EFFECTS OF LATERAL BRACING BY FOLDED-ROOF PLATES FOR H-SHAPED STEEL PURLINS

This paper is intended for a case where folded-roof plates are attached to H-shaped steel purlins that have large lateral buckling slenderness ratio. After obtaining elastic lateral buckling strength by theoretical formula and clarifying its relationship with the lateral buckling slenderness ratio, we conducted element experiments on folded-roof plates and lateral buckling experiments on H-shaped steel purlins to which folded-roof plates are attached in order to examine their lateral buckling behavior, in conjunction with the results of finite element analysis that modeled stiffening effect of folded-roof plates using horizontal stiffening rigidity and rotational stiffening rigidity.