Fragility Curves for Wide-Flange Steel Columns and Implications for Building-Specific Earthquake-Induced Loss Assessment

• DOI: 10.1193/122017eqs260m
• Publication Date: 2018-05-31T14:33:34Z
• Authors: Ahmed Elkady; Subash Ghimire; Dimitrios G. Lignos
• Keywords: Flange; Component (thermodynamics)

Building-specific loss assessment methodologies use component fragility curves to compute expected losses in the aftermath of earthquakes. Such are not available for steel columns assuming they remain elastic because capacity design considerations. Nonetheless, first-story moment-resisting frames (MRFs) experience damage through flexural yielding and formation geometric instabilities. This paper uses an experimental database that was recently assembled develop two sets univariate drift-based column consider influence loading history. Ordinal logistic regression is also employed multivariate capture parameters affect performance. The implications proposed building-specific demonstrated using eight-story office building with MRFs. It shown structural repair costs this case may increase by 10%, regardless seismic intensity, when considered. Similarly, contribution repairs annual double over building's life span.