Integrated Redundancy Assessment of Highway Bridge Network Systems Subjected to Emergencies
Zhenliang Liu , Chi Zhang , Xinru Ran , Hang Zhou , Kun Fang , Weigang Zhao
Earthquake Engineering and Resilience ›› 2025, Vol. 4 ›› Issue (1) : 61 -75.
Integrated Redundancy Assessment of Highway Bridge Network Systems Subjected to Emergencies
As arteries of transportation infrastructure, highway bridge networks (HBNs) are essential for normal residential and commercial activities yet are susceptible to natural or man-made disasters. Their redundancy during emergencies is crucial for effective disaster mitigation and management. To address that, this study explores the ability of HBNs to independently withstand and recover from emergency events. A system-level emergency response simulation method is proposed, integrating seismic hazard analysis, network configurations, traffic data, physical damage to regional bridges, and other factors while accounting for various sources of uncertainty. The potential increase in traffic demand and decrease in bridge capacity in emergency scenarios is also analyzed. Further, a set of comprehensive multi-criteria indicators is introduced to evaluate the redundancy of HBNs. The proposed methodologies are expected to provide a preliminary but effective improvement of resilience assessment for HBNs, facilitating the inspection and recovery processes.
emergency response / highway bridge network / seismic assessment / seismic redundancy / traffic analysis
2025 Tianjin University and John Wiley & Sons Australia, Ltd.
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