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我国现行加劲钢板剪力墙整体屈曲临界应力计算公式来自密肋加劲板,但实际工程中采用的钢板剪力墙多采用1条或2条横向加劲肋。对1600多个加劲钢板剪力墙模型进行了三维有限元弹性屈曲分析,深入研究了仅设置竖向加劲肋、竖向和1条横向加劲以及竖向和2条横向加劲肋钢板的加劲肋门槛刚度要求。并提出了加劲钢板剪力墙弹性剪切临界应力计算公式。与数值模拟结果的比较表明,新公式具有良好的精度,并且公式结果均在安全一侧,有望在工程中得到应用。
The calculation formula of the critical stress of integral buckling of the current stiffened steel plate shear wall in our country comes from the stiffener plate. However, one or two transverse stiffeners are often used in the actual engineering. In this paper, the 3D finite element elastic buckling analysis of more than 1600 stiffened plate shear wall models is carried out. The stiffener threshold with only vertical stiffeners, vertical stiffeners and one transverse stiffener as well as vertical and two transverse stiffener plates Stiffness requirements. The formulas for calculating the critical shear stress of stiffened plate shear walls are proposed. The comparison with the numerical simulation results shows that the new formula has good accuracy and the formulas are on the safe side and is expected to be applied in engineering.