Seismic performance analysis of lifeline systems

Abstract

Seismic risk assessment of lifelines is considerably more complicated than that of a single structure on account of the geographical spread of lifelines. Lifeline risk assessment requires knowledge about ground-motion intensities at multiple sites. This study considers the seismic performance analysis of lifeline network systems. Seismic damage estimates of the potable water and electric power networks of the Bam city will be calculated for the expected earthquake scenario and the results will be utilized to assess the performances of the topological models of the networks. The study will first include collection of lifeline utility network data in GIS format. Seismic damage analysis will be made by defining fragilities of the network components and the ground motions generated by the scenario earthquake. The damage estimates will be utilized in the post-seismic state of the networks for disaster management countermeasures and activities. © 2011 WIT Press.