SIMULATION METHOD FOR SEISMIC DAMAGE AND RESTORATION OF LARGE-SCALE LIFELINE NETWORK

Abstract

 A simulation method for damage and restoration process of large-scale lifeline network has been proposed incorporating time required for restoration of damaged links explicitly. First, restoration time conditioned by the occurrence of link damage is formulated on the basis of damage rate and restoration time given for each link component. Restoration time of a link is then simulated taking account of associated uncertainty. Illustrative examples are shown for Osaki and Sennan-Senen water transmission networks in Miyagi Prefecture that were severely damaged in the Great East Japan Earthquake Disaster, 2011. The results of reliability analysis and simulated restoration processes are in good agreement with the actual damage and restoration process. Moreover, potential restoration patterns under the similar condition are demonstrated.