The Ultimate Load-Carrying Capacity In-Plane Of Tapered Member

For tapered H-section members, thin and high webs are adopted in advanced design method, and these design both fully develop flange bearing capacity and save materials. This kind of design method can lead to local buckling of web,but this dosen't mean to lose bearing capacity. Based on the non-linear shell element method, analysis for ultimate load-carrying capacity of tapered H-section column in plane is carried out. Considering the interaction of web local buckling and overall buckling of member, the effects of web width to thickness ratio, flange width to thickness ratio, slenderness ratio of member and web tapering ratio on ultimate load-carrying capacity of column are analyzed and evaluated systematically. After comparing the analyse results of non-linear finite element method with those of current "Technical specification for steel structure of light-weight buildings with gabled frames", some valuable conclusions are obtained.