摘要
文章讨论了剪力墙中等代框架模型的原理和适用限制条件,通过单片墙单元的弹塑性分析对比,发现该模型存在的问题,并采用该模型对一座十五层框剪结构进行推覆分析,发现该模型有可能会导致偏于不安全的计算结果,以及带来对结构薄弱层判断的偏差。同时讨论了不同楼板假定模式对推覆分析结果的影响,指出刚性楼板假定在一些情况下有可能会造成对结构抗震性能的过低估计。
The principle and application condition of equivalent frame model for shear wall are discussed in this paper. Through comparative study on a singular shear wall, the shortcoming of this model is found. Then by using this model the push-over analysis is conducted to a 15-storey frame-shear wall structure. It is showed that this model may lead to non-conservative results and inaccurate estimation of the weak storey. Influence of different floor modes to the push-over analysis is also discussed and there is evidence that an underestimation of the structural earthquake-resistance capacity may be resulted by using the rigid floor assumption.
出处
《结构工程师》
2007年第1期19-23,30,共6页
Structural Engineers
关键词
等代框架
剪力墙
推覆分析
刚性楼板
equivalent frame, shear wall, push-over analysis, rigid floor
