Building residual capacity evaluation for future seismic events using the capacity spectrum method

Methods to evaluate a building’s residual capacity to survive an aftershock which has the same intensity as the mainshock had been proposed in past studies. However, there have been several recent earthquake sequences where subsequent events were of greater intensity than the first event. Furthermore, structures with pre-existing damage from relatively smaller events may incur greater damage than nondamaged buildings during future events. In this study, a methodology to evaluate a building’s residual capacity to survive future events using the capacity spectrum method is proposed.