Device and method for testing interface slippage performance of fiber composite material rod and binder

Abstract

The invention relates to a device and a method for testing the interface slippage performance of a fiber composite material rod and a binder, and the device comprises an abutting plate which is clamped on the fiber composite material rod in a sleeving manner and abuts against a first end part of a sleeve; a fixing frame which is connected to the abutting plate, wherein the arrangement direction of the fixing frame is consistent with the arrangement direction of the sleeve, and a connecting end is formed at the position, close to the second end of the sleeve, of the fixing frame; a first clamping plate which is clamped and fixed at the first end part of the sleeve and is attached to the abutting plate; and a first displacement sensor which is parallel to the fiber composite material rod, wherein the detection end of the first displacement sensor penetrates through the abutting plate and is attached to the first clamping plate. According to the invention, the abutting plate is used for tightly abutting against the sleeve in the measuring process, it can be ensured that the displacement of the sleeve is zero, the influence of sliding of the sleeve on a test result is reduced, and the accuracy of the test result is improved. The measuring device is simple in structure, convenient to install and wide in application range.

Description

technical field [0001] The invention relates to the field of construction measurement equipment, in particular to a device and method for testing the sliding performance of the interface between a fiber composite material rod and an adhesive. Background technique [0002] With the development of the economy and society, building a transportation power has become a national strategic goal. There are more and more structures such as long-span bridges and sea-crossing bridges. There are serious corrosion phenomena in wires and prestressed concrete steel strands, which lead to huge maintenance costs and troublesome maintenance. Fiber-reinforced composite materials, especially carbon fiber-reinforced composite materials, have ultra-high tensile strength comparable to steel strands, but at the same time have very good durability properties, making them ideal substitutes for steel strands. [0003] In order to take advantage of the high strength and high durability of fiber reinfo...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the prior art, to provide a device and method for testing the sliding performance of the interface between the fiber composite material rod and the adhesive, and to solve the problem caused by the unavoidable gap between the chuck and the steel pipe during the test of the existing tensile machine. Slippage causes measurement errors and inaccurate measurement results

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