某建筑整体钢结构抗火响应特性的比较  

Comparative analysis on characteristics of fire-resistant based on overall steel structure of a building

作　　者：肖春花 姚浩伟[2] 周斌 

机构地区：[1]深圳市建筑设计研究总院有限公司,广东深圳518031 [2]郑州轻工业学院电气信息工程学院,河南郑州450002

出　　处：《消防科学与技术》2014年第11期1268-1271,共4页Fire Science and Technology

基　　金：郑州轻工业学院博士科研基金项目(2013BSJJ029);2014中国消防协会科学技术年会"青年消防学者论坛"交流论文

摘　　要：以某钢结构建筑为例,在分别采用CFD模拟真实火灾温升和ISO 834标准温升两种情况下,利用ABAQUS软件后处理二次开发程序进行基于整体的钢结构抗火承载力分析,用直观云图显示受火构件破坏位置。结果表明,火灾温升曲线不仅影响钢结构破坏的时间,而且影响初始破坏构件的位置。得出只有基于整体的钢结构抗火分析才能反映火灾下钢结构的内力重分布作用,且在钢结构抗火验算中应当采用最接近真实工况的温升曲线的结论。Taking a steel construction for example, the two cases that temperature rise of CFD simulation and ISO 834 standard one were used respectively. The fire resistance capacity analysis of overall steel structure has been carried using ABAQUS soft- ware secondary development program, with intuitive images showed destroyed position of the fire element. The result showed that the curve of temperature rise not only affected the steel destruction time, but also impacted the position of initial member damaged. The conclusions that just based on analysis of the overall fire resistance can reflect the action of internal force redistribution under fire, and the temperature curve clo- sest to the real conditions should be used in fire resistance anal- ysis have been obtained.

关 键 词：整体钢结构抗火 温升曲线 ADAQUS 承载力法 

分 类 号：X913.1[环境科学与工程—安全科学] TU391[建筑科学—结构工程]