Performance-Based Seismic Design and Evaluation of Building Structures

Performance-based design (PBD) has emerged as the new paradigm in seismic engineering. The concept of PBD is not limited to the field of seismic design, though the material covered in this chapter focuses primarily on recent developments in earthquake engineering. Performance-based seismic engineering (PBSE) is still an evolving methodology; hence, the information presented in this chapter should not be 21.1 Some Issues in Current Seismic Design .... . . . . . . . . . . . 21-2 21.2 Introduction to PBSE ... . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-4 Elements of a Typical Performance-Based Methodology 21.3 Performance-Based Methodologies: Deterministic Approach .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-9 Classifying Performance Levels Defining Performance Objectives Design Response Spectra and Ground Motions Ground Motions 21.4 Evaluating Seismic Demands .... . . . . . . . . . . . . . . . . . . . . . . . . . 21-13 Modeling Guidelines Methods of Analysis 21.5 Assessing Performance: The Development of Acceptance Criteria .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-20 Linear Procedures Nonlinear Procedures ATC-40 and Capacity Spectrum Procedures 21.6 Performance-Based Methodologies: Probabilistic Approaches .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-27 The SAC-FEMA Project and FEMA-350 Simplified Evaluation Method (FEMA-350) Incremental Dynamic Analysis The PEER PBD Methodology 21.7 PBD Application: An Illustrative Example .. . .. . . . . . . . 21-33 Performance Objective PBD and Assessment Notes and Observations 21.8 Concluding Remarks ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-49 Appendix A ... .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-50 Conceptual Basis of Pushover Analysis and CSM Acknowledgments .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-53 References .. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-53 interpreted as an existing design specification or an adopted standard. Rather, the contents of this chapter should be viewed as an introduction to an emerging concept for seismic design of building systems.