地震次生火灾中城市地铁地下结构的灾变性能研究

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Abstract Earthquakes and earthquake-induced fires, which have engulfed numerous lives and property many times in history, are significant disasters severely threatening human society.Nowadays underground structures usually constitute an important part in infrastructures in large-scale cities.These structures, once damaged in earthquake or earthquake-induced fire, will cause immense social and economic loss and will make post-earthquake repair extremely difficult.As seismic and fire resistance studies of underground structures are latecomers, it has become quite urgent to study the function change of such structures.In the paper, a 3D nonlinear FE simulation was performed, combining with the dynamic historical analysis, heat transfer analysis and thermal analysis.Deformation, damage and internal force evolution of a typical subway station structure under earthquake and earthquake-induced fire were studied.The impact of earthquake damage on the fire resistance performance of the structure was discussed.The conclusions here may shed some light on the seismic and fire resistance design of subway underground structures.

Key words： underground structure subway station earthquake earthquake-induced fire finite element analysis

Received: 22 October 2020 Published: 28 July 2021

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	LI Wenting
	CHEN Qingjun

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LI Wenting,CHEN Qingjun. Damage performance of underground structures in earthquake-induced fire[J]. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(14): 153-161.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2021/V40/I14/153

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