Abstract
The dynamic characteristics of soil-structure interaction (SSI) in irregularly layered soil are investigated to clarify their effect on the response of embedded structure. Impedance functions and foundation input motions as well as the response of a building embedded in a cylindrical sedimentary basin are calculated using axisymmetric hyperelements, considering the rigidity of the structure's footing, which enhances computational efficiency especially in large-scale soil models. Evaluation of the foundation input motion in irregularly layered soil is found to be essential to assessing the structural response characteristics. Results of response analyses suggest that surface waves induced at the edge of the basin may impinge on the embedded structure and amplify its response.
