STUDY ON EFFECT OF INTERNAL STRUTS PREVENTING OVERALL BUCKLING OF STIFFENED PLATED PANELS ON DUCTILITY OF THINWALLED BOX COLUMNS

Abstract

Bracing members are widely used in rigid framed structures in steel buildings to increase the ductility performance and to avoid the serious damage of them. The overall buckling of stiffened plates arises a severe damage to the thin-walled steel columns. Proposed in this paper is a strengthening technique to prevent the overall buckling of the stiffened plates of steel columns with box cross section by adding internal struts into the box cross section.
The strengthening effect of the internal struts for the stiffened plated column member is verified through analytical and experimental approaches.