Abstract
In the dynamic analyses of bridges, the foundations are generally modeled by the sway-rocking spring elements. The constant values of the damping factors are assumed without considering the difference of foundation types and soil conditions. However, The values of the damping factors vary depending on the foundation types and soil conditions. The reasonable method to determine the value of the damping factors is required.
In this research, numerical analyses simulating foundation vibration by 3-D FEM and SR model methods are performed to compare the real bridges vibration and to identify the damping factors of various types of foundations.
