An Engineering Solution to Improve Post-Earthquake Fire Resistance in Important Reinforced Concrete Structures

作者：Behnam Behrouz^*; Ronagh Hamid

来源：Advances in Structural Engineering, 2014, 17(7): 993-1009.

DOI：10.1260/1369-4332.17.7.993

• post-earthquake fire
• sequential analysis
• fire resistance
• reinforced concrete structures
• performance based design
• important structures
• immediate occupancy

An investigation based on sequential analysis is performed here on the Immediate Occupancy performance level of important structures designed to the ACT 318-08 code after they are subjected to earthquake level with PGA of 0.30 g. This is followed by a fire analysis of the damaged structure, from which the time it takes for the damaged structure to collapse is calculated. As a benchmark, the fire analysis is also performed for the undamaged structure and before the occurrence of earthquake. The results indicate that the vulnerability of structures increases when a previously damaged structure is exposed to fire. A post-earthquake fire (PEF) factor as a function of the required fire resistance time is then proposed to improve the fire resistance of important buildings subjected to PEF. Whilst the investigation is for a certain class of structures (important building, intermediate reinforced structure, 5 stories) and the results can only be expected to be applicable to the cases investigated, it is hoped that it paves the way for further research into this important phenomenon.

• 出版日期2014-7