Reliability based seismic fragility analysis of bridge

M. Kia, M. Bayat, A. Emadi, S. Soleimani Kutanaei and H.R Ahmadi

Abstract

In this paper, a reliability-based approach has been implemented to develop seismic analytical fragility curves of highway bridges. A typical bridge class of the Central and South-eastern United States (CSUS) region was selected. Detailed finite element modelling is presented and Incremental Dynamic Analysis (IDA) is used to capture the behavior of the bridge from linear to nonlinear behavior. Bayesian linear regression method is used to define the demand model. A reliability approach is implemented to generate the analytical fragility curves and the proposed approach is compared with the conventional fragility analysis procedure.

Key Words

aleatory uncertainty; epistemic uncertainty; fragility analysis; probabilistic demand model; reliability methods

Address

M. Kia: Department of Civil Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran M. Bayat: Department of Civil and Environmental Engineering, Univrsity of South Carolina, Columbia, SC, USA A. Emadi: Department of Civil Engineering, Pajoohesh Consulting Engineers, Tehran, Iran S. Soleimani Kutanaei: Department of Civil Engineering, Islamic Azad University, Ayatollah Amoli Branch, Amol, Iran H.R Ahmadi: Department of Civil Engineering, Faculty of Engineering, University of Maragheh, P.O. Box 55136-553, Maragheh, Iran

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