Sensitivity Analysis of the Dynamical Parameters on Road Materials

In this paper, on the basis of the dynamic triaxial test achievements of road base materials, the elastic-plastic constitutive model is constructed with the finite element software of ABAQUS to design computing model and analyze the results of numerical simulation, the sensitivity of road base materials mechanics parameters influential factor is studied. The calculated curves of the dynamical deformation behavior of silty clay are agreed with the measured ones. The effect of parameters such as cyclic load's magnitude, confining pressure, cyclic stress ratio, frequency, the number of cyclic load and load wave is contrasted. It is found that confining pressure is the primary influential factors to the sensitivity of dynamical parameters. At the same time, it shows that the Finite Element Method(FEM) is valid to analyze the characters of mechanical parameters.