摘要
现代抗震设计研究中 ,为了考虑土 -结构体系的相互作用 ,必须在计算模型中引入粘性边界。常用的是由阻尼器构成的标准的粘性边界。在此基础上提出了由阻尼器和弹簧构成的改进的粘性边界 ,在地基有限元模型的底面使用标准的粘性边界或改进的粘性边界 ,侧边使用捆绑边界。在动力计算中 ,因考虑了边界的阻尼与刚度 ,改进的粘性边界比标准的粘性边界好。
In modern design for aseismatic structures, viscous boundaries have to be introduced to take account of the soil-structure interaction.In the boundary model, the standard or modified viscous dampr are imposed at the bottom boundary while the lateral boundaries are tied together. In this case,the standard viscous boundary conditions are easy to be imposed on some artifitial truncated boundary.The modified viscous boundary is proposed here to deal with the non-plane wave behaviour near the boundary.The modified viscous boundary is reasonable.
出处
《武汉理工大学学报》
CAS
CSCD
2004年第4期71-73,共3页
Journal of Wuhan University of Technology
关键词
现代抗震设计
土-结构体系相互作用
标准的粘性边界
改进的粘性边界
modern design for aseismatic structures
soil-structure interaction
standard viscous boundary conditions
modified viscous boundary conditions
