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提出一套框支剪力墙结构抗震的安全性评估原则,用于评估按照中国现行规范设计的一系列框支剪力墙结构模型.通过罕遇地震作用下弹塑性时程分析,获取结构及构件的变形和内力,采用基于变形指标的性能评估方法来评估结构各构件在大震下的破坏情况,分析结构的整体安全性及各构件的性能分布情况.结果表明:框支剪力墙结构的薄弱层位于转换层以上一层,而薄弱层的框支剪力墙容易发生剪切破坏;用现行规范大震下薄弱层层间弹塑性位移角无法准确评估框支剪力墙结构的性能.
This paper proposes a set of safety assessment principles of frame-supported shear wall structure aseismic for evaluating a series of frame-supported shear wall structure models designed according to Chinese current codes.According to elastic-plastic time history analysis under rare earthquakes, Component deformation and internal force, the method of performance evaluation based on deformation index is used to evaluate the damage of each component under large earthquake, and the overall safety of the component and the performance distribution of each component are analyzed.The results show that the structure of frame-supported shear wall Of the weak layer is located above the conversion layer and the shear wall of the weakly framed shear wall is prone to shear failure. The performance of the frame-supported shear wall structure can not be accurately evaluated by the elasto-plastic displacement angle of the weak layer under the current standard large earthquake .