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Computers and Concrete
  Volume 16, Number 5, November 2015 , pages 723-740

Seismic performance of skewed highway bridges using analytical fragility function methodology
M. Bayat and F. Daneshjoo

    In this study, the seismic performance of skewed highway bridges has been assessed by using fragility function methodology. Incremental Dynamic Analysis (IDA) has been used to prepare complete information about the different damage states of a 30 degree skewed highway bridge. A three dimensional model of a skewed highway bridge is presented and incremental dynamic analysis has been applied. The details of the full nonlinear procedures have also been presented. Different spectral intensity measures are studied and the effects of the period on the fragility curves are shown in different figures. The efficiency, practicality and proficiency of these different spectral intensity measures are compared. A suite of 20 earthquake ground motions are considered for nonlinear time history analysis. It has been shown that, considering different intensity measures (IM) leads us to overestimate or low estimate the damage probability which has been discussed completely.
Key Words
    nonlinear time history analysis; fragility function methodology; intensity measures
M. Bayat and F. Daneshjoo: Department of Civil and Environmental Engineering,Tarbiat Modares University, Tehran, Iran

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