Multi-Dimensional Fragility of Structures: Formulation and Evaluation

This study investigates the sensitivity of fragility curves when uncertainties in limit states are considered. Using the MCEER west coast demonstration hospital in the San Fernando Valley in Southern California, influence of structural and response parameters, such as stiffness, acceleration and displacement thresholds, input ground motion, and uncertainties due to structural modeling, are investigated. Different structural parameters that drastically affect fragility are considered. A generalized formula for multidimensional threshold limit states is proposed, and various cases are considered to illustrate the formulation. References, illustrations and tables are included

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