摘要
本文系统介绍了基于位移的一般结构静力弹塑性(pushover)分析方法、自适应结构静力弹塑性(pushover)分析方法,指出了基于力的结构静力弹塑性(pushover)分析方法与基于位移的结构静力弹塑性(pushover)分析方法的差别。应用各种结构静力弹塑性(pushover)分析方法对一7层和15层框架剪力墙结构进行了计算与比较分析。算例结果表明,应用基于位移的一般结构静力弹塑性(push-over)分析方法对结构的抗震性能进行评估时,不受高阶振型的影响,结果更加准确合理。
In this paper, an innovative displacement-based adaptive pushover procedure, in which a set of laterally applied displacements, rather than forces, is monotonically applied to the structure, is presented. The integrity of the analysis algorithm is verified through an extensive comparative study involving static and dynamic nonlinear analysis of a 7-story frame shear wall structure and a 15-story frame shear wall structure. It is shown that the new approach manages to provide much improved response predictions throughout the entire deformation range, in comparison to those obtained by force-based methods. This novel adaptive pushover method is therefore shown to constitute an appealing displacement-based tool for structural assessment, fully in line with the recently introduced deformation- and performance-oriented trends in the field of earthquake engineering.
出处
《地震工程与工程振动》
CSCD
北大核心
2006年第5期73-80,共8页
Earthquake Engineering and Engineering Dynamics
基金
湖南省自然科学基金项目(02JJY2085)
北京市重点实验室开放基金项目(EERS2004-4)
