抄録
It is supposed that aftershocks and foreshocks have significant effects on the seismic performance evaluation of structure. Since the damage of structure may be closely related to the earthquake input energy, it is necessary to carry out the accumulated damage assessment by means of the energy evaluation. For the reliable design of a structure, it is very important to clarify influences of accumulated damages on the nonlinear response situation due to earthquake. In this present study, by applying the target performance due to demand strength spectra with the damage index by Park and Ang, it is examined with cumulative damages which are given by aftershocks and foreshocks for the earthquake performance evaluation of the structure. It is shown that seismic performance evaluation is closely related to accumulative damage estimation due to aftershocks and foreshocks.
