of anchor connectors and a plurality of segmented beams 1, and each segmented beam 1 passes through At least one anchor connecting piece firmly abuts (supports) on two adjacent rows of piles 4, and the plurality of segmented beams 1 are arranged from top to bottom along the pile height direction.

specific Embodiment approach 2

[0011] Specific implementation mode two: as Figure 1-7 As shown, the segmented load beam 1 in this embodiment is a profiled steel load beam, and each segmented load beam 1 includes two channel steels 1-1, at least two decorative plates 1-2 and at least one pair of wedge-shaped steel plates 1-3, two channel steels 1-1 are arranged parallel to each other and welded together by at least two patch plates 1-2 arranged in a dispersed manner, and at least one pair of wedge-shaped steel plates 1-3 are welded on two grooves arranged in parallel and opposite The outer side of Steel 1-1. The thickness of the wedge-shaped steel plate 1-3 can be 10mm-20mm. A pair of wedge-shaped steel plates 1-3 are double-sidedly welded to the section steel beam. Other components and connections are the same as those in the first embodiment.

[0012] The beam section of the segmented beam described in this embodiment is connected by two channel steels to form an I-shaped steel, and the commonly used s...

specific Embodiment approach 3

[0013] Specific implementation mode three: as Figure 1-7 As shown, each anchor connector in this embodiment includes a prestressed anchor 2 and an anchor 3, the anchor end of the prestressed anchor 2 is fixed in the soil body of the side wall of the foundation pit, and the prestressed steel of the prestressed anchor 2 The beam 2-1 passes through the gap between two adjacent rows of piles 4 and the segmented load beam 1 is tightened by the anchor 3, and a pair of wedge-shaped Steel plate 1-3. The edge of the channel steel is strictly forbidden to be strung, that is, there is a certain gap between the prestressed steel beam 2-1 and the edge of the channel steel. Other components and connections are the same as those in the second embodiment.

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Abstract

The invention discloses a foundation pit side wall prestressed anchor rod spreader beam row pile enclosing structure and relates to the foundation pit side wall row pile enclosing structure. The invention aims at solving the problems that the using quantity of enclosing row pile material is large in the existing foundation pit side wall row pile enclosing structure, as well as inconvenience in mounting, incapability of realizing flexible arrangement, easy occurrence of quality problem and the like because steel plate wedge block needs to be used for padding when a horizontal continuous beam is adopted. The row pile enclosing structure comprises a plurality of anchor device connecting parts and a plurality of sectional type spreader beams, each sectional type spreader beam firmly leans against two adjacent row piles through at least one anchor device connecting part and the plurality of the sectional type spreader beams are arranged from top to bottom along the height direction of pile bodies. In comparison with the general continuous beam, the sectional type spreader beams have the advantages that section steel can be saved by 20-35%, as the sectional type spreader beams can lean against the row piles firmly, the support requirements of a computation module can be completely met, the support failure is not additionally reckoned in due to a mounting clearance and the using quantity of the enclosing row pile material can be reduced. The sectional type spreader beams can be flexibly arranged so that the foundation pit side wall enclosing becomes safe and reliable.

Description

technical field [0001] The invention relates to an enclosure structure of row piles on the side wall of a foundation pit. Background technique [0002] Generally, when the excavation under the ground is more than 5 meters deep, the side wall enclosure of the foundation pit needs to adopt pressed-in steel piles (I-shaped) or bored cast-in-place piles. No matter what kind of pile row is used, it is necessary to set several horizontal continuous beams from top to bottom along the height direction of the pile body (that is, the depth direction of the foundation pit) to support the pile row, and use the prestressed anchor rod as the support. Constitute the deep foundation pit side wall enclosure structure system. However, for nearly 20-meter-long piles that are pressed or drilled into the soil from the ground, the verticality of the pile body and the displacement error of the pressing point are very large. Each pile goes in and out along the plane of the side wall of the founda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02
Inventor 白福波王洪兴张煜刘界鹏刘志伟
Owner HARBIN INST OF TECH
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