A kind of unbonded prestressed geogrid with anti-bending performance

A geogrid, non-bonded technology, applied in the field of reinforced materials, can solve the problems of increased contact area and increased friction, and achieve the effect of reducing friction and increasing bending deformation capacity

Inactive Publication Date: 2015-12-02
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The internal ribs of the existing reinforced materials are plate-shaped materials, and the contact area between the internal and external reinforced materials will increase when the cross-sectional area is the same, which will increase the friction between them

Method used

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  • A kind of unbonded prestressed geogrid with anti-bending performance
  • A kind of unbonded prestressed geogrid with anti-bending performance
  • A kind of unbonded prestressed geogrid with anti-bending performance

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Embodiment Construction

[0026] The implementation will be described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to this specific implementation.

[0027] Figure 5-Figure 10 The unbonded prestressed geogrid of the present invention includes a main stress-bearing part 1 and a secondary stress-bearing part 2 . The main stress-receiving part 1 includes an inner reinforcement material 3 and an outer reinforcement material 4 , and graphite is filled between the outer reinforcement material 4 and the inner reinforcement material 3 . The secondary stress-bearing part 2 is in the form of a geogrid, which is the same material as the external reinforcement material 3 of the main stress-bearing part 1 .

[0028] The external reinforcement material 4 of the main force receiving part 1 is in the shape of a circular tube, which can effectively disperse the received force to the secondary force receiving part 2; the internal reinforcement ma...

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Abstract

The invention relates to an unbonded prestressing geogrid with fracture resistance. The unbonded prestressing geogrid with fracture resistance comprises main force-bearing portions and auxiliary force-bearing portions. Each main force-bearing portion comprises an internal reinforcement material and an external reinforcement material, wherein a steel strand with a round section is used as the internal reinforcement material, a round tube made of a polypropylene or polyvinyl chloride composite material is used as the external reinforcement material, and the space between the internal reinforcement material and the external reinforcement material is filled with graphite used as a lubricant. The main fore-bearing portions are connected through the auxiliary force-bearing portions in a geogrid mode, so that deformation of a soil mass between bar strips is coordinated. According to the unbonded prestressing geogrid with fracture resistance, under the condition that the tension capacity is not changed, the bending deformation capacity of the sections of the reinforcement materials is improved, stress is more reasonable, performance is more reliable, and particularly certain fracture resistance is achieved.

Description

technical field [0001] The invention relates to a non-bonded prestressed reinforced material, in particular to a non-bonded prestressed geogrid with anti-bending performance, which belongs to the technical field of reinforced materials. Background technique [0002] In the field of geotechnical reinforcement technology, unbonded prestressed reinforced soil technology is an efficient geotechnical reinforcement technology. This technology uses a combination of active and passive constraints to reinforce the fill. The active constraint is to apply a certain prestress to the reinforced material so that the side baffles can exert a certain constraint on the fill and increase the stability of the fill. and reduce the vertical settlement of the fill; passive restraint is to use the outer material of the reinforced material and the fill to form a whole to restrain the deformation of the fill, and finally achieve the purpose of reducing the vertical deformation of the fill and increa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/00
Inventor 周芬郭奥飞杜运兴
Owner HUNAN UNIV
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