Abstract
Very severe damages and disasters have been suffered from the Hyogo-ken Nanbu earthquake of January 17, 1995, and been encouraged to re-examine the earthquake proof design method on all the civil engineering structure. Taking into account for the complicated circumstances on the structure situations such as the soil conditions and the nonlinear response characteristic, it is very important to clarify these effects on the seismic response evaluations in order to enhance the safety and performance of the structure. In the present study, for the continuous pier-girder system with soil-foundations, the seismic performance evaluation is examined using the results from the nonlinear seismic response. It is shown that in order to carry out the reliable evaluations on the structure performance after severe earthquake, it is essential to clarify the structure damages by means of the seismic evaluations on multi-degrees-of-freedom system with dynamic soil-structure interaction.
