Asphalt pavement evenness deterioration analysis based on the vehicle pavement interaction
LI Qian1，LIU Junqing2
1. School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;
2. School of Science, Xi’an University of Architecture and Technology, Xi’an 710055, China
Abstract：In order to figure out the asphalt pavement evenness deterioration mechanism, an evenness deterioration model considering the vehiclepavement interaction was established based on the Shell’s permanent deformation theory.Then a complete Matlab program was developed to solve the equations. The permanent deformation of a test road was calculated after opening to traffic for one year, and the result was compared with the measured value. The error is only 9.7%, which verifies the reliability of the proposed model. The mechanism of the asphalt pavement evenness deterioration and the influencing factors of the deterioration were analyzed based on the model. The results show that the random dynamic loading by vehicles causes the difference of the accumulation rate of the pavement permanent deformation along the longitudinal direction. With the increase of the times of axle loading, the difference increases, which will lead to the pavement evenness deterioration. The deterioration in turn will aggravate the dynamic loading, thus forming a vicious circle. The pavement evenness deteriorates nonlinearly with the increase of axle loading times. The smaller the vehicle speed and the bigger the axle load, the faster the pavement evenness detorioration with time, which means more unfavorable to the pavement.
李倩1，刘俊卿2. 基于车-路相互作用的沥青路面平整度劣化研究[J]. 振动与冲击, 2018, 37(6): 76-81.
LI Qian1，LIU Junqing2. Asphalt pavement evenness deterioration analysis based on the vehicle pavement interaction. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(6): 76-81.
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