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Inter-story Drift Design Method to Improve the Seismic Performance for Steel Moment Frames  

Choi, Se-Woon (연세대학교 건축공학과)
Park, Hyo-Seon (연세대학교 건축공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.24, no.6, 2011 , pp. 707-714 More about this Journal
Abstract
The inter-story drift ratio is used to evaluate the damage of buildings by the earthquake. This is known that as the inter-story drift ratio decreases, the seismic damage decreases. Although to reduce the inter-story drift ratio is the important issue in the seismic design, no practical inter-story drift design method has bean developed. This study presents an optimal inter-story drift design method to improve the seismic performance of the steel moment frames using the resizing algorithm. The objective function of the proposed method is to minimize the differences of the inter-story drift ratios so that the inter-story drift ratios of the building could be distributed evenly and be reduced. Because this method redesigns the sectional properties of structural members base on the displacement participation factor calculated by the unit-load method, this can improve the seismic performance of the structure without the iterative structural analysis. The efficiency of this algorithm was demonstrated by the application to steel moment frames.
Keywords
inter-story drift ratio; seismic performance; resizing algorithm; displacement participation factor;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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