竖向槽钢加劲钢板剪力墙剪切屈曲  

ELASTIC SHEAR BUCKLING OF STEEL SHEAR WALLS STRENGTHENED VERTICALLY BY CLOSED SECTION STIFFENERS

作　　者：童根树[1] 陶文登[1] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058

出　　处：《工程力学》2013年第9期1-9,共9页Engineering Mechanics

基　　金：国家自然科学基金项目(51078328)

摘　　要：对设置多道竖向闭口加劲肋的钢板剪力墙的剪切屈曲进行了有限元弹性屈曲分析,得到了剪切应力随加劲肋抗弯和加劲肋抗扭刚度变化曲线,以加劲板临界应力等于小区格按简支计算的剪切屈曲应力为条件,得到了双面加劲肋的门槛刚度。刚度小于门槛刚度时给出了剪切屈曲临界应力与加劲肋刚度的关系;将双面加劲同单面加劲、交错单面加劲两种情况进行比较,得出了后两者的门槛刚度放大系数。与数值结果比较表明:公式具有良好精度且偏安全。The shear buckling of steel Plate shear walls stiffened vertically by closed form stiffeners is investigated, and curves of relating shear buckling stresses to flexural and torsional rigidities of stiffeners are presented. Threshold rigidities of stiffeners determined by the demand that the critical shear stresses be equal to the buckling stress of simply supported sub-panels, are presented. In the case that the rigidities of stiffeners are less than the threshold value, a formula is proposed relating the buckling stress to the rigidities of stiffeners. Plates stiffened by one side channels or stiffened by one side channels alternately on the both sides of the plate are analyzed and compared with double-sided stiffeners. A modification factor is proposed for the threshold stiffness of one-sided stiffeners.

关 键 词：钢板剪力墙 剪切应力 加劲肋 门槛刚度 弹性屈曲 

分 类 号：TU392.4[建筑科学—结构工程]