火灾荷载作用下小空间钢结构性能化数据分析  

Data Analysis on Performance of Small Spatial Steel Structure under Fire Disaster Load

作　　者：张立影[1] 苏经宇[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124

出　　处：《建筑科学》2008年第11期46-48,共3页Building Science

摘　　要：针对钢结构在火灾时易发生局部破坏或整体倒塌的特点,首先利用FDS对特定场景进行温度场数据模拟,并对模拟的环境温度数据进行拟合,然后把拟合后的温度—时间函数以边界条件的形式导入ANSYS中,在此基础上计算分析钢框架在火灾荷载和常规荷载作用下结构的内力和位移的变化情况。进而用来指导如何进行钢结构的防火保护或加固措施。According to the characteristics of partial damage or whole collapse of the steel structure under fire disaster load, firstly, specific temperature field data should be simulated by using FDS and fitting them. Secondly, the fitted temperature-time function is reloaded into ANSYS in the form of boundary conditions. Thirdly, the change situation of the structural internal forces and displacements of the steel frame can be calculated and analyzed under the fire disaster load and the normal circumstance load. Finally, It can give instructions on fire protection or reinforcement measures for the steel structure.

关 键 词：钢结构 火荷载 火灾模拟 有限元分析 

分 类 号：TU391[建筑科学—结构工程] TU972.4