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Issue:
Numerical Analysis on Fire Induced Structure Failure of Gymnasium
Author(s):
ZHAO Qiancheng
,
CHEN Yongqiang
,
LIU Yi
,
YUAN Mingwu
Pages:
854
-
862
Year:
2008
Issue:
6
Journal:
Journal of Basic Science and Engineering
Keyword:
钢结构
;
火灾
;
结构破坏
;
有限元法
;
Abstract:
本文采用数值方法对某大型体育馆的特定火灾场景进行模拟计算,对由于火灾导致的温度分布和结构破坏过程进行数值模拟.分析结果表明体育馆在火灾下随着温度上升,材料的弹性模量降低,结构刚度变小,顶部首先发生大变形,同时强度的降低和支撑能力削弱导致结构在重力等恒载作用下迅速发生破坏.破坏形式为屋顶钢网架在高温下发生大变形导致屋顶的整体塌落.这一结果对体育馆的消防设计和火灾应急安全具有重要的指导意义.
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