Railways are an important lifeline for mining and industrial based economy such as Australia. Railway tracks traverse a number of difficult terrains across the country such as jointed sandstone rock formations near Sydney region. In an economic point of view, it is necessary to reduce maintenance costs and improve the life span of railway tracks built on fractured or jointed sandstone. To address this issue, a numerical model is developed to simulate the behaviour of jointed rock under the passage of heavy-haul trains using FLAC 3D, and the response of a single joint under a moving axle load was simulated for simplicity. In this study, Barton and Choubey’s method for estimating shear strength of a rock joint was incorporated alongside the existing Coulomb frictional interface in FLAC 3D. The proposed method provides a practical approach to improve the Coulomb frictional interface by including Joint Roughness Coefficient. Further, this method also simulates the evolution of shear and normal stresses distinctly at different locations on the joint surface under train passage. Under a heavy haul train passage, the contours depicting normal stress and the related apparent friction angle are presented.
Numerical Modelling of Jointed Rock Foundation Under Heavy Haul Train Loading
Lecture Notes in Civil Engineering
International Conference on Transportation Geotechnics ; 2024 ; Sydney, NSW, Australia November 20, 2024 - November 22, 2024
Proceedings of the 5th International Conference on Transportation Geotechnics (ICTG) 2024, Volume 6 ; Kapitel : 6 ; 53-60
18.10.2024
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Full-Scale 3D Heavy Haul Train-Track Dynamics Modelling Method
TIBKAT | 2022
|Operation simulator of heavy haul train
Tema Archiv | 1989
|Full-Scale 3D Heavy Haul Train-Track Dynamics Modelling Method
Springer Verlag | 2022
|