Relative Performance Comparison and Loss Estimation of Seismically Isolated and Fixed-based Buildings Using PBEE Approach

摘要: Relative Performance Comparison and Loss Estimation of Seismically Isolated Fixed-based Buildings Using PBEE Approach by Prayag J. Sayani, Doctor Philosophy Utah State University, 2009 Major Professor: Dr. Keri L. Ryan Department: Civil Environmental Engineering Current design codes generally use an equivalent linear approach for preliminary a seismic isolation system. The is based on effective parameters, rather than physical parameters the system, may not accurately account nonlinearity second chapter evaluates alternative normalized strength characterization against characterization. Following considerations evaluation are included: (1) ability to effectively variations in ground motion intensity, (2) describe energy dissipation capacity (3) conducive developing equations that can be implemented within code framework. Although current guidelines specify different performance objectives fixed-base isolated buildings, future performance-based will allow user-selected objectives, motivating need consistent comparison two systems. Based response history analysis suite motions, constant ductility spectra generated buildings