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A Study on the Buckling Strength and Effective Length of Tubular Member with Gusset Plate Considering End Restraints  

Kim, Woo Bum (공주대학교 건축공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.15, no.2, 2003 , pp. 159-165 More about this Journal
Abstract
A tubular member with through-gusset plate is often used to transmit axial compression in an electric transmission towers. In current code, the strength of tubular member is evaluated with an effective length factor k=0.9 without considering the deformation of boundary element. A buckling strength of member with end gusset plate is affected by stiffness ratio($\beta$) and the length ratio(G) between main tubular member and end gusset plate. In this study theoretical mechanism based on the elastic buckling behavior was investigated, and finite element analysis was performed to propose a formula for the buckling strength and effective length factor of tubular member in elsatic and inelastic ranges.
Keywords
Gusset; Effective length; Buckling lode; Stiffness ratio;
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