岩土力学2017，Vol.38Issue(3)：866-874,901,10.DOI:10.16285/j.rsm.2017.03.032
3D GIS与有限元模拟无缝耦合方法及其在隧道工程中的应用研究
Seamless coupling of 3D GIS techniques with FEM and its application to tunneling engineering
摘要
Abstract
For the integration of GIS spatial information and a variety of field data obtained by numerical simulation,FEM (finite element method) is necessary to be combined with GIS.To improve the efficiency of system development,the open source softwares,such as GRASS GIS and VTK,are used to establish complex system development framework combining FE simulation and GIS by Python language.The platform named 3DPyGisTFEM enables seamless coupling between FE calculation and 3DGIS for tunneling analysis.Moreover,the algorithm of tunnel model generation connects a series of contour lines with tunnel center lines.The geological sections of tunnel excavation can be obtained by cutting operation on different strata layer DEMs and tunnel models.The triangular meshes for finite element simulation introduced by Delaunay mesh generation algorithm improve TIN model of GIS.The field data of research area are generated by interpolation of multiple geological sections simulation results from FEM.Then,the seamless coupling method with FEM in GIS is realized through comprehensive analysis of field data using GIS spatial analysis methods.The Huangjiazhai tunnel engineering example shows that the ground surface elevation from tunnel crown has greater influence on surface settlement than other factors,such as relative slope,buffer and etc.关键词
有限元法/地理信息系统/Delaunay网格剖分算法/无缝耦合/隧道工程Key words
FEM (finite element method)/3D GIS (three dimensional geographic information system)/Delaunay mesh generation algorithm/seamless coupling/tunneling engineering分类
数理科学引用本文复制引用
刘振平,刘建,何雨微,贺怀建,卞康..3D GIS与有限元模拟无缝耦合方法及其在隧道工程中的应用研究[J].岩土力学,2017,38(3):866-874,901,10.基金项目
国家重点研发计划项目(No.2016YFC0401802) （No.2016YFC0401802）
国家自然科学基金重点项目(No.51539002) （No.51539002）
国家自然科学青年基金项目(No.51204158,No.51209198).This work was supported by the National Key Research and Development Project (2016YFC0401802),the Key Program of National Natural Science Foundation of China (51539002) and the National Natural Science Foundation for Young Scientists of China (51204158,51209198). （No.51204158,No.51209198）
