Tension-shear coupling characteristic tester of asphalt concrete material

Abstract

The invention discloses a tension-shear coupling characteristic tester of an asphalt concrete material. The tester comprises a temperature control box, vertical uploading control system for shearing a load, a transverse uploading control system for tensioning or compressing the load, and a coupling characteristic testing centre for controlling the temperature of the temperature control box, the vertical uploading and the transverse uploading and obtaining a tensioning stress and a shearing stress in the horizontal direction according to fitting of a tensioning-compressing displacement and a shearing displacement; a station platform for placing the asphalt concrete material to be tested is arranged in the temperature control box; the vertical uploading control system comprises a vertical oil cylinder, a vertical servo valve, a vertical displacement sensor and a vertical uploading controller; the transverse uploading control system comprises a transverse oil cylinder, a transverse servovalve, a horizontal displacement sensor and a transverse uploading controller; and the vertical uploading controller and the transverse uploading controller both are connected with the coupling characteristic testing centre. The tension-shear coupling characteristic tester of the asphalt concrete material can test the tension-shear coupling characteristic at controllable temperature.

Description

technical field [0001] The present invention relates to asphalt concrete pavement material mechanical properties equipment, especially a kind of equipment for reproducing the deformation characteristics and static dynamic response of asphalt pavement in the actual use process on site, which is a kind of equipment including local loading tension, local loading tension or compression and shear coupling , a comprehensive tester for partial cyclic loading, and can comprehensively detect and evaluate the tensile and shear cracking failure characteristics of asphalt pavement based on test results, mechanical theory and numerical simulation. Background technique [0002] At present, the main methods of testing and researching the deformation mechanical properties of road asphalt pavement surface at home and abroad are: Marshall method, triaxial test method, creep test method, rutting test method and shear test method. In many countries such as the United States, Japan, and my count...

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Problems solved by technology

[0006] In order to overcome the inadequacy of existing equipment for the mechanical properties of asphalt concrete pavement materials that cannot detect the coupling properties of tension and shear, the present invention provides an asphalt concrete material tension-shear device that can detect the coupling properties of tension and shear under temperature controllable conditions. Coupling characteristic tester

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