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对地下岔管进行有限元分析时 ,需结合其特殊空间形态和与围岩的联合承载机制 .给出了一种简单的三维有限元网格自动生成方法 ,并用FORTRAN语言编制了三维网格自动生成及其图形显示程序 .实现了采用交互式图形显示技术来离散网格并显示离散结果 .采用的方法可对各种不同类型岔管进行网格剖分 ,生成的网格质量较高 ,能够进行较为可靠的分析 ,大大减少了前处理工作量 ,可作为地下岔管有限元分析系统的一个重要组成部分 .
In the finite element analysis of the underground bifurcation pipe, a special three-dimensional finite element mesh generation method is proposed based on its special space shape and the joint bearing mechanism with the surrounding rock.The 3D mesh automation Generation and graphical display program to achieve the use of interactive graphical display technology to discrete grid and display discrete results. The method used to mesh different types of bifurcated grid, the generated grid of high quality, able to A more reliable analysis can greatly reduce the workload of pre-treatment, which can be used as an important part of the finite element analysis system of underground bifurcation pipe.