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A Comprehensive Risk Analysis of Transportation Networks Affected by Rainfall‐Induced Multihazards
Author(s) -
Liu Kai,
Wang Ming,
Cao Yinxue,
Zhu Weihua,
Wu Jinshan,
Yan Xiaoyong
Publication year - 2018
Publication title -
risk analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.972
H-Index - 130
eISSN - 1539-6924
pISSN - 0272-4332
DOI - 10.1111/risa.12968
Subject(s) - natural hazard , risk analysis (engineering) , identification (biology) , criticality , risk assessment , component (thermodynamics) , computer science , transportation infrastructure , transport engineering , business , engineering , computer security , geography , botany , physics , meteorology , nuclear physics , biology , thermodynamics
Climate change and its projected natural hazards have an adverse impact on the functionality and operation of transportation infrastructure systems. This study presents a comprehensive framework to analyze the risk to transportation infrastructure networks that are affected by natural hazards. The proposed risk analysis method considers both the failure probability of infrastructure components and the expected infrastructure network efficiency and capacity loss due to component failure. This comprehensive approach facilitates the identification of high‐risk network links in terms of not only their susceptibility to natural hazards but also their overall impact on the network. The Chinese national rail system and its exposure to rainfall‐related multihazards are used as a case study. The importance of various links is comprehensively assessed from the perspectives of topological, efficiency, and capacity criticality. Risk maps of the national railway system are generated, which can guide decisive action regarding investments in preventative and adaptive measures to reduce risk.