应用MapInfo 7和Surfer 8.0计算土方工程量
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摘要
目的应用MapInfo 7对空间数据的分析与查询功能构造数字高程模型(Dig-ital Elevation Model,DEM);结合Surfer 8.0的曲面建模功能计算土方工程量.方法将地形图的AutoCAD文件或DXF文件转化为MapInfo表文件;利用MapInfo 7提取坐标点x,y,z数据,导出DEM数据;利用Surfer 8.0将导出的DEM数据进行网格化处理;根据三维表达结果,分别计算原始地形体积和设计地形体积,并进一步计算土方工程量.结果应用此方法结合实例计算了土方工程量.结论应用MapInfo 7和Surfer 8.0计算土方工程量的方法,相对于常用的方格网法、断面法和等高线法,更为简洁、直观,在提高土方计算精度的同时,实现了计算的自动化.
MapInfo 7 can be used to analyze and obtain the 3D space data and to construct Digital Elevation Model.Combined with the surface modeling and earthwork volume calculation function of Surfer 8.0,MapInfo 7 is applied to calculate earthwork volume.Firstly,the AutoCAD document or DXF document of relief map is converted into MapInfo table form and the DEM data are exported by obtaining the coordinate data with MapInfo 7.Secondly,the DEM data are turned into grid with Surfer 8.0 to demonstrate in 3D version.Finally,according to 3D data,the earthwork volume is calculated by calculating the original volume and designed volume respectively.Calculation of earthwork volume by MapInfo 7 and Surfer 8.0 is more succinct and direct compared with Grid method,Ross-section method and Contour lines method.Not only is the accuracy of earthwork volume calculation improved,but also automation of calculation can be achieved.
MapInfo 7 can be used to analyze and obtain the 3D space data and to construct Digital Elevation Model.Combined with the surface modeling and earthwork volume calculation function of Surfer 8.0,MapInfo 7 is applied to calculate earthwork volume.Firstly,the AutoCAD document or DXF document of relief map is converted into MapInfo table form and the DEM data are exported by obtaining the coordinate data with MapInfo 7.Secondly,the DEM data are turned into grid with Surfer 8.0 to demonstrate in 3D version.Finally,according to 3D data,the earthwork volume is calculated by calculating the original volume and designed volume respectively.Calculation of earthwork volume by MapInfo 7 and Surfer 8.0 is more succinct and direct compared with Grid method,Ross-section method and Contour lines method.Not only is the accuracy of earthwork volume calculation improved,but also automation of calculation can be achieved.
引文
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[4]车志强,宋春燕,肖昭然.AutoCAD向MapInfo的转换[J].土工基础,2004,18(6):58-60.
[5]Anssi J,Robert E.MapInfo Native Table Format[M].New York:MapInfo Corporation,2000.1-12.
[6]张立强,童小华,杨崇俊,等.三维地形的动态生成及空间分析[J].同济大学学报,2003,31(6):738-742.
[7]李志林,朱庆.数字高程模型[M].武汉:武汉大学出版社,2001.
[8]戴仕宝,杨世伦.一种简便的由地形图生成三维地形图的方法[J].滁州学院学报,2004,6(4):108-109.
[9]Troy N Y.The MapInfo Interchange File(MIF)For-mat Specification[M].New York:MapInfo Corpora-tion,1999.673-693.
[2]建筑工程手册编委会.建筑工程手册:建筑工程施工卷[M].北京:地震出版社,1994.
[3]杜巧玲,吴秀芹,张淼.MapInfo 7中文版入门与提高[M].北京:清华大学出版社,2005.
[4]车志强,宋春燕,肖昭然.AutoCAD向MapInfo的转换[J].土工基础,2004,18(6):58-60.
[5]Anssi J,Robert E.MapInfo Native Table Format[M].New York:MapInfo Corporation,2000.1-12.
[6]张立强,童小华,杨崇俊,等.三维地形的动态生成及空间分析[J].同济大学学报,2003,31(6):738-742.
[7]李志林,朱庆.数字高程模型[M].武汉:武汉大学出版社,2001.
[8]戴仕宝,杨世伦.一种简便的由地形图生成三维地形图的方法[J].滁州学院学报,2004,6(4):108-109.
[9]Troy N Y.The MapInfo Interchange File(MIF)For-mat Specification[M].New York:MapInfo Corpora-tion,1999.673-693.
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