NEHRP Clearinghouse
- Title
- Performance-Based Design Paradigm.
- File
- PB2006111705.pdf
- Author(s)
- Astrella, M. J.; Whittaker, A. S.
- Source
- National Science Foundation, Washington, DC., December 15, 2005, 162 p.
- Identifying Number(s)
- MCEER-05-0011
- Abstract
- The principal investments in building construction are made in non-structural components and contents (NCCs). An efficient performance-based design paradigm should focus on these key investments and a new design paradigm is needed to do so. The impact of structural framing system type on the NCCs demands is illustrated through response-history analysis of two conventional hospital buildings located in Southern California, which represent typical 1960s-era and 1970s-era construction, and 10 models of alternate (retrofit) construction. Three bins of earthquake histories with different probabilities of exceedence are used for the response-history analysis. Three types of protective systems are considered in the study: steel yielding devices (buckling restrained braces), fluid viscous dampers and base-isolation. Six of the models are base-isolated with three types of isolators. The performance of the base-isolated frames is superior to that of the other frames as gauged by the smallest drift and acceleration demands on the NCCs. Of the non-isolated models, those equipped with fluid viscous dampers offer superior performance. No single type of isolator (of the three types considered) outperforms the other two isolator types across all 3 bins of earthquake histories.
- Keywords
- ; Seismic design; Buildings; Earthquake engineering; Performance; Structural analysis