摘要
我国《建筑抗震设计规范》和《高层建筑混凝土结构技术规程》关于框架-剪力墙结构地震层剪力分配的规定是依据设计经验提出来的,并没有考虑框架与剪力墙各自抗侧刚度比值的影响,因而较为笼统,明显欠缺合理性。连续化分析方法中框架-剪力墙结构的刚度特征值是表征框架-剪力墙受力和变形的重要指标。本文采用静力弹塑性分析(Pushover)方法和动力弹塑性时程分析方法对刚度特征值为1.0~4.5的8栋框架-剪力墙结构做了全过程研究,得到了多遇、基本和罕遇地震作用下不同刚度特征值的框剪结构楼层剪力分配,以及罕遇地震下剪力墙刚度退化对楼层剪力分配的影响,并给出了框架层剪力分配公式供设计参考。
The provisions about the distribution of seismic shearing force of frame shear wall structures in Code for seismic design of buildings and Technical specification for concrete structures of tall building of our country is based on domestic and foreign design experience,no account of lateral stiffness ratio of frame and shear wall is considered,and therefore relatively general,obviously unreasonable. In order to solve this problem,this paper studied the seismic response of 8 frame shear wall structure buildings,with stiffness characteristic values arranging from 1. 0 to 4. 5,by the application of static elastic-plastic analysis( Pushover) method and dynamic time-history method. Distribution of storey shearing force of frame-shear wall structure buildings with different stiffness characteristic values under frequent earthquake, basic earthquake,as well as rare earthquake is obtained. The influence of shear wall stiffness degradation on the distribution of storey shearing force is also studied to summarize a frame structural storey shearing force distribution formula for design reference.
出处
《建筑结构》
CSCD
北大核心
2012年第S2期294-299,共6页
Building Structure
关键词
框架-剪力墙
层剪力分配
静力弹塑性分析
动力时程分析
frame-shear wall structure
shearing force distribution
pushover analysis
dynamic time-historical analysis
