ABSTRACT
Multi-hazard events involving bridge structures are more often nowadays as a consequence to man-made events and climate change. This study provides an overview of recent development in the field of multi-hazard analysis for bridge structures. Following that, it focuses on the structural behavior of a structure of strategic importance (a highway viaduct), under different hazard scenarios. Among the scenarios considered is the impact of a heavy vehicle (tank truck) on a bridge pier, and the fire spread following the collision due to the presence of inflammable material. The bridge structure is a typical multi-span composite highway viaduct. Different impact and fire scenarios are considered, including fire involving different parts of the bride (i.e. piers, deck). The outcomes of the analyses are evaluated and considerations are made for possible prevention actions.
