A multi-interface shear stress joint test device for non-metallic anti-floating anchor rods

Abstract

The invention belongs to the technical field of in-situ testing equipment for civil engineering and relates to a joint testing device for non-metallic anti-floating anchor multi-interface shear stress. A locking anchor is installed on a stress diffusion tray and is connected to an anchor rod body. A first through steel pad, a load sensor, a second through steel pad, a through jack and a third through steel pad are orderly installed under the stress diffusion tray. A self-made displacement test device is bonded to the anchor rod body, and the through reaction beam is placed I-shaped steel support beams at two sides of the anchor rod body. The self-made displacement test device and an anchor fixed body exposed surface are equipped with a fiber grating displacement meter, three self-compensating micro-FBG strain sensor strings are in an arrangement form of a dense upper side and a sparse lower side. The device has the advantages of a simple structure, high testing precision and high operability, a numerical result is direct and accurate, and the non-metallic anti-floating anchor multi-interface shear stress can be obtained, and the applicability and feasibility are high.

Description

Technical field: [0001] The invention belongs to the technical field of in-situ test equipment for civil engineering, and relates to a multi-interface shear stress joint test device for non-metallic anti-floating anchor rods. The axial force and shear stress of the second interface (rock mass and anchor body interface) provide a basis for the research and application of non-metallic anchor rods. Background technique: [0002] 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 engineering and adverse geological environments can also break the restriction that traditional metal anchors cannot be used for anti-floating in the construction of unde...

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

Images