Nonlinear Static Procedure for Seismic Vulnerability Assessment of Bridges

The impact of a seismic event on performance of a highway transport network depends on the extent of damage sustained by its individual components, especially bridges. Seismic damageability of bridges expressed in the form of fragility curves can easily be incorporated into the scheme of risk analysis of a highway network under a seismic hazard. In this context, this paper focuses on a nonlinear static method of developing fragility curves for a typical type of concrete bridge in California. The method makes use of the capacity spectrum method for identification of spectral displacement, which is converted to rotations at bridge column ends. To check the reliability of this analytical procedure, developed fragility curves are compared with those obtained by nonlinear time history analysis. Results indicate that analytically developed fragility curves obtained from nonlinear static and time history analyses are consistent.


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  • Accession Number: 01049828
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 1 2007 1:36PM