Performance Validation of Equivalent Shear Beam Model Container for Dynamic Centrifuge Tests

抄録

Dynamic centrifuge experiments using equivalent shear beam (ESB) model containers are widely utilized in geotechnical earthquake engineering to quantitatively assess the responses of soils or soil-structure systems subjected to seismic loads. This study presents the dynamic centrifuge test results on the boundary effect in an ESB model container in the KAIST Geo-Centrifuge Center. Two dynamic centrifuge tests, one with the empty container and the other with the container filled with dry sand, were conducted to identify the natural frequency of the container and to compare the responses at different horizontal locations and depths within the container. The results evaluated that the response at a location 13 cm horizontally distant from the wall still showed a minimal boundary effect. Moreover, the response spectrum results from 1D equivalent linear analysis using DEEPSOIL agreed well with the acquired from the tested container. The presented results validate the use of the ESB container for dynamic centrifuge tests with a minimal boundary effect.