【摘要】 为研究设置竖向加劲肋的钢板剪力墙的弹性屈曲性能,采用有限元法对竖向加劲钢板剪力墙弹性屈曲性能进行研究,分析加劲肋的刚度、加劲数量和钢板高宽比等因素的影响。研究表明:设置竖向加劲能有效提高钢板墙剪切临界应力,钢板高宽比、加劲肋数目和加劲肋抗弯刚度均对钢板剪力墙屈曲系数有较大影响。提出加劲肋门槛刚度的判定标准和计算公式,该判定标准考虑了加劲肋扭转刚度的影响。与有限元结果的比较表明,具有较好的精度,且明显优于文献结果。更多还原

【Abstract】 To study the elastic-buckling behaviors of steel plate wall with longitudinally stiffened only,the present design formulas and regulations for the design of stiffeners in steel shear walls were compared.And elastic-buckling behaviors of steel plate wall with longitudinally stiffened only were analyzed in detail with 3 D finite element methods(FEM).The effects of stiffener stiffness,stiffener number and aspect ratio of steel plate were analyzed.The research results showed that the longitudinal stiffener could increase the critical stress of steel plate wall efficiency,and the elastic shear buckling coefficient of stiffened steel plate wall was affected largely by the aspect ratio of steel plate,stiffener number and the bending stiffness of stiffener.The determination criterion of threshold stiffness and formula for stiffener were proposed.The torsional stiffness of stiffener was considered in the criterion.At last,the formula of elastic buckling coefficient for steel plate wall with longitudinally stiffened only was derived.Comparison with the numerical results showed that the accuracy of the formula was good and was superior than that of formulas in literature.更多还原