无限元与有限元耦合在地基计算中的应用  

The Application of Infinite Element and Finite Element Coupling in Foundation Engineering

作　　者：韩绪[1] 王家林[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《土工基础》2014年第1期75-78,共4页Soil Engineering and Foundation

摘　　要：在岩土工程或地下结构工程中地基实际是无限大的,采用常规有限元法来求解无限域问题时,通常取一个较大的有限区域并施加相应的边界条件来模拟无限区域,这种做法会面临计算量与计算精度之间的矛盾。将C++程序与有限元理论及无限元理论结合起来,编写含无限元的空间问题的有限元程序,可有效地解决在实际工程无限域问题计算精度和计算效率之间的矛盾。The infinite boundaries are existed in foundation engineering as well as underground engineering. The conventional finite element method is used in solving these problems, a large limited area is considered and certain boundary condition is im- posed to simulate the infinite boundaries. The dilemma between the computational time and the accuracy achieved is usually in- duced from this approach. The combination of infinite element and the finite element theories throughout a C＋＋ programming method so that the finite element meshes can have infinite elements. As a result, the computation time can be limited without the computation accuracy.

关 键 词：无限元 有限元 无限区域 空间问题 

分 类 号：TU470[建筑科学—结构工程]