STUDY ON UNSTIFFENED AND STIFFENED COLD-FORMED SHS AND RHS STUB COLUMNS

摘要：

Based on the test results of eighteen unstiffened cold-formed stub columns with square hollow section and rectangular hollow section,finite element models of these steel tubes with thickness of 8,10 and 12 mm were created. Compared with the experimental strength,the numerical strength and prediction strengths using the GB code and AS/NZS standard of these unstiffened columns were all smaller. Thus the prediction methods are all conservative and the AS/NZS standard is the most conservative. Meanwhile,finite element models of stiffened stub columns with the same contour dimensions as the unstiffened sections were also created. Four lipped angles and two lipped channels were used to form the stiffened sectional columns with two stiffeners and four stiffeners,respectively. Generally,prediction strengths of the stiffened columns are somewhat larger than strengths of the unstiffened columns. Numerical strength was also compared with the prediction strengths of the GB code and AS/NZS standard. It shows that the numerical method could be better to predict the strength of the GB code than that of the AS/NZS standard.

关键词： Cold-formed steel SHS and RHS Prediction strength Stub column Stiffened section

作者: Tao Lv Lei Wang Ai-Zhu Zhu Hong-Ping Zhu

作者单位: School of Civil Engineering,Wuhan University,Wuhan 430072,P.R. China Changjiang Institute of Suevey, Guangxi Key Lab of Construction Engineering Detecting and Testing,Guilin 541004,P.R. China School of Civil Engineering and Mechanics, Huazhong University of Science and Technology,Wuhan 43007 School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074

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: 253-259

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）