期刊文献+

火灾作用下体育场馆结构破坏数值分析 被引量:2

Numerical Analysis on Fire Induced Structure Failure of Gymnasium
下载PDF
导出
摘要 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. Numerical simulations of fire disaster in a specific gymnasium were performed and the temperature distribution and the structure failure process induced by fire were investigated. The results showed that the elastic modulus of steel material dropped quickly with the increasing of temperature caused by fire. This would lead to the weakening of the stiffness of the structure. Large deformations of steel structure develop first at the coping, and then the structure failure occurs rapidly under the gravity loading after the reduction of strength and the losing of supporting resistance. The final failure pattern of the structure was the global collapse of the steel grid roof by the large deformation due to the fire induced high temperature. These research results may provide important message for the fire control design and emergency response of gymnasiums.
出处 《应用基础与工程科学学报》 EI CSCD 2008年第6期854-862,共9页 Journal of Basic Science and Engineering
基金 国家自然科学基金(10602002)资助
关键词 钢结构 火灾 结构破坏 有限元法 steel structure fire disaster structure failure finite element method
  • 相关文献

参考文献5

二级参考文献12

  • 1H K Versteeg&W Malalasekera. An introduction to computational Fluid Dynamics [M]. 1996.
  • 2霍然 袁宏永.性能化建筑防火分忻与没计[M].合肥:安徽科学技术出版社,2003..
  • 3Fire safety engineering in buildings[M]. DD240, British Standards Institute, London, 1997.
  • 4Y. P. He, Vaughan Beck. Smoke Spread Experiment in a Mutil-storey Building and Computer Modelling[J].Fire Safety Journal, 1997,28:139.
  • 5D Veynante and L Vervisch. Turbulent combustionmodeling[J]. Progress in Energy and Combustion Science, 2002,28 - 193.
  • 6H. Y. Wang, NL Coutin, J. IVL Most. Large-eddy-simulation of buoyancy-driven fire propagation behind a pyrolysis zone along a vertical wall [J]. Fire Safety Journal, 2002, 37: 259-285.
  • 7DGJ08-88—2000.民用建筑防排烟技术规程[S].[S].,..
  • 8GB 50009-2001.建筑结构载荷规范[S],2002.
  • 9王冬,王爱平,周冬林.从大型体育场馆的建筑特点探讨其火灾危险性及防范对策[J].消防技术与产品信息,2003,16(11):7-8. 被引量:11
  • 10刘永军,姚斌,陈长坤,范维澄.性能化结构抗火设计的若干关键问题[J].消防科学与技术,2003,22(6):473-476. 被引量:24

共引文献126

同被引文献10

引证文献2

二级引证文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部