A 3D digital modelling method for railway station subgrade based on generalized hexahedron. Issue 1 (2nd January 2021)

• Record Type: Journal Article
• Authors: Xu, Yang; Li, Wei; Wang, Jie; Pu, Hao; Zhang, Zhiliang; Shi, Haiou; Yuan, Quan
• Is Part Of: International journal of rail transportation. Volume 9:Issue 1(2021)
• Page Start: 79
• Page End: 99
• Publication Date: 2021-01-02
• Subjects: Railway station subgrade -- 3d digital modelling -- modelling principle -- generalized hexahedron -- information extraction; Railroads -- Periodicals; Railroads; Periodicals; 385
• DOI: 10.1080/23248378.2020.1715853
• Languages: English
• ISSNs: 2324-8378

Abstract

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.