基于DEM构造的空间网格曲面模型确定土方工程零线
|
摘要
目的利用数字高程模型(digital elevation model,DEM)构造原始地形和场平设计地形的空间网格曲面模型,确定土方工程中的零线.方法通过实测提取原始地形DEM数据;依据空间直线方程,推导空间线段上任意点的坐标与方向余弦的数学关系式,采用Fortran90程序设计语言编写DEM数据提取程序,自动提取场平设计地形DEM数据;应用Surfer8.0和MapInfo软件构造规则的网格空间曲面模型并导出网格节点数据;擦除场平设计范围外数据.结果根据空间曲面交线上任意对应点的坐标x、y、z相等的性质,找出x、y、z数据相同的节点并连线,该线段即为土方工程的零线.应用此法尝试确定本山影视基地土方工程的零线,本法与方格网法比较,误差小于方网格法.结论用DEM构造的空间网格曲面模型可确定土方工程的零线,其零线的定位精度高于方网格法,该法为科学施工提供了更加准确的依据.
Earthworks zero line is determined by constructing the spatial gridding curved surface model of the original terrain and the field leveling design terrain by digital elevation mode(DEM).The DEM data of original terrain are obtained by actual measurement.The mathematical correlation is deducted to demonstrate the relationship between the coordinates of any point on spatial line and the direction cosine by the spatial linear equation.DEM data obtaining program is compiled by Fortran90 and it is applied automatically to obtain the DEM data of field leveling design terrain.The standard gridding curved surface models are constructed by Surfer8.0 and MapInfo and the gridding joints data are deducted.Then,the data out of the range of design scope are erased.Since the coordinates(x,y z)of any corresponding point on the spatial gridding curved surface are equal,the earthworks zero line is obtained by connecting two points with the same coordinates(x,y,z).The method mentioned above is applied to the estimation of earthworks zero line of the project of Benshan Film and Television Base and it is found to be superior to the grids method in precision.
Earthworks zero line is determined by constructing the spatial gridding curved surface model of the original terrain and the field leveling design terrain by digital elevation mode(DEM).The DEM data of original terrain are obtained by actual measurement.The mathematical correlation is deducted to demonstrate the relationship between the coordinates of any point on spatial line and the direction cosine by the spatial linear equation.DEM data obtaining program is compiled by Fortran90 and it is applied automatically to obtain the DEM data of field leveling design terrain.The standard gridding curved surface models are constructed by Surfer8.0 and MapInfo and the gridding joints data are deducted.Then,the data out of the range of design scope are erased.Since the coordinates(x,y z)of any corresponding point on the spatial gridding curved surface are equal,the earthworks zero line is obtained by connecting two points with the same coordinates(x,y,z).The method mentioned above is applied to the estimation of earthworks zero line of the project of Benshan Film and Television Base and it is found to be superior to the grids method in precision.
引文
[1]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.
[2]罗德仁,邹自力,汤江龙.工程土方量计算比较分析[J].东华理工学院学报,2005,28(11):59-64.
[3]周越轩,刘学军,杨治洪.基于DTM的土方工程计算与精度分析[M].长沙交通学院学报,2000,16(4):39-43.
[4]李志林,朱庆.数字高程模型[M].武汉:武汉大学出版社,2001.
[5]胡学宁,石铁矛,高明.应用MapInfo7和Surfer8.0计算土方工程量[M].沈阳建筑大学学报:自然科学版,2006,22(3):491-494.
[6]王建,白世彪,陈晔.Suefer8地理信息制图[M].北京:中国地图出版社,2004.
[7]陆志波,陆雍森.Surfer8.0在环境评价和规划中的应用[J].同济大学学报,2005,33(2):191-195.
[8]周启鸣,刘学军.数字地形分析[M].北京:科学出版社,2006.
[9]朱恩利,李建辉.地理信息系统基础及应用教程[M].北京:机械工业出版社,2004.
[10]Florinsky I V,Kuryakova G A.Determination of gridsize for digital terrain modeling in landscape investi-gations exemplified by soil moisture distribution at amiroo-scal[J].International Journal of GeographicalInformation Science,2000,14(8):815-832.
[11]Franklin J,Mc Cullough P Gray C.Terrain variablesused for predictive mapping of vegetation communi-ties in southern Califormia[M]//Wilson J P,GallantJ C.Terrain Analysis:Principles and Application.New York:John Wiley and Sons.2000.
[12]Carter J R.Digital representations of topographic sur-face[J].Photogrammetric Engineering and RemoteSensing,1988,54(11):1577~1580.
[13]CHEN J,LI J,HE J et al.Development of geographi-cal information systems(GIS)in China:an overview[J].Photogrammetric Engineering and Remote Sens-ing.2002,68(4):325-332.
[14]Hutchinson M F,Gallant J C.Digital elevation modelsand representation of terrain shape.Wilson J P,Gal-lant J C.Terrain Analysis:Principles and Applications[M].New York:John Wiley and Sons,2000.
[2]罗德仁,邹自力,汤江龙.工程土方量计算比较分析[J].东华理工学院学报,2005,28(11):59-64.
[3]周越轩,刘学军,杨治洪.基于DTM的土方工程计算与精度分析[M].长沙交通学院学报,2000,16(4):39-43.
[4]李志林,朱庆.数字高程模型[M].武汉:武汉大学出版社,2001.
[5]胡学宁,石铁矛,高明.应用MapInfo7和Surfer8.0计算土方工程量[M].沈阳建筑大学学报:自然科学版,2006,22(3):491-494.
[6]王建,白世彪,陈晔.Suefer8地理信息制图[M].北京:中国地图出版社,2004.
[7]陆志波,陆雍森.Surfer8.0在环境评价和规划中的应用[J].同济大学学报,2005,33(2):191-195.
[8]周启鸣,刘学军.数字地形分析[M].北京:科学出版社,2006.
[9]朱恩利,李建辉.地理信息系统基础及应用教程[M].北京:机械工业出版社,2004.
[10]Florinsky I V,Kuryakova G A.Determination of gridsize for digital terrain modeling in landscape investi-gations exemplified by soil moisture distribution at amiroo-scal[J].International Journal of GeographicalInformation Science,2000,14(8):815-832.
[11]Franklin J,Mc Cullough P Gray C.Terrain variablesused for predictive mapping of vegetation communi-ties in southern Califormia[M]//Wilson J P,GallantJ C.Terrain Analysis:Principles and Application.New York:John Wiley and Sons.2000.
[12]Carter J R.Digital representations of topographic sur-face[J].Photogrammetric Engineering and RemoteSensing,1988,54(11):1577~1580.
[13]CHEN J,LI J,HE J et al.Development of geographi-cal information systems(GIS)in China:an overview[J].Photogrammetric Engineering and Remote Sens-ing.2002,68(4):325-332.
[14]Hutchinson M F,Gallant J C.Digital elevation modelsand representation of terrain shape.Wilson J P,Gal-lant J C.Terrain Analysis:Principles and Applications[M].New York:John Wiley and Sons,2000.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心