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A joint test method for multi-interface shear stress of non-metallic anti-floating anchor

An anti-floating anchor and joint testing technology, which is applied in the direction of measuring force components, etc., can solve problems that have not been involved in the mechanical properties of the anchor body and the bonded interface, and achieve the effect of ensuring accuracy

Active Publication Date: 2019-08-02
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing research on the stress of GFRP anti-floating anchors, the stress test device is generally used to obtain the distribution form and size of the axial stress and shear stress of the anchor during the pulling process of the anchor, and to understand the loading mechanism of the anchor. Study on Mechanical Properties of Adhesive Interface

Method used

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  • A joint test method for multi-interface shear stress of non-metallic anti-floating anchor
  • A joint test method for multi-interface shear stress of non-metallic anti-floating anchor
  • A joint test method for multi-interface shear stress of non-metallic anti-floating anchor

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Embodiment

[0048] This embodiment is realized by using a multi-interface shear stress joint test device for non-metallic anti-floating anchor rods, and the specific process is as follows:

[0049] (1) Put the anchor rod body 1 implanted in the self-compensating miniature FBG strain sensor string 16 into the anchor rod bracket 15 every 0.5m, and tighten the fixing nuts to ensure that the anchor rod bracket 15 is firm and stable in the anchoring section of the rod body, Ensure not to move up and down (the self-compensating miniature FBG strain sensor string 16 in the rod body checks its survival rate (survival rate must not be lower than 90%) respectively before and after being implanted in the anchor rod body 1);

[0050] (2) Fix the hard steel wire 22 on the anchor bracket 15 with the binding wire 21 as required, and ensure that the hard steel wire 22 is respectively located in the middle position of the radial direction of the mortar anchor and the second interface (the outer surface of ...

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Abstract

The present invention belongs to the civil engineering in-situ test technology field, and relates to a nonmetal anti-floating anchor multi-interface shear stress combination test method. The method performs synchronization real-time measurement of axial forces and shear stresses of a nonmetal anti-floating anchor body, an anchorage body and an interface of a rock and the anchorage body, and employs a novel test device to obtain pull-out amounts of the rod body and the anchorage body to research an anti-floating anchor mechanical transmission mechanism and deformation characteristics. The nonmetal anti-floating anchor multi-interface shear stress combination test method is simple in technology, simple in structure, high in test precision, high in operationality and direct and accurate in numerical result, can obtain multi-interface shear stress of a nonmetal anti-floating anchor, and is high in applicability and feasibility.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of in-situ testing of civil engineering, and relates to a multi-interface shear stress joint test method of a non-metallic anti-floating anchor, which is simple in operation and accurate in testing, and can simultaneously obtain the body of the non-metallic anti-floating anchor, the anchor body and the second The axial force and shear stress of the two interfaces (rock mass and anchor body interface) provide a basis for the research and application of non-metallic anchor rods. [0003] Background technique: [0004] Glass fiber reinforced polymer (Glass Fiber Reinforced Polymer, GFRP) bolts have the advantages of high tensile strength, good corrosion resistance, low relaxation and strong anti-electromagnetic interference ability, and their application in the field of anti-floating engineering can not only solve the traditional The problem of serious corrosion and aging of metal anchors in offshore eng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/16
Inventor 张明义白晓宇陈小钰王永洪赵天杨牟洋洋
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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