粘弹性人工边界理论及其在重力坝模态分析中的运用  

Viscoelastic Artificial Boundary Theory and Its Application in Modal Analysis of Gravity Dam

作　　者：李根[1] 陈庆涛 侯攀[1] 潘利坦[1] 刘安荣[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]宣城市水利水电勘测设计院,安徽宣城242000

出　　处：《水利与建筑工程学报》2009年第4期126-129,共4页Journal of Water Resources and Architectural Engineering

摘　　要：研究了在结构—地基动力相互作用问题中,人工边界理论的发展过程,重点分析粘弹性人工边界的理论价值和可行性。通过使用有限元分析软件ANSYS,设置combin14单元的参数属性,实现了对粘弹性人工边界的模拟并验证其性能的准确性。对重力坝在考虑结构—地基相互作用的情况下进行了模态分析,并和不考虑相互作用、假定地基为刚性条件下的情况进行比较。In the paper,the development process of artificial boundary theory is researched in such the problem as the dynamic interaction of structure and foundation,especially the theoretic value and feasibility of viscoelastic artificial boundary are highlighted.Through using the finite element analysis software—ANSYS and specifying the parameters of combin14,the viscoelastic artificial boundary is simulated and its precision is also verified.The modal analysis of gravity dams is made in the case of the interaction of structure and foundation and without the interaction, as well as the comparison between above cases is also made.

关 键 词：结构—地基动力相互作用 粘弹性人工边界 重力坝 模态分析 ANSYS 

分 类 号：TV642.3[水利工程—水利水电工程]