中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2019, Vol. 38 ›› Issue (08): 65-69.DOI: 10.3969/j.issn.1674-0696.2019.08.11

• 道路与铁道工程 • 上一篇    下一篇

基于TIN模型的三角形微分土石方计算方法研究

李华蓉1,2 , 陈涛1,2   

  1. (1. 重庆交通大学 交通土建工程材料国家地方联合工程实验室,重庆 400074; 2. 重庆交通大学 土木工程学院,重庆 400074)
  • 收稿日期:2018-01-08 修回日期:2018-10-24 出版日期:2019-08-01 发布日期:2019-08-01
  • 作者简介:李华蓉(1980—),女,湖北宜昌人,副教授,博士,主要从事地图学与地理信息系统方面的研究。E-mail:lihuarong.cat@yeah.net。 通信作者:陈涛(1995—),男,重庆人,硕士研究生,主要从事地图学与GIS-T方面的研究。E-mail:chentao.1218@163.com。
  • 基金资助:
    重庆市研究生教育创新基金项目(CYS18212);重庆市教委科学技术研究项目(KJ1600530);重庆交通大学交通土建工程材料国家地方联合工程实验室开放基金资助项目(LHSYS-2016-011)

Calculation Method of Triangular Differential Earthwork Based on TIN Model

LI Huarong1,2 , CHEN Tao1,2   

  1. ((1. National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing 400074, P. R. China; 2. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R. China)
  • Received:2018-01-08 Revised:2018-10-24 Online:2019-08-01 Published:2019-08-01

摘要: 目前常用的DEM土石方算法通过将地形模拟为高度不一的棱柱来计算场地的土石方量。在遇到复杂地形时,单一棱柱对应的填挖情况复杂,需要进行分割运算,不仅会导致地形模拟失真,并且会增加模型计算的复杂度。针对这一情况,基于TIN模型,引入三角形微分思想,将三角形按照一定规则进行分割,通过计算微分三棱柱体积实现土石方的计算。对于该方法,采用C#编程进行试验,并与传统的Grid和TIN方法进行比较,从结果精确性和时间效率进行了分析。研究结果表明:该方法在复杂地形中相较传统算法可进一步提高土石方量的计算精度。

关键词: 道路工程, 不规则三角网(TIN), 三角形微分, 土石方计算

Abstract: At present, the commonly used DEM earthwork algorithm calculates the earthwork volume of the site by simulating the terrain as a prism with different heights. When encountering complex terrain, the filling and excavation of a single prism is complicated and needed to be segmented. This will not only lead to the distortion of terrain simulation, but also increase the complexity of model calculation. In view of the above situation, based on the TIN model, the triangle differential idea was introduced, and the triangle was segmented according to certain rules. Therefore, the calculation of the earthwork was realized by calculating the volume of the differential triangular prism. For the proposed method, C# programming was used to test it and was compared with the traditional Grid and TIN methods. The accuracy and time efficiency of the results were analyzed. The research results show that the proposed method can further improve the calculation accuracy of earthwork volume in complex terrain, compared with traditional algorithms.

Key words: highway engineering, irregular triangulation (TIN), triangular differential, earthwork calculation

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