COLD-FORMED STEEL BUILT-UP CLOSED SECTIONS WITH INTERMEDIATE STIFFENERS

摘要：

The paper presents a test program on innovative cold-formed steel built-up closed sections with intermediate stiffeners. The test specimens were firstly brake-pressed from structural steel sheets to form open sections with intermediate web stiffeners, then two of the open sections were connected at their flanges using self-tapping screws to form the built-up closed sections. The innovative specimens were compressed between fixed ends condition. The material properties of the column specimens were obtained by tensile coupon tests. The column test strengths were compared with the design strengths calculated using the direct strength method. Three different methods were used to obtain the local and distortional buckling stresses for the calculation of the direct strength method. Generally, it is shown that the direct strength method using single section to obtain the buckling stresses are conservative.

关键词： Built-up sections Cold-formed steel Columns Distortional buckling Experimental investigation Local buckling Steel structures Structural design Thin-walled structures

作者: Ben Young Ju Chen

作者单位: The University of Hong Kong, Pokfulam Road, Hong Kong Zhejiang University, Hangzhou, China

会议类型: 国际会议

会议名称: The 9th International Conference on Steel Space & Composite Structures(第九届国际钢材、空间结构、组合结构会议)

会议地点: 烟台·北京

会议语种:英文

页码: 43-53

在线出版日期: 2007-10-10（万方平台首次上网日期，不代表论文的发表时间）