STRENGTH OF H-SHAPED BRACE CONSTRAINED FLEXURAL BUCKLING HAVING UNCONSTRAINED AREA AT BOTH ENDS : Both ends simply supported

Abstract

The purpose of this paper is to evaluate strength of H-shaped brace constrained flexural buckling having unconstrained area at both ends. It is assumed that brace and hollow section constraining flexural buckling deform continuously. The strength is calculated using continuous bar model of non-uniform section. The propriety of strength evaluation methods was verified by structural experiments. As a result, it was shown that because of having unconstrained area the collapse mode changes from bending yield of constraining member to yield of the brace caused by axial force and additional bending moment at unconstrained area.