整体式隧道衬砌弹性链杆识别程序在ANSYS中的实现

Identifying Elastic Link Routine in Calculating the Light of Monolithic Ling in FEM-ANSYS

按荷载—结构模型设计隧道衬砌时,在有限元中以弹性链杆模拟围岩与衬砌之间的相互作用。在ANSYS等通用有限元软件中并没有专门识别弹性链杆受拉或受压再进行求解的程序模块。在进行蒙特卡罗有限元分析计算时,为了提高计算效率,避免人为失误,应用Fortran语言,在ANSYS基础上二次开发,以程序方式实现了识别受拉链杆并去掉—求解—再识别…—只剩受压链杆的过程,这也符合可靠度计算方法蒙特卡罗-有限元输入命令参数化的要求。

Based on load-structure model, elastic link is used to simulate the interaction between ling and wall rock in FEM. And there is no special routine to identify, remove tension link and loop computing in universal FEM software ANSYS etc. In order to improve the speed of calculation and avoid mistake, Routine which is compiled in FORTRAN language by author is used to identify, remove tension link and loop computing, and meet the necessity of input parameterization in probability design method-Monte-Carlo FEM.