Probabilistic and Mechanistic Approaches for Pavement Analysis

The pavement material properties have the variability during the construction process. and this realistic situation should be considered in the pavement analysis. In this study, the stochastic finite element is developed to investigate the effect of？ design parameters variability to pavement structural and performance analysis, and the mean and variance of pavement distress are computed. In order to verify the proposed method, the LTPP database developed by FHWA in the United State is used. The statistical parameters of material properties are backcalculated from FWD test data, and the LTPP database developed by FHWA in the United State were used to find the statistical parameters of pavement. Then, the average and the variance of the response parameters such as displacements and stresses are computed, and the statistical parameters of pavement distress under traffic loading are also calculated.