| 方钢管混凝土柱-钢梁平面框架耐火性能研究 |
| |
| 引用本文： | 王广勇,刘广伟,刘晓阳.方钢管混凝土柱-钢梁平面框架耐火性能研究[J].防灾减灾工程学报,2012(Z1):40-44. |
| |
| 作者姓名： | 王广勇 刘广伟 刘晓阳 |
| |
| 作者单位： | 中国建筑科学研究院防火研究所;平阴县水务局;北京工业大学 |
| |
| 基金项目： | 中国建筑科学研究院自筹资金项目(20110106330730001);国家科技支撑计划课题(2008BAJ08B014)资助 |
| |
| 摘 要： | 建立了局部火灾下多层多跨矩形钢管混凝土柱-钢梁平面框架温度场和力学性能分析的有限元模型。在考虑楼板影响的基础上,研究了保护层厚度不同时钢管混凝土框架结构的温度场分布规律。研究了不同受火工况条件下钢管混凝土框架结构的变形和破坏规律、耐火极限状态、受火梁的内力状态以及结构耐火极限的规律。分析表明,梁保护层厚度影响钢梁温度分布形式;火灾下,框架结构发生了受火梁的整体屈曲破坏。
|
| 关 键 词： | 钢管混凝土 框架结构 耐火极限 有限元模型 |
Fire Performance of Square Concrete-filled Steel Tube Plane Frames |
| |
| WANG Guang-yong,LIU Guang-wei,LIU Xiao-yang.Fire Performance of Square Concrete-filled Steel Tube Plane Frames[J].Journal of Disaster Prevent and Mitigation Eng,2012(Z1):40-44. |
| |
| Authors: | WANG Guang-yong LIU Guang-wei LIU Xiao-yang |
| |
| Affiliation: | 1.Institute of Building Fire Research,China Academy of Building Research,Beijing 100013,China;2.Water Affairs Bureau of Pingyin County in Shandong Provice,Pingyin 250400,China;3.Beijing University of Technology,Beijing 100124,China) |
| |
| Abstract: | A finite element model(FEM) for calculating the temperature field and mechanical behavior of concrete-filled steel tube(CFST) plane frames under local fire is presented in this paper.Temperature distribution under different fire protection cover thickness is studied considering the influence of floor slab.Then,the deformation and failure mechanism,ultimate state,internal force state and the fire resistance of the CFST plane frames in fire is discussed by using the FEM.The results show that the temperature distribution mode of the heated beams is mainly controlled by the fire protection cover thickness,and the frame failure in fire is induced by the global buckling of the steel beams. |
| |
| Keywords: | concrete-filled steel tube(CFST) frame structure fire resistance finite element model(FEM) |
| 本文献已被 CNKI 等数据库收录！ |
