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Adjustable prestressed anchoring device

An anchoring device and prestressing technology, which is applied to the installation of anchor rods, sheet pile walls, mining equipment, etc., can solve problems such as the inability to ensure the safety and stability of the ground, and achieve the effect of improving safety and increasing reliability

Active Publication Date: 2011-06-29
CHINA RAILWAY TUNNEL GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Geological disasters such as earthquakes, landslides, and collapses occur frequently. Due to the creep of the ground, steel relaxation, structural changes, etc., the prestress value of the anchor bolt changes, and the effect of the anchoring system cannot guarantee the safety and stability of the ground.

Method used

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  • Adjustable prestressed anchoring device
  • Adjustable prestressed anchoring device
  • Adjustable prestressed anchoring device

Examples

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Embodiment Construction

[0012] The present invention is further described in conjunction with accompanying drawing and embodiment:

[0013] Such as figure 1 , figure 2 shown, and refer to image 3 , Figure 4 , an adjustable prestressed anchoring device, the bearing plate 8 is fixed on the support body connecting beam or waist beam, the base 5 is connected and fixed with the bearing plate 8 through the bolt 6; the base 5 has a column sleeve, and the base The bottom surface of the base has a through hole for the anchor cable to pass through; the center of the bottom surface of the base has a counterbore for the insertion of the displacement screw 7; the bearing plate has a through hole for the anchor cable to pass through at the position corresponding to the through hole on the bottom surface of the base hole; the anchor cable 1 passes through the through hole on the anchor plate 3, the base 5 and the bearing plate 8 and is fastened by the clip 2 in the anchor plate 3 through hole; the anchor cabl...

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PUM

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Abstract

The invention belongs to the technical field of anchoring of rock and soil of civil engineering and provides an adjustable prestressed anchoring device. The anchoring device comprises an anchor cable (1), a clamping piece (2), an anchor disk (3), a base (5), a position-changing screw rod (7) and a pressure-bearing plate (8), wherein the anchor disk (3) which comprises a central threaded hole and can change the position is positioned in a column sleeve of the base and can move axially under the action of the position-changing screw rod (7), move axially relative to the base (5), the bearing plate (8), a coupling beam or a waist beam under the action of external force, enable the anchor cable which is fixed on the anchor disk (3) through the clamping piece (2) to move axially accordingly, and actively compensate for strain generated by stress variation of the anchor cable. The anchoring device can actively compensate for the strain generated by the stress variation, further enable the prestress of the prestressed anchor cable to change within an allowable range, increase the reliability of the anchoring system and improve the safety.

Description

technical field [0001] The invention belongs to the technical field of rock and soil anchoring in civil engineering, and mainly relates to an adjustable prestressed anchoring device. Background technique [0002] In the field of civil engineering, geotechnical anchoring technology is also becoming mature and perfect in terms of engineering practice experience and corresponding theoretical research. In the construction process of underground engineering, tunnel engineering, mining engineering, reclamation engineering, slope and foundation pit and other projects, in order to prevent the dangerous state of foundation deformation, collapse or instability caused by earthquakes, blasting, landslides and other disasters, extensive Bolt and anchor cables are used to support and strengthen the ground. The ground is reinforced by using the anchor rods and cables and the corresponding grouting consolidation bodies set in the ground, so as to improve the integrity of the ground, contro...

Claims

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Application Information

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IPC IPC(8): E02D5/74E21D21/00
Inventor 赵琰飞任彦超胡建林姚海波张献勇干昆蓉杨毅尹龙
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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