摘要
采用等参数映射法自动形成边坡三维计算网格,考虑了抗滑桩支护结构及支护体和岩土体交界面的网格细部剖分,交界面采用无厚度接触单元剖分和模拟,并对剖分好的例子采用强度折减有限元法进行计算分析,和极限平衡法计算结果进行了对比。结果表明,利用计算机技术进行数字化建模,能有效地提高有限元计算前处理工作的速度和质量,建议的剖分方法和计算方法合理可靠。
The paper proposes a method to automatically generate three- dimensional finite element mesh for the calculation of slope reinforced by anti- sliding pile by isoparametric mapping, This method takes into account the detail mesh partition of anti -slide pile supporting structure and the boundary of pile and soil/pile, and use zero - thickness contact elements to subdivide and simulate the boundary. A slope example subdivided by mesh is calculated and analyzed with strength reduction finite element （FEM） method, and the result of FEM calculation is compared with one of calculation with limit equilibrium method. The results show that the digitized modeling by computer technology can effectively speed the pre - processing of finite element calculation and improve its quality, the suggested methods of mesh partition and calculation are reasonable and feasible.
出处
《矿业研究与开发》
CAS
北大核心
2008年第2期29-31,57,共4页
Mining Research and Development
基金
国家重点基础研究发展规划项目(973)(2002CB412704)
关键词
边坡
抗滑桩
网格自动剖分
强度折减有限元法
Slope, Anti - sliding pile, Automatic mesh genera-tion, Strength reduction FEM
