Journal of Earthquake Engineering
J. C. OBANDO, 1 and D. LOPEZ-GARCIA, 1,2
1 Department of Structural and Geotechnical Engineering, Pontificia Universidad Catolica de Chile, Santiago, Chile
2 National Research Center for Integrated Natural Disaster Management CONICYT FONDAP, Santiago, Chile
This paper describes a study on the characterization of the Inelastic Displacement Ratios (IDRs) of inelastic acceleration-sensitive nonstructural components subjected to floor accelerations obtained from the linear analysis of multistory building structures under far-field ground accelerations. Several building models having different structural systems and a number of stories were considered. IDRs were obtained from the displacement response of elastic and inelastic single-degree-of-freedom systems subjected to floor accelerations. Similarities and differences between floor acceleration IDRs and ground acceleration IDRs were identified, and efforts were made to explain the differences. Finally, a predicting equation for floor acceleration IDRs is proposed and validated.