AutoCAD地形建模及其在土方计算中的应用

26320039121AutoCAD[;AutoCAD;[]P258[]B[]1001-8379(2003)03-0121-03APPLICATIONOFAUTOCADINTERRAINMODELINGANDEARTHWORKMEASURINGZHOULe-tao1FANDong-ming1ZHANGXian-zhou1ZHAOXu2(1.SouthwestJiaotongUniversity,Chengdu610031;2.ChengduCitySurveyingandMappinginstitute,Chengdu610081)Abstract:AdvancesanapproachtoestablishterrainentitymodelbyusingdiscreteterrainpointsandtoquicklymeasurethecubageoffillingandexcavationinAutoCAD,atthesametimeprotractsthevisualboundariesoffillingandexcavation.Keywords:earthwork;AutoCAD;terrainmodelAutoCADAutoCADDelaunayn2nAutoCADDelaunayXi,Yi,HiX1,Y1,H1…Xn,Yn,HnX1,Y1,H1…Xn,Yn,HnX1,Y1,H11GeoTinArcViewMapGISDelaunayAutoCADLawsonLOPLOP11IndexNo.EastNorthElevationAttribute111702.23829272.138529.001211728.54329292.040529.391……………1004812003.06531517.798530.9411004912015.90831513.262530.9112Delaunay122263200392No.IndexNo.IndexNo.IndexNo.12361851842167700184…………2007251115095509220073511151105095.AutoCAD33DFACECAD2)AutoCAD133AutoCAD_3dface11502.632,29504.985,530.5711466.046,29556.897,530.6811381.052,29648.533,531.63_3dface11306.843,29739.832,531.3011287.989,29759.354,531.1611381.052,29648.533,531.63…………_3dface11436.371,30945.635,529.6411451.061,30937.366,528.4911434.992,30935.579,527.69_3dface11436.371,30945.635,529.6411439.145,30949.526,530.3511451.061,30937.366,528.4912AutoCADUNION242EXTRUDE343Z34Zt(540m)1)XYZAutoCADREGION263200391232)AREA3)EXTRUDE6ZZt556()SUBTRACT(7)8INTERSECT8MASSPROP885992.3m3.MPR85968.9m3±0.03%781000AutoCAD[1],,.Delaunay[J].,2000,4(1):32-34.[2],.Delaunay[J].,2001,30(1):82-85.[3].AutoCAD2000[J].,2002,32(5):32-35.[]2002-12-12[](1977),,