基于CAD地形图的初始地应力场反演快速建模程序开发

基于Visual C#2008.NET开发环境,利用AutoCAD ActiveX技术,对AutoCAD2008进行二次开发,开发出快速建立初始地应力场反演计算三维有限元模型的面向对象程序,通过该程序可以根据需要自动读取一定范围内的网格节点地面高程,能够为有限元模型变地面线处理直接利用,避免了常规人工读取CAD地面高程的繁琐性和误差较大的问题,极大地提高了工作效率和准确性,快速便捷.可以快速自动建立用于初始地应力反演计算的有限元网格模型,该模型能够较好地反映地形貌地的起伏状况,为有限元计算提供了良好的基础条件.

Program development of rapid modeling for initial stress field back calculation based on CAD relief Map

Based on Visual C # 2008.NET development environment, using AutoCAD ActiveX technology, a redevelopment on AutoCAD2008 is carried out; and an object-oriented program which can rapidly establish 3-D finite element model of initial stress field back calculation. is also developed. The program can automatically calculate the grid nodes’ ground elevations to a certain extension that could be applied to change ground-lines for finite element model. This avoids trivial artificial reading on CAD relief maps to get the surface elevations which would make big errors, thus greatly enhance the efficiency and accuracy. It’s rapid and convenient. The program can rapidly and automatically establish the finite element mesh model used to the initial stress field back calculation and the model could better simulate the state of ups and downs of the topography so as to provide a better base condition for the finite element calculation.