Study on Asphalt Pavement Mechanical Model Based on Calibration of Measurement

The data of temperature and strain of asphalt pavement were measured.Based on comparing the calculated strains and pavement mechanical models,the pavement mechanical model and parameters which can agree with the actual pavement more closely was studied.Furthermore,the interface continuity conditions of different types of pavement and the amendment method of calculated pavement mechanical parameters was studied.It is found that(1) multi-layer elastic model using dynamic modulus is the better choice for pavement mechanical analysis;(2) as for the layers interface continuity condition,flexible pavement and combined base pavement are continuous,however semi-rigid base pavement is semi-continuous with friction coefficient of 0.65~0.75.The amendment method of calculated pavement mechanical parameters was proposed,and the correlation coefficient between the measured and the calculated values is about 0.9 accordingly.