- Soil-Structure Interaction Analysis Using Finite Element and Boundary Element Coupling
- Rhee, Jong-Woo ; Kim, Moon-Kyum ; Lim, Yun-Mook ;
- Journal of The Korean Society of Civil Engineers, volume 18, issue 1_3, 1998, Pages 323~323
Abstract
The coupling of finite elements and boundary elements, which can be used for the soilstructure interaction analysis in multi-layered half planes is developed. To handle the complicated geometry and various material properties. the near field involving the structures is modeled using conventional finite elements. The far field beyond the finite elements region is modeled using developed boundary elements, which satisfy the radiation condition of half planes with muli-layers. In general, the soil media is multi-layered, therefore, the multi-layered nature of the object effects the responses due to the reflected waves. The fundamental solutions for boundary element method which satisfy the reflection and transmission conditions of waves at each layer interface are developed in this study. It makes it possible to analyze the dynamic problems economically without any difficulties in multi-layered problem. The fundamental solutions are derived using the equations of motions in cylindrical coordinates for easy applications to not only two dimensional but three dimensional problems. To validate the proposed method, responses of an infinite rigid strip footing on a multi-layered system is presented. Some numerical examples of structures are given to show the efficiency of proposed method and to demonstrate the dynamic behavior of each structures with various properties.