RESEARCH ON THE BEHAVIOR OF COMPOSITE FRAME WITH CFST COLUMNS AND COMPOSITE BEAM AFTER EXPOSURE TO FIRE

摘要：

A 3-D finite element model (FEM) is developed herein to simulate the post-fire behavior of composite frames with CFST columns and steel beam with reinforced concrete slab. The finite element program ABAQUS was adopted for the analysis. Also accurate thermal and material model,element type and solution method were assumed. The FEM was verified valid by contrasting with some experimental results. Meanwhile,parametric analysis was performed to investigate the influence to the load to displacement relationships of CFST composite frames after exposure to fire. The strength of steel tubes,the concrete strength of columns,the steel ratio of columns,and the axial load ratio were considered as parameters. The result can improve the theory of CFST fire resistance.

关键词： Concrete-filled steel tubular (CFST) columns Steel-concrete composite frame Post-fire behavior Finite element model (FEM) Mechanical behavior

作者: Peng-Peng Zhang Wen-Da Wang Jing-Xuan Wang

作者单位: College of Civil Engineering,Lanzhou University of Technology, Lanzhou 730050,P.R. China College of Civil Engineering, Lanzhou University of Technology,Lanzhou 730050,P.R. China College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 2235-2240

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）