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对仅设置多道竖向槽钢加劲肋的钢板剪力墙承受轴向压应力的情况,进行了大量有限元弹性屈曲分析,得到了轴向压应力随加劲肋抗弯刚度和加劲肋抗扭刚度变化的曲线,以及加劲板的临界应力等于小区格按简支计算的轴压屈曲临界应力条件下加劲肋双面布置时加劲肋的门槛刚度。在加劲肋刚度小于门槛刚度时给出了钢板剪力墙弹性轴压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。与数值计算结果的比较表明,公式具有良好的精度,并且公式结果均在安全一侧。
A lot of finite element elastic buckling analysis is carried out on the steel plate shear wall with only a plurality of vertical channel steel stiffeners under axial compressive stress. The axial compressive stress is obtained with the bending stiffness of stiffener and the torsional stiffness of stiffener The curve of stiffness variation and the critical stress of the stiffener are equal to the stiffener stiffener stiffener stiffness when both sides of the stiffener are arranged under the critical stress of axial buckling calculated by simple support. When the stiffener stiffness is less than the stiffness of the sill, the relationship between the critical stress of buckling and the stiffness of the stiffener is given. The two-sided stiffening with one-sided stiffening, staggered stiffening two cases were compared, obtained the latter two of the threshold stiffness amplification factor. The comparison with the numerical results shows that the formula has good accuracy and the formula results are on the safe side.