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Research and Development of Railway Alignment Design System Using FreeCAD Software

2021; IOP Publishing; Volume: 719; Issue: 3 Linguagem: Inglês

10.1088/1755-1315/719/3/032009

1755-1307

Huansong Wang, Wenlong Lu, Ruichang Shi, Shengli Yu, Fadong Wu,

3D Modeling in Geospatial Applications

Abstract This paper explores the functional modules of railway alignment design in the open source FreeCAD software, and makes a foundation development for other railway majors in the open source software. The interactive interface is designed by pyside. The geometric elements of the railway alignment, the coordinates of the main point (ZH, HY, YH, HZ, QZ) and the elevation of end or start point in vertical curve are calculated according to the intersection data, so as to realize the design of the horizontal and vertical section for the alignment. OCC interface is accessed through part module to realize the synthesis of railway baseline. Comparing the baseline generated by FreeCAD with the pile-by-pile coordinates of a project bid section, the coordinate error is less than millimeters, which can well meet the needs of railway construction.