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Asphalt concrete pavement stress-strain detecting method and system

An asphalt concrete, stress-strain technology, applied in the preparation of material inspection products and test samples, can solve the problems affecting the accuracy of measurement results and low survival rate, so as to increase the survival rate of instruments, improve detection accuracy and reduce the impact Effect

Inactive Publication Date: 2008-08-20
山东省交通科学研究所
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Problems solved by technology

Due to the uncertainty of construction factors, the sensors installed on the site have a low survival rate; at the same time, the accuracy of the measurement results will be affected due to the difference between the internal road surface and the expected results.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] The stress-strain detection system for asphalt concrete pavement consists of stress-strain sensors, thermal insulation protection cables and measuring instruments. The stress and strain sensor is connected with the measuring instrument through a temperature-insulated protection cable.

[0021] The specific detection method is:

[0022] a, make the stress-strain sensor: the basic structure of the sensor is the same as that of the stress-strain sensor in the prior art, but the modulus of elasticity of the selected base material is the same as the modulus of elasticity of the on-site mixture of the test road;

[0023] b. Making prefabricated blocks: place the stress-strain sensor described in step a in the rectangular test mold, then pour the mixed material taken from the test road site into the test mold, and accurately compact and form it under the situation of simulating the construction characteristics of the site , the finished prefabricated block can be obtained aft...

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PUM

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Abstract

The invention discloses a method for testing asphalt concrete pavement stress-strain and the special test system thereof, which belongs to the research field of asphalt concrete pavement structural performance, the characteristic of the invention resides in that: concrete precast block containing stress-strain sensor is buried in test pavement for collecting pavement response data. Compared with prior art, the invention asphalt concrete pavement stress-strain test method and the special test system thereof have advantages of high sensor survival rate, accuracy measurement and so on, which can be applied in the attenuation discipline test research of pavement structure and material property under the action of traffic and natural environment.

Description

technical field [0001] The invention relates to the field of structural performance research of asphalt concrete pavement, in particular to a method and system for detecting stress and strain of asphalt concrete pavement. Background technique [0002] The research on the attenuation law of pavement structure and material properties under the action of traffic and natural environment has always been a problem that the highway industry attaches great importance to. By selecting a well-designed test road in a typical road section in the physical project, embedding advanced sensor equipment in the test road, and conducting long-term performance observation (LTPP) on the test road section, the decay law of the structural performance of the highway asphalt pavement and the traffic load and natural environment are studied. The relationship between these factors can scientifically determine the reasonable asphalt pavement structure form of the expressway, and provide theoretical bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/42G01N1/28
Inventor 廖宝梁王林韦金城
Owner 山东省交通科学研究所
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