摘要
针对现行规范关于框支剪力墙结构设计中楼层侧向刚度控制准则的局限性,从理想化悬臂杆件的抗侧刚度和变形出发,提出高层建筑转换层结构底部刚度的需求应使结构的变形与理想化悬臂杆件的变形接近;通过经典力学原理推导出上述理想杆件变形曲线,并以此曲线为基准,得出符合此曲线的结构层间位移角,以工程界所熟悉的层间位移角比值作为控制参数反映高层建筑转换层结构的楼层侧向刚度比。进行一系列按不同的楼层刚度控制准则下的典型框支剪力墙结构在地震作用下的弹性及弹塑性性能分析,通过对转换层结构的动力响应和屈服机制进行比较,初步证明该文所提出的楼层侧向刚度控制准则较现行规范更趋合理,可供工程借鉴。
Different criterions are established for inter-storey lateral stiffness ratio of frame-supported shear-wall structures in current codes. Analogous to the deformation characteristics of an ideal cantilever element, the lateral stiffness requirements of the transfer story in a high-rise building is put forward, which is determined according to the deformation of an ideal element. A number of elastic and elastic-plastic analyses of typical frame-supported shear wall structures are carried out. These structures are designed according to different lateral stiffness criterions and are excited by various earthquake waves. A comparison shows that the storey lateral stiffness criterion proposed in this paper is more reasonable than those in current codes.
出处
《工程力学》
EI
CSCD
北大核心
2010年第4期125-132,共8页
Engineering Mechanics
基金
广东省自然科学基金项目(06105416)
关键词
框支-剪力墙结构
楼层侧向刚度
层问位移角
弹塑性时程分析
转换虞结构
frame-supported shear wall structure
inter-storey lateral stiffness
storey drift ratio
elastic-plastic time-history analysis
transfer storey structure
