In this study

the large-scale finite element software——ANSYS/LSDYNA

and its parallel computing function were used to analyze the earthquake response of a large-span cable-stayed bridge with soil-structure interaction.Meanwhile

the material nonlinearity of concrete

soils and cables was considered in the finite element analysis.The results are as following: First

internal forces are less in the case of material nonlinearity than those in the pure flexible study

which is due to energy dissipation at plastic stage;second

the displacement was larger in the case of material nonlinearity than those in the pure flexible study

that is because stiffness reduction at plastic stage.