Abstract
The L-type steel column studied here is a special-shaped column composed of a square steel pipe and two of T-shaped steel, which are connected by weld. Because the columns have better properties than ordinary steel columns, it may be wildly used in residential steel structures. Therefore, it is quite valuable to study the bearing capacity and stability of the new steel columns. Three of specimens of the column are tested, and behaviour of deformation, distribution of displacements and stresses, and bearing capacity are presented. Effect of related factors on property of the steel column are discussed. It is concluded that the local buckling happened before finally failure of the column, which is sensitive to geometric defects.
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