ABSTRACT
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.
