EFFECTS OF RESIDUAL STRESSES ON FLEXURAL BUCKLING BEHAVIOR OF STEEL COLUMNS FIRE

摘要：

The paper presents the effects of residual stresses on the flexural buckling behaviour of steel columns in fire situations. The flexural buckling curves of EC3 Part 1.2 and that of CECS200 for fire resistance design of steel columns are compared. The effect of residual stresses is incorporated in the buckling curves of CECS200, however, the EC3 Part 1.2 intends to ignore its affections. Based on the distribution of residual stresses, CECS200 gives four buckling curves which are all greater than the single curve in EC3 Part 1.2. A steel column with a triangular residual stress distribution is analyzed using finite element method (FEM) and the results are compared with that of CECS200. The flexural buckling curves given by CECS200 differ little at different temperatures. FEM results show that the buckling curves decrease with the elevating of temperatures.

关键词： Residual stress buckling curve critical stress steelcolumn fire temperature

作者: P. J. Wang G. Q. Li

作者单位: College of Civil Engineering, Tongji University, Shanghai, China

会议类型: 国际会议

会议名称: 2007年土木工程结构创新与可持续发展国际会议(The International Symposium on Innovation & Sustainability of Structures in Civil Engineering)

会议地点: 上海

会议语种:英文

页码: 84-91

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）