Designing RC Frame Buildings for Seismic Performance: A Performance-Based Approach
Keywords:
Performance-based design, Seismic performance, RC frame buildings, Nonlinear analysis, Damage assessment.Abstract
This study presents a comprehensive performance-based seismic design and evaluation of reinforced concrete (RC) frame buildings. The research implements advanced analytical procedures to assess the seismic performance of RC frames designed according to performance-based engineering principles. Multiple performance levels were evaluated through nonlinear time history analysis using a suite of ground motions with varying intensities. A prototype 10-story RC frame building was designed following current code provisions and then redesigned using performance-based methodologies. The seismic behavior was characterized through interstory drift ratios, plastic hinge formation patterns, and global damage indices. Results demonstrate that performance-based designed structures exhibited 22% lower maximum interstory drift ratios and 35% improved damage distribution compared to code-compliant designs under design-level earthquakes. The proposed methodology achieved significant improvements in controlling damage distribution and reducing repair costs with only a marginal 7% increase in initial construction costs. This research contributes to the advancement of earthquake-resistant design methodologies for RC frame buildings by providing quantitative evidence of performance enhancements and practical design recommendations for practicing engineers.
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References
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