A 3D digital modelling method for railway station subgrade based on generalized hexahedron

Yang Xu, Wei Li, Jie Wang, Hao Pu, Zhiliang Zhang, Haiou Shi and Quan Yuan

International Journal of Rail Transportation, 2021, vol. 9, issue 1, 79-99

Abstract: This study aims to propose an efficient modelling method for railway station subgrade based on cross-sectional data. A modelling principle is firstly established to determine the connection relationships between the adjacent cross sections with large differences. And the connected areas between adjacent cross sections are constructed into a solid model based on the method of ‘Generalized Hexahedron’. In addition, the dissection algorithm for the solid model with multi-level topology is studied, realizing the fast cross-section extraction at an arbitrary position. The proposed method is adopted to build a 3D digital subgrade model in a real case study of Ganquan North Station. The results show that the proposed method can realize the efficient modelling and analysis of the digital subgrade model.

Date: 2021
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DOI: 10.1080/23248378.2020.1715853

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