Seismic analysis and evaluation of safety and resilience of the lifeline networks during the earthquake sequence

Abstract

The vulnerability analysis of structure and infrastructure damages is an essential step to estimate the possible effects of an earthquake to decrease the loss of key system factors. This study was conducted aiming to shine light on seismic analysis and performance evaluation of lifeline networks during earthquake sequences with insight into resilience. Probability Seismic Hazard Analysis (PSHA) was used to analyze seismic hazard; and EZ-Frisk application was used to analyze seismic hazard, spectral matching modeling, and site response. ZMAP software was used to detect and locate future earthquakes, considering local seismic tectonic conditions. To detect the resilience level of the lifeline networks, key point localization and geospatial mapping were performed using GIS software. Maximum displacement in this study was estimated to be approximately 68 cm. The distribution of these values ​​resembles the acceleration of the earthquake. In the part concerning seismic studies, the location of future earthquakes for the next event was also proposed for two other areas. The highest level of sensitivity and vulnerability was located in the center and toward the northeastern part of the study area. The results of this study suggested that a particular attention should be paid to vulnerable high-risk points and the demands should move towards safe structures and infrastructures in assigned areas.