Abstract
In the capacity spectrum method, i. e., force and displacement based seismic design method, demand spectrum ADRS (acceleration-displacement response spectrum) acts an very important role. In this study, therefore, the ADRS of SDOF systems with elastic-perfectly plastic bi-linear restoring force characteristics are obtained by inelastic response analyses, provided that the value of modified Park-Mg's damage index D of the system equals Dr (=0.4) which means the repairable limit of the SDOF systems. Regression equations of the ADRS are derived and are compared with the analytical ones. Then the regression equations are applied to a force and displacement based seismic design of a single RC pier. And the design result obtained by the proposed method is compared with the one obtained through the ultimate lateral strength method.
