摘要
在实际地震作用下 ,高层 ,特别是高宽比较大的高层结构中 ,由于倾覆力矩的作用 ,柱子 ,特别是外边柱所受轴力的变化将不可忽略。轴向变形与双轴弯曲的耦合作用 ,将是柱子塑性变形的显著特征。基于材料本构关系的“纤维模型” ,能较精确地反映轴向变形、双轴弯曲三者之间的耦合作用。一组钢筋混凝土柱子双轴压弯的计算结果与试验结果的比较 ,证明了“纤维模型”
The changing of axial forces in columns of high rise buildings under earthquake is not negligible. Plastic deformations in different degrees of freedom happening in the same cross section of a column are coupled. Fiber Model works well in calculating the coupled deformations in reinforced concrete columns, which is verified by the comparison between test and calculation results of 7 specimens of RC column under 7 different biaxial loading paths in this paper.
出处
《地震工程与工程振动》
CSCD
北大核心
2002年第4期74-80,共7页
Earthquake Engineering and Engineering Dynamics
基金
上海市建设技术发展基金会项目 (A990 5 118)
