FRP reinforcement tension test apparatus and test method

Abstract

The invention provides an FRP reinforcement tension test apparatus and test method. The apparatus comprises two same anchorage devices and two same clamps, the anchorage devices are used for anchoring two ends of an FRP reinforcement, and every anchorage device comprises an octagon bolt, a steel tube, an epoxy resin-curing agent and a steel ring pad; two ends of every steel tube are provided with internal screw threads with the same length, an FRP reinforcement is arranged in every steel tube, a space between the FRP reinforcement and the steel tube is filled with the epoxy resin-curing agent, and ports at two ends of the steel tubes are respectively sealed with the octagon bolts and the steel ring pads; and the clamps clamp the anchorage devices through notches in the middle portions of the clamps, and the facing notch surfaces of the clamps, used for clamping the anchorage devices, are provided with transverse rib lines. The arrangement of the octagon bolts and the steel ring pads at the two ends of the steel tubes reduces the slurry leakage phenomenon of original anchorage devices, and makes effective bonding anchorage formed between the FRP reinforcements and the anchorage devices; and the surfaces of the clamps are provided with the rib lines, so the relative slip between the anchorage devices and the clamps is reduced.

Description

technical field [0001] The invention relates to a tensile test device and a test method for steel bar materials, in particular to an FRP bar tensile test device and a test method. Background technique [0002] The tensile strength of FRP bars is 2.5-4 times that of ordinary steel bars, and the density is 1 / 5 to 1 / 4 of ordinary steel bars. It has light weight, high strength, fatigue resistance, good durability, wide application, and does not change the original With the advantages of cross-sectional size, strong designability and easy processing, it can be used for the reinforcement and construction of civil engineering, water conservancy and other engineering structures, and can effectively solve the durability failure and insufficient bearing capacity of engineering structures. As a new type of lightweight and high-strength building composite reinforcement, the tensile strength detection of FRP reinforcement is very critical, which directly affects the accuracy of the tensi...

AI Technical Summary

Problems solved by technology

The production method is complicated, and the compression will damage the FRP tendon itself, which is still in the research stage

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