摘要
在对结构静力弹塑性分析方法的物理意义进行了有益的探讨之后,指出了该方法存在的一些局限,考虑了结构第二、第三两阶振型对结构地震反应的影响,并在把MDOF体系转换为SDOF体系和进行等效SDOF体系的动力时程分析时,将结构视为两个不同的结构。数值结果表明:采用本文的改进方法以后,计算精度明显提高。
In this paper, some limitations of structural static pushover analysis method are indicated after investigations on its physical meaning. The effects of second and third modes on the structural seismic response are considered. And the structure is treated as two different structures when transforming a MDOF system into equivalent SDOF system and processing SDOF system's time history analysis. Numerical example demonstrates that the result accuracy of the present approach has been improved significantly.
出处
《工程力学》
EI
CSCD
北大核心
2003年第4期45-49,共5页
Engineering Mechanics
基金
湖南省自然科学基金重点项目(JJY97284)
国家计委科研项目资助
关键词
静力弹塑性分析
位移形状向量
目标位移
MDOF体系
SDOF体系
Degrees of freedom (mechanics)
Dynamic response
Earthquakes
Mathematical transformations
Numerical analysis
