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By Sang-hoon Kim, Yuko Murachi, Swagata Banerjee, Sunbin Cho and Howard ChungMasanobu Shinozuka, Youwei Zhou, Sanghoon Kim, Yuko Murachi, Swagata Banerjee, Sunbin Cho and Howard Chung


research studied socio-economic effect of the seismic retrofit implemented on bridges in Los Angeles Area Freeway Network. Firstly, advanced FE (Finite Element) modeling and nonlinear time history analysis are carried out to evaluate the seismic performance in the form of fragility curve, of representative bridges before and after retrofit. This analysis resulted in the determination of retrofit effect in such a way that we can quantify, through the change in fragility parameters, the improvement of bridge seismic performance after retrofit. Secondly, an integrated traffic assignment model is introduced to consider change in the post-earthquake OD characteristics due to building damage, and is utilized to evaluate the postearthquake network performance of the damaged freeway network in terms of daily travel delay (compared with the trave

Year: 2005
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