Abstract
In this paper, seismic response characteristics of high ductile structures with embedded foundation surrounding soil ground are evaluated. First, transfer functions of embedded foundation considering the time delay components are proposed based on Dynamic Ground Compliance and Novak method. Next, seismic responses of equivalent single degree of freedom systems using proposed transfer function are calculated by the difference of the first natural period and the ductile level of upper structure. Response measurement focuses on the story shear force, the displacement, the energy absorption by hysteretic for upper structures and radiation damping for soil ground. As a result, it is clarified that the tendency to the embedded depth in the characteristics of each response. The effects of the radiation damping are confirmed in the high ductile structures as well as usual structures, especially, the phenomena are effective when the small displacement amplitude on time history response analysis.
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