As an alternative to code-based design, PBEE probabilistic assessment framework can be used to provide design solutions that meet the performance objectives set by decision makers with the goal of limiting earthquake damage. The cumbersome component of the PBEE framework is nonlinear response history analysis of a building under an extensive set of ground motions. To increase the efficiency when conducting performance-based seismic design FEMA P-58 provides a simplified analysis procedure for predicting median response and dispersion using linear static analysis and the yield strength of the structure. While the simplified analysis procedure may be limited in its ability to estimate nonlinear response and may entail greater uncertainty as to the true value of medians and dispersions of calculated demands, it could be effectively used in the preliminary phases of performance-based design.
This study provides simplified analysis response models for buildings that utilize either special concentrically braced frame or buckling restrained braced frame as a lateral load-resisting system for a portfolio of buildings ranging from low-rise to high-rise. The presented models are developed in accordance with the FEMA P-58 simplified response analysis procedures to provide estimates of median nonlinear inter-story drifts, peak (total) floor velocities, and peak (total) floor accelerations along the building height. In addition, the study proposes new methodology for the development of the simplified response prediction models that is based on grouping the data of different building archetypes based on their dynamic properties and behavior. The new methodology greatly improves prediction of nonlinear structural behavior based on simple linear elastic analysis.
|Commitee:||Calabrese, Andrea, Rahmani, Mehran|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 58/05M(E), Masters Abstracts International|
|Subjects:||Engineering, Civil engineering|
|Keywords:||BRBF, FEMA P-58, Non-linear response, Performance based design, Response models, SCBF|
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