STIFFENER STIFFNESS AND ELASTIC BUCKLING STRESS OF STEEL PLATE SHEAR WALL

The current design formula for the critical shear stress in JGJ99-98(Technical specification for steel structure of tall buildings) is applied mainly to the design of closely-stiffened plates.However,in practice,the steel shear walls are often stiffened with 1 or 2 longitudinal stiffeners.This paper presents a new study on the elastic buckling of the sparsely-stiffened plates under shear loading.More than 1,600 models are analyzed with the 3-D finite element method(FEM).The plates transversely stiffened with only 1 and 2 longitudinal stiffeners are analyzed.Formulas are presented,comparisons with the numerical results show that the accuracy is good and the formers are reasonably conservative.And the formulas can be applied to practical engineering.