Pavement structure and testing device for bridge deck pavement bonding interface shearing-resistance characteristic

Abstract

The invention relates to a pavement structure and a testing device for bridge deck pavement bonding interface shearing-resistance characteristic, which are based on mechanics principle and indoor test, effectively simulate road surface and simulate stress conditions, can realize continuous change with 0-80 degrees of shearing angle, meet needs of different working conditions and are suitable for the design and research of the pavement structure, the indoor test and engineering test. The testing device comprises an upper part and a lower part, each part comprises a bearing board, a rolling shaft, an arc base, a semi-circular clamp, an internal collet and a clamp fixing device. The whole device also comprises an angle dial scale and an angle pointer and other attached parts which are used for indicating the size of the angle. A square testing piece is arranged in the internal collet, the semi-circular clamp and the base can rotate relatively, after the shearing angle is set, the clamp and the base are fixed by the clamp fixing device. The horizontal surface of the other side of the base is contacted with the bearing board in a rolling way by the rolling shaft, so as to lead the device loading to generate vertical displacement and to move horizontally at the same time.

Description

technical field [0001] The invention belongs to the field of road engineering, and is a device for the mechanical characteristics of pavement structure and bridge pavement, which relates to the test of the shear characteristics of the bonding interface of the pavement structure and the bonding interface of the bridge pavement, and is suitable for the design and research of the pavement structure , indoor test and on-site engineering inspection. Background technique [0002] The bonding interface is an important part of the pavement structure and bridge deck pavement. For example, in the bridge deck pavement, it bonds the pavement layer and the bridge deck into a whole, giving full play to the composite effect of the pavement layer and the bridge deck. Improve the stress condition between the bridge deck and the pavement, and enhance the fatigue resistance of the pavement. Its main function is to integrate the bridge deck and the lower layer of the pavement, coordinate the d...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no standard test method for the determination of the shear characteristics of the pavement structure or bridge pavement bond interface at home and abroad, and there is no unified test equipment. Most of them refer to the principle of geotechnical tests, such as direct shear tests, which cannot simulate actual engineering. Working conditions, the applicability to pavement or bridge deck needs to be improved

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