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Test device for testing bituminous pavement shear failure

A technology of shear failure and test device, which is applied in the direction of measuring device, using a stable shear force to test the strength of materials, instruments, etc., can solve the lack of test device for the detection of unchecked shear stress, shear failure, and pavement horizontal force and other problems, to achieve the effect of simple structure and convenient operation

Active Publication Date: 2018-03-06
CHANGAN UNIV
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AI Technical Summary

Problems solved by technology

[0002] Asphalt pavement is more prone to shear failure at intersections and downhill slopes, mainly because the braking of vehicles will generate a large horizontal force on the road surface. The code requires that the shear stress should be checked when designing the pavement. However, most pavement designers The shear stress has not been checked. In addition, there is a lack of available test equipment for the detection of the horizontal force of the road surface.

Method used

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  • Test device for testing bituminous pavement shear failure
  • Test device for testing bituminous pavement shear failure

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Embodiment Construction

[0018] The present invention is described in further detail below in conjunction with accompanying drawing:

[0019] refer to figure 1 , the test device for testing asphalt pavement shear failure according to the present invention comprises a control system, a test bench 24, a reaction force frame positioned on the test bench 24 and a temperature control box 1, a sample platform for placing the sample 6 to be tested 4, be positioned at the wheel 15 on the sample to be tested 6, be used to drive the lateral driving device that the wheel 15 moves on the surface of the sample to be tested 6, be used to make the vertical force that the wheel 15 exerts pressure on the surface of the sample to be tested 6 device, a displacement sensor 22 for detecting the horizontal displacement of the surface of the sample 6 to be tested, a lateral pressure sensor 21 for detecting the thrust of the lateral drive device on the wheel 15, and a pressure sensor for detecting the pressure applied by the...

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PUM

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Abstract

The invention discloses a test device for testing bituminous pavement shear failure. The test device comprises a control system, a test stand, a reaction frame and a temperature control box located onthe test stand, a sample loading table for placing a sample to be tested, a wheel located on the sample to be tested, a horizontal drive device for driving the wheel to move on a surface of the sample to be tested, a vertical forcing device for enabling the wheel to apply pressure on a surface of the sample to be tested, a displacement sensor for detecting horizontal displacement of the surface of the sample to be tested, a horizontal pressure sensor for detecting a pushing force of the horizontal drive device on the wheel, and a vertical pressure sensor for detecting pressure of the wheel applied on the surface of the sample to be tested. The device can simulate damage of a vehicle on a pavement under the conditions of different loads, different temperatures and different initial horizontal forces, and meanwhile, can simulate a braking process of the vehicle.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and relates to a test device for testing shear damage of asphalt pavement. Background technique [0002] Asphalt pavement is more prone to shear failure at intersections and downhill slopes, mainly because the braking of vehicles will generate a large horizontal force on the road surface. The code requires that the shear stress should be checked when designing the pavement. However, most pavement designers The shear stress has not been checked. In addition, there is a lack of available test devices for the detection of the horizontal force of the pavement. With the vigorous development of expressways, the requirements for road surfaces are getting higher and higher, and the design of weak links is even more important. Therefore, it is particularly important to simulate the braking effect of vehicles and detect the shear failure of asphalt pavement under this effect. important. In order...

Claims

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Application Information

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IPC IPC(8): G01N3/02G01N3/24
CPCG01N3/02G01N3/24G01N2203/0222
Inventor 裴建中郭福成张久鹏朱存贞李蕊周波超马伟思李雪倩郭琦琪
Owner CHANGAN UNIV
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