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http://dx.doi.org/10.5000/EESK.2003.7.5.075

Developing Fragility Curves for Concrete Bridges Retrofitted with Steel Jacketing  

Kim, Sang-Hoon ((주)대우건설 토목기술팀)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.7, no.5, 2003 , pp. 75-83 More about this Journal
Abstract
The ultimate goal of this research is to improve highway system performance in earthquakes by evaluating the effectiveness of retrofitting bridges with column jacketing. The objective of the study is to determine if steel jacketing increases the ductility capacity of bridge columns and hence improves the fragility characteristics of the bridge. Analytical fragility curves are used to adjust the empirical fragility curves obtained for the unretrofitted bridges using seismic damage data collected following past earthquakes. The adjustment was carried out by increasing the median values of the empirical curves through comparison with the median values of the corresponding fragility curves obtained analytically, both before and after being retrofit.
Keywords
Steel Jacket; fragility curve; steel jacket; retrofit; ductility factor; nonlinear dynamic analysis;
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