Test device for axial tension load applied by concrete member

Abstract

The invention relates to a test device for an axial tension load applied by a concrete member. The test device comprises a concrete axial tension test piece, bearing steel plates loaded at the two ends of the concrete axial tension test piece, a plurality of T-shaped embedded parts with internal threads, a bearing screw rod and a strain gauge, wherein axially distributed reserved through holes are formed on the concrete axial tension test piece; the plurality of T-shaped embedded parts are respectively embedded at the two ends of the concrete axial tension test piece; the thread sections of the T-shaped embedded parts are pointed to the exterior of the concrete axial tension test piece; the bearing screw rod penetrates through the reserved through holes; nuts are arranged at the two ends of the bearing screw rod; the bearing steel plates are arranged on the outer side of the nuts; the thread sections of the T-shaped embedded parts are in screw joint with fastening bolts; the strain gauge is mounted on a side wall of the concrete axial tension test piece; a signal output end of the strain gauge is electrically connected with an external strain meter. The test device provided by the invention has the beneficial effects that the loading device can overcome the difficulty in applying the axial load; the operation is simple; the cost is low; the test device is anti-corrosion and is reusable; the volume of the test device is small; the fine threads are arranged at the two ends of the screw rod; the loading is labor-saving; the load size is easily controlled.

Description

technical field [0001] The invention relates to a test device for applying axial tensile load to a concrete member. Background technique [0002] Concrete structures in service work under the joint action of load and environment, and the research results of concrete durability under no load cannot reasonably reflect the actual state of the structure. Concrete structures are often subjected to erosion such as seawater, deicing salt, and carbon dioxide while bearing loads. Under the coupling effects of load and environmental factors or multiple factors, concrete structures often fail before reaching the design life. The huge economic loss and casualties caused by it have aroused widespread concern both at home and abroad. Concrete is a typical porous material, and the corrosive medium invades the interior of the concrete through the pores of the concrete, which leads to corrosion of steel bars and cracking of the concrete protective layer, which in turn affects the service pe...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of the existing concrete member axial tension load loading method, the present invention provides a small volume, simple operation, reliable method and low cost, which is convenient for concrete members to apply axial tensile load, and can be in erosion together with the concrete member Apparatus for applying axial tensile loads to concrete members subjected to media erosion tests

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