中高层开洞剪力墙双肢变形特性分析的正交分解法  

Coupling characteristics of medium to highrise shear wall with openings based on orthogonal decomposition method

作　　者：王东炜[1] 陈娜[1] 孙攀旭 

机构地区：[1]郑州大学土木工程学院,河南郑州450001

出　　处：《建筑结构学报》2016年第2期41-46,共6页Journal of Building Structures

基　　金：国家自然科学基金项目(50978232)

摘　　要：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。Coupling characteristic is one of the main factors of the shear wall. According to the deformation decomposition based on the orthogonal theory, the modes of the shear wall with openings were fine identified, and the relative deformation decomposition graphs of the modes were obtained. Then the quantitative criterion of the coupling characteristic and modes of the shear wall were provided by introducing the coupling factor. The proposed method could provide technical support for the stiffness design of the shear wall, since the modes are the complete deformation bases of a structure. The analysis of 8-story and 16-story reinforced concrete shear wall test models with openings shows that there is a kind of intermediate state between integrity small opening shear wall and coupled shear wall. The shear wall in the state show integral deformation characteristics under static loads and coupled deformation characteristics under lateral earthquake actions also. Specific attention should be paid to the intermediate state in seismic design.

关 键 词：开洞剪力墙 正交理论 变形分解 振型识别 双肢系数 

分 类 号：TU973.16[建筑科学—结构工程]