FINITE ELEMENT ANALYSIS OF DISTORTIONAL BUCKLING OF COLD-FORMED CHANNEL COLUMN
YE Qian,YAO Jian Department of Civil Engineering, Zhejiang University, Hangzhou 310027,China
Thin-walled , cold-formed steel column tend to be local and distortional buckle. Between them local buckling has been considered in the GB50018-2002 specification , but distortional buckling has not been mentioned in the GB50018-2002 specification, which is quite common in practical use. This article analyses members having the same sections but with different length and load eccentricity and then consider influence of the geometric imperfection. The analysis results will be compared with experimental results.