[1] Cheng Jianchuan,. Three-dimensional calculation of roadway earthwork volume [J]. Journal of Southeast University (English Edition), 2005, 21 (1): 88-91. [doi:10.3969/j.issn.1003-7985.2005.01.019]
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Three-dimensional calculation of roadway earthwork volume(
)
道路土方量的三维计算方法
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 21
- Issue:
- 2005 1
- Page:
- 88-91
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2005-03-30
Info
- Title:
- Three-dimensional calculation of roadway earthwork volume
- 道路土方量的三维计算方法
- Author(s):
- Cheng Jianchuan
- College of Transportation, Southeast University, Nanjing 210096, China
- 程建川
- 东南大学交通学院, 南京 210096
- Keywords:
- earthwork volume; digital terrain model(DTM); constrained delaunay triangulation(CDT); roadway design; calculation
- 土方量; 数字地面模型; 狄罗尼三角化(CDT); 道路设计; 计算
- PACS:
- U412.24;U412.33;TP319
- DOI:
- 10.3969/j.issn.1003-7985.2005.01.019
- Abstract:
- To solve the inaccuracy problem caused by the two existing methods(average end-area method and prismoidal method)used for the calculation of roadway earthwork volume, this paper puts forward a new concept of the 3-dimensional algorithm that takes all the roadway geometric design procedures as a kind of geometrical operation between the ground model(original terrain model)and the roadway model(designed model)under certain constraints, and then presents a complete 3-dimensional algorithm of roadway earthwork volume as well as its executable computer program.The algorithm benefits from the re-triangulation technique of constrained delaunay triangulation(CDT), which can yield a true volume value theoretically.Through a number of practical tests covering varied intervals between adjacent cross sections, it is proven to possess a higher accuracy compared with that of traditional methods.All the work involved in this paper indicates that the 3-dimensional calculation of roadway earthwork volume is feasible, more accurate and should have further application in practice.
- 针对目前广泛使用的道路土方量计算方法平均断面法和棱柱体法计算不准确的缺点, 提出了三维土方量计算算法的概念.该算法以带约束的狄罗尼三角化(CDT)为技术核心, 认为所有道路几何设计过程都是地面模型和道路(设计)模型进行几何运算的结果.基于此, 本文设计出相应的算法步骤, 同时完成了相应的软件开发, 使得该三维算法能和传统的方法进行对比.此外, 结合工程实例, 采用了不同的道路横断面间距对三维计算方法和传统方法的误差进行比较、分析.结果证明三维算法具有更好的精度, 该算法可用于道路、场地平整等工程土方量计算.
References:
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[2] Easa S.Estimating earthwork volumes of curved roadways:mathematical model[J].Journal of Transportation Engineering, 1992, 118(6):834-849.
[3] Easa S.Pyramid frustum formula for computing volumes at roadway transition areas [J].Journal of Surveying Engineering, 1991, 117(2):98-101.
[4] Shi Shiyun.Calculating road gross with non-parallel section[J].Bulletin of Surveying and Mapping, 1998(8):26-27.(in Chinese)
[5] Li Fang.Calculation of earthwork and designed cross section in highway alignment optimization [J]. Journal of Xi’an Highway Institute, 1985, 3(2):17-25.(in Chinese)
[6] Li Weimin.Research and application of earthwork calculation software based on digital terrain model [J].Bulletin of Surveying and Mapping, 1998(9):10-12.(in Chinese)
[7] Wang Yujuan, Chen Lijuan, Sun Xiaming.Computational program for earthwork quantity with square grid [J].Journal of Heilongjiang Hydraulic Engineering College, 1995(1):20-25.(in Chinese)
[8] Zhang Jianbo, Liu Xiuguo, Wu Xincai.The application of constrained delaunay TIN in calculation of earthwork[J].Bulletin of Surveying and Mapping, 2001(8):22-23.(in Chinese)
Memo
- Memo:
- Biography: Cheng Jianchuan(1966—), male, doctor, associate professor, jccheng@seu.edu.cn.