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该文对框架-弯曲型支撑的双重抗侧力体系的稳定性,采用简化模型进行分析,其中核心筒被悬臂柱代替,框架被摇摆柱代替。通过这个模型承受水平力和竖向力各自单独和共同作用下的弹塑性稳定的分析,得到了对核心筒的刚度需求。这个规律表明,竖向力和水平力共同作用下的截面刚度需求,大于水平力对核心筒截面的需求和竖向力对核心筒截面刚度的需求之和。
In this paper, the stability of the dual anti-side force system of frame-curved support is analyzed by a simplified model, in which the core cylinder is replaced by a cantilever column and the frame is replaced by a sway column. Through the analysis of the elastic-plastic stability of the model, which is subjected to both horizontal and vertical forces independently and jointly, the rigidity of the core tube is obtained. This law shows that the demand of section stiffness under the combined effect of vertical force and horizontal force is greater than the sum of the requirement of horizontal force for core section and the vertical force for core section.