ABSTRACT
ABSTRACT: Structures subjected to violent ground shaking may be left in a displaced condition. This residual or permanent displacement may render the structures unsafe or irreparable. This paper presents the results of a parametric study aimed to construct the constant-ductility Residual Displacement Ratio (RDR) response spectrum of bilinear SingleDegree-of-Freedom (SDOF) systems subjected to strong earthquake ground motions. The RDRs, which are defined as the ratios between the residual displacement and the yield displacement, were computed using nonlinear time history analyses of bilinear SDOF systems subjected to 100 scaled ground motions. The results were statistically organized to establish the constant-ductility RDR response spectrum.
