The Behaviour of Pre-Damaged Reinforced Concrete Structural Systems in Fire

Abstract eng:
It is known that when severe earthquakes occur, major fires often follow in the damaged structures. In the post-earthquake scenario fires cannot be dealt with effectively and greatly weakened structures need to be able to sustain fire loads. For design of structures in seismic regions separate fire and earthquake codes are used and complied with. Each allows some structural damage to occur but aims to prevent collapse in case of a major event. The compound situation of a fire following an earthquake is almost never considered in the design process. This study investigates the behaviour of damaged structural systems subjected to fire loads. Results show that the response to fire loading of damaged components is significantly different from those that are not pre-damaged. Pre-damage not only alters the magnitude of the response quantities but also their profile (e.g. shift in the location of the maximum response).

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