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对任意布置纵向单侧加劲肋的钢板剪力墙单向轴压下的屈曲性能进行研究。采用隔离体分析法,把加劲肋和被加劲钢板离散成独立个体进行受力分析,考虑加劲肋扭转和剪切变形的影响,同时加劲肋和钢板在连接线处需满足变形协调条件,求得单侧加劲板单向轴压下的屈曲临界方程,对比双面对称加劲板的屈曲临界方程,获得单侧加劲肋等效为双面对称加劲肋的等效抗弯刚度和等效抗扭刚度的解析表达式,进而获得被加劲板参与加劲肋工作的有效宽度表达式。与有限元模拟结果进行分析比对表明,公式具有良好精度,适用于任意开口和闭口截面的单侧加劲肋板。通过单侧加劲肋的等效刚度表达式,可以把单侧加劲问题转化为双侧加劲问题。
The buckling performance of uniaxial compression of steel plate shear wall with any longitudinal stiffener arranged longitudinally is studied. Using the method of isolator analysis, the stiffener and the stiffened plate are discretized into independent individuals for stress analysis. The influence of stiffener torsion and shear deformation are considered. At the same time, the stiffener and plate meet the deformation coordination condition at the connecting line, The buckling critical equation of uniaxial stiffened plate under unilateral compression is compared with the buckling critical equation of stiffened plate with double stiffeners to obtain the equivalent bending stiffness and equivalent torsional stiffness Of the analytical expression, and then be stiffened plates involved in the work of the effective width of the expression. Analysis and comparison with the results of finite element simulation show that the formula has good accuracy and is suitable for single-sided stiffener plates with arbitrary open and closed sections. Through the equivalent stiffness expression of one-sided stiffener, one-sided stiffening problem can be transformed into two-sided stiffening problem.