Preliminary assessment of seismic vulnerability of lifelines with a focus on bridges

Topkara, Naz
Sarıca, Gizem Mestav
Caner, Alp
Askan Gündoğan, Ayşegül
The seismic performance of individual bridges have always been studied in detail but not usually considered as a group of bridges that can form the weakest link in a lifeline. The analytical methods used in bridge seismic design have been well established in the specifications developed over the last twenty years. Seismic performance of bridges is typically assessed for a certain design return period of an earthquake with certain peak ground acceleration. In some cases, bridge seismic fragility curves are used not only to assess the individual bridge performances but also to assess the performance of network. In any case, the seismic performance of the bridges is not much related to the magnitude of earthquakes. This study focuses on preliminary assessment of seismic vulnerability of bridges on a highway network subjected to earthquakes with different magnitudes. In this scope, a simple guideline is established to determine the seismic vulnerability of a highway network. For a three bridge network, a numerical illustration has been performed under different magnitudes of earthquakes.
New York City Bridge Conference, ( 24 - 25 Ağustos 2015)


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Citation Formats
N. Topkara, G. M. Sarıca, A. Caner, and A. Askan Gündoğan, “Preliminary assessment of seismic vulnerability of lifelines with a focus on bridges,” presented at the New York City Bridge Conference, ( 24 - 25 Ağustos 2015), 2015, Accessed: 00, 2021. [Online]. Available: