Abstract：Research purposes: This paper researched earthwork quantities automatic statistics for railway roadbed cross section based on spatial analysis. In the traditional railway design，the cross-sectional statistical earthwork rely entirely on artificial measure，which is inefficient，difficult to ensure accuracy，and cannot meet the design requirements， therefore，it is necessary to carry out a cross-sectional earthwork intelligent statistical research. Firstly，in order to accurately extract the classification of each section of the soil，the paper realized parameter identification for every object. After graphical preprocessing, the spatial analysis tracking method was adopted to search the smallest closed encirclement by counterclockwise for every section of soil classification，at the same time to search the greatest closed encirclement by counterclockwise for the whole earthwork quantities，calculating the areas for all closed encirclement with calculus. In the end，the earthwork quantities were output automatically，and formed a unified and standardized excel.
Research conclusions: (1)The method was applied in the preliminary design and construction design stage of many railway projects，which was verified in engineering practice. The recognition and statistical accuracy of the roadbed cross section is above 90%.(2)The method solved the problem of earthwork quantities automatic statistics effectively， improved the efficiency and accuracy of statistics，and can be used in the production design on the basis of article pretreatment and calibration. The software which is extracted from the study is widely used in railway engineering design.
韩元利. 基于空间分析的铁路横断面土方数量自动统计[J]. 铁道工程学报, 2014, 31(8): 32-36.
HAN Yuan-li. Automatic Statistics for Earthwork Quantities of Railway Cross Section Based on Spatial Analysis. 铁道工程学报, 2014, 31(8): 32-36.
Zhang Shaobo. Introduction of Using Computer and PC- 1500 Conducted a Cross-sectional Design Program Roadbed[J].Railway Standard Design,1988(2):15- 21.
[3]王金炎.确定路基横断面填挖面积的一个新方法[J]. 公路，1964(9);36-40.
Wang Jinyna. A New Method for Determining the Area of Cut and Fill Roadbed Cross Section[J].Highway , 1964(9);36-40.
Zhang Xinbing, Zhang Juwen. The Design of "holographic" Transverse Section of Subgrade by Card/1 [J].Journal of Railway Science and Engineering, 2012 (1) ;1-5.
[5]王亚飞.交互式路基横断面辅助设计[J].铁道工程学报，2012(11);1-5.
Wang Yafei. Aided Design of Cross Section of Interactive Subgrade [J].Journal of Railway Engineering Society, 2012(11) ;1-5.
[6]唐伟其.基于自定义实体技术的公路路基横断面设计 [D].长沙:中南大学，2009.
Tang Weiqi. Cross-sectional Design of Highway Subgrade Based on Custom Entity Technology[D]. Changsha; Central South University ,2009.
Wang Weidong, Zhan Zhenyan. Database Construction and Road Cross Section Computer Aided Design[J]. Journal of Central South University of Technology (Natural Science ) , 2002 ( 5 ) ; 462-465.
2014, Vol. 31 
版权所有 © 2014 《铁道工程学报》编辑部