摘要
本文以变截面筒中筒结构为例建立了地基、基础与上部结构共同工作的自由振动模型；导出了计算储存在半无限弹性地基中弹性变形能所需的各种地基刚度。通过对广东国际大厦所采用的筒中筒结构的自由振动分析，得出了一些令人满意的比较切合实际的结论。
In the paper a new semi-analytical method for three-dimensional free vibration analysis of interactions between semi-infinite elastic subgrade and foundation and superstructure of tall buildings is developed. The various subgrade stiffness parameters for evaluating elastic strain energy stored in subgrade are inferred by using the principle of energy equivalency. This method is applied to analyze the tube-in-tube reinforced concrete structure adopted by Guangdong Guoji Building. The numerical results obtained are compared with that of model test.
出处
《工程力学》
EI
CSCD
北大核心
1999年第3期7-14,共8页
Engineering Mechanics
基金
国家自然科学基金!59878022
关键词
高层建筑结构
变截面筒中筒
弹性地基
自由振动
tall buildings structUre
dynamics of structUres
energy principle
semi-analyticalmethod
interactions betWeen superstructUre and foundation and subgrade
