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开洞剪力墙的双肢变形特性是进行抗震设计所要考虑的重要因素之一。在正交理论的变形分解基础上,实现对开洞剪力墙振型的精细识别,得到了振型相对变形分解图;进而,通过引入双肢系数,给出了开洞剪力墙振型双肢特性的量化判据;由于振型是结构完备的变形基,该方法可为剪力墙的刚度设计提供技术支持。对8层和16层钢筋混凝土开洞剪力墙试验模型的分析表明,在整体小开洞剪力墙和联肢剪力墙中间存在一种中间状态,该状态的剪力墙在横向静力作用下表现出整体变形特性,在水平地震作用下则可能表现为双肢变形特性,对此,在抗震设计中应引起足够的重视。
The deformation characteristics of the two limbs of a shear wall with a hole are one of the important factors to be considered in the seismic design. On the basis of the orthogonality theory of deformation and deformation, a detailed identification of the shear wall vibration mode is carried out, and the relative deformation deformation diagram of the shear wall is obtained. Furthermore, by introducing the double-limbs coefficient, The quantitative criterion of the characteristics of both limbs. Because the mode shape is a well-defined deformation base, this method can provide technical support for the design of the stiffness of shear walls. The analysis of the experimental models of 8-story and 16-story RC shear walls shows that there exists an intermediate state between the whole small-opening shear wall and the joint shear walls, Under the action of showing the overall deformation characteristics, under the action of horizontal earthquake may show the deformation characteristics of the limbs, which, in the seismic design should cause enough attention.