Road interface characteristic testing device and method

A technology of interface characteristics and testing devices, applied in the direction of measuring devices, surface/boundary effects, instruments, etc., can solve problems such as poor accuracy or poor practicability, and achieve the effects of wide application, improved measurement flexibility, and optimized laying schemes

Pending Publication Date: 2019-01-04
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +3
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Problems solved by technology

In the prior art, most of the interface characteristic tests between pavement structural layers are small-scale indoor tests for the purpose of scientific experiments. The purpose is mostly to test the real-time performance of the scheme in theory. Separated from the application environment, both accuracy and practicability are relatively poor

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  • Road interface characteristic testing device and method
  • Road interface characteristic testing device and method
  • Road interface characteristic testing device and method

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] Pavement structure generally refers to a multi-layer structure composed of surface layer, base layer and cushion layer. A base layer made of stone, and a support layer (ie surface layer) made of concrete material, and a base plate made of reinforced concrete for carrying the track can also be arranged on the support layer. In order to test the interface properties between the various structural layers of the pavement, such as friction coefficient and adhesive force, etc., the analysis and calculation can be carried out according to the strain of each structural layer under the s...

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Abstract

The invention relates to a road interface characteristic testing device, which is used for testing the interface characteristic between different structural layers of a pavement, wherein the structural layer of the pavement comprises at least a first structural layer arranged on the surface of the pavement and a second structural layer arranged below the first structural layer, and is characterized in that: the testing device comprises a normal force loading unit, which is arranged on the first structural layer, and applies a normal force perpendicular to the pavement of the first structural layer; a tangential force loading unit, which is provided with one side of the first structural layer and/or the normal force loading unit, and applies the tangential force parallel to the pavement ofthe first structural layer and/or the normal force loading unit; a acquisition unit , which is used for detecting the force applied by the normal force loading unit and the tangential force loading unit, and the strain generated by the normal force loading unit and/or the first structural layer; and a calculation unit, which is used for acquiring interface characteristic parameters representing the interface characteristics of the first structural layer and the second structural layer according to the acquired data analysis of the acquisition unit.

Description

technical field [0001] The invention relates to the technical field of road interface testing, in particular to a road interface characteristic testing device and method. Background technique [0002] With the rapid development of transportation in recent years, the requirements for smoothness and durability of various road surfaces are also getting higher and higher. The pavement of the road is generally a layered structure that is paved on the road subgrade by road construction materials and directly bears the load. Whether it is used for ballastless track pavement for high-speed railways or road pavement for general roads, there should be sufficient Excellent strength and good stability to meet the requirements of smoothness, compactness and anti-slip. [0003] Usually, before the pavement is laid, it is necessary to test the interface properties between the structural layers that make up the pavement, such as the friction coefficient between the structural layers, so as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00
CPCG01N13/00
Inventor 叶阳升蔡德钩包黎明杨国涛韩自力张千里陈锋楼梁伟闫宏业姚建平董亮李泰灃石越峰刘景宇张新冈
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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