Flexible support structure of pre-stress anchor rod for lattice type frame and construction method of flexible support structure

A supporting structure and prestressing technology, which is applied in basic structure engineering, excavation, sheet pile wall, etc., can solve the problems of insufficient anti-overturning ability, poor overall stability, poor seismic performance, etc., to reduce soil erosion and improve seismic performance. , the effect of less disturbance

Inactive Publication Date: 2012-01-25
LANZHOU UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0003] The disadvantages of this support technology are: 1) self-heavy; 2) high rigidity, poor seismic performance; 3) poor overall stability, insufficient anti-overturning ability

Method used

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  • Flexible support structure of pre-stress anchor rod for lattice type frame and construction method of flexible support structure
  • Flexible support structure of pre-stress anchor rod for lattice type frame and construction method of flexible support structure
  • Flexible support structure of pre-stress anchor rod for lattice type frame and construction method of flexible support structure

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Embodiment Construction

[0015] The present invention is a lattice frame prestressed bolt flexible support structure and its construction method. In the support structure, the beam 1 and the column 2 form a lattice frame, and the prestressed anchor 3 passes through the intersection of the beam 1 and the column 2. position, wrap cement mortar around the anchoring section 5 of the prestressed anchor 3, coat a layer of anti-corrosion material on the free section 11 of the prestressed anchor 3, and set a PVC plastic sleeve 12 outside the anti-corrosion material. Cement mortar is wrapped around the casing 12, and the anchor head 4 anchors the end of the prestressed anchor rod 3 at the intersection of the beam 1 and the column 2, and the earth pressure on the beam 1 and column 2 is transmitted to the prestressed The anchor section 5 of the anchor rod 3 is anchored in the stable soil layer through the anchor section 5 .

[0016] The inclination angle of the anchor rod formed by the prestressed anchor rod 3 a...

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PUM

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Abstract

The invention discloses a flexible support structure of a pre-stress anchor rod for a lattice type frame and a construction method of the flexible support structure. Cross beams (1) and upright posts (2) form the lattice type frame; the pre-stress anchor rods (3) penetrate through the crossed parts between the cross beams (1) and the upright posts (2); the periphery of an anchored section (5) of each pre-stress anchor rod (3) is wrapped by cement mortar; the periphery of a plastic sleeve (12) is wrapped by cement mortar; and the end parts of the pre-stress anchor rods (3) are anchored at the crossed parts between the cross beams (1) and the upright posts (2) by an anchor head (4) and are anchored in a stable soil layer through the anchored section (5). The method comprises the following steps of: firstly, manufacturing and constructing the pre-stress anchor rods (3); secondly, casting a coping top beam (6), the upright posts (2) and the cross beams (1); thirdly, carrying out prestress tensioning on a reinforced anchor bar (10); and fourthly, constructing the pre-stress anchor rods (3), the cross beams (1) and the upright posts (2) on next work surface according to the step and finishing the tensioning and the anchoring of the pre-stress anchor rod (3) on each layer.

Description

technical field [0001] The invention relates to the field of loess side slope support with relatively gentle gradient. Background technique [0002] In the past, gravity retaining walls were mostly used as support technology for roads, railways and building slopes with gentle slopes in loess areas. The method of gravity retaining wall can be made of rubble masonry or plain concrete pouring. This method mainly relies on the self-weight and stiffness of the retaining wall to resist the lateral pressure of the soil behind the wall. [0003] The disadvantages of this support technology are: 1) self-heavy; 2) high rigidity and poor seismic performance; 3) poor overall stability and insufficient anti-overturning capability. Therefore, the overturning and slipping of the retaining wall often occurs, which affects the safety of engineering facilities. In order to improve the stability of the loess slope and strengthen its seismic performance, the flexible support method of lattice ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D5/74
Inventor 朱彦鹏周勇李忠董建华马天忠叶帅华毕东涛任永忠
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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