Biot固结平面有限元程序网格局部加密方法研究

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THE LOCAL MESH DENSIFICATION METHOD FOR 2-D FEM OF BIOT CONSOLIDATION THEORY

1.
1. Architectural and Mechanics College,Shanghai Jiaotong University Shanghai 200240;
2.
2. Zhejiang Qiantangjiang River Administration Hangzhou 310016

摘要: 为了解决软土地基上的构筑物沉降过大、承载力不满足等问题，很多学者依据Biot固结理论编制了大量的有限元程序。要在基本相同的计算量的前题下获得足够的精度，需要对有限元网格进行局部加密处理。作者提出的加密方法合理解决了接触单元和多级加载问题，并使用C++Builder开发工具编制了加密程序，最后给出一个工程实例验证了方法的可行性。
- Biot固结理论 /
- 基础沉降 /
- 局部加密 /
- 有限元
Abstract: In order to solve the problems of settlement and resistance of soft soil foundation, a lot of 2-D FEM programs based on Biot consolidation theory are written.The mesh needs to be densified to get accuracy.In this paper a practical local mesh densification method, which can deal with the problems in 2-D FEM of Biot consolidation theory that usually interface element and multi-loads are included, is given.At last, the authors write a mesh densification program which shows the method is correct and very useful for a real project.
- Biot consolidation theory /
- foundation settlement /
- local densification /
- FEM