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P. Alves Costa, P. Amado-Mendes, L.M.C. Godinho, P. Lopes, "Prediction of Vibrations due to Underground Railway Traffic through a 2.5 D MFS-FEM Approach", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 188, 2016. doi:10.4203/ccp.110.188

Keywords: wave propagation, numerical modelling, finite element, method of fundamental solutions, tunnel-ground interaction, railway traffic.

Summary

Engineering problems involving soil vibration generated by transportation means have received particular attention from researchers, attempting to accurately reproduce field conditions and to predict the vibrational effects of trains or road vehicles. The particular case of vibration from underground trains is quite complex as a result of the vast dimensions of the domain. However, since the tunnel can be seen as a longitudinally invariant structure, a two and half dimensional approach can be applied, minimizing the computational requirements without losing the three-dimensional character of the problem. Following that approach, a global numerical strategy that allows simulating the vehicle-track-tunnel-soil interaction is proposed here. Tunnel-soil interaction is accounted by coupling the finite element method and the method of fundamental solutions, and this model can be then linked with a train-track interaction model, enabling simulation of the complete process of vibration propagation from the vehicle to the soil. The model is verified against reference solutions, and its application is illustrated for a practical engineering problem. The presented results indicate that the method can be accurate and quite competitive, when compared with other currently available models.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 188 Prediction of Vibrations due to Underground Railway Traffic through a 2.5 D MFS-FEM Approach P. Alves Costa¹, P. Amado-Mendes², L.M.C. Godinho² and P. Lopes¹ ¹FEUP - University of Porto, Faculty of Engineering, Portugal ²Department of Civil Engineering, University of Coimbra, Portugal doi:10.4203/ccp.110.188 purchase the full-text of this paper Full Bibliographic Reference for this paper P. Alves Costa, P. Amado-Mendes, L.M.C. Godinho, P. Lopes, "Prediction of Vibrations due to Underground Railway Traffic through a 2.5 D MFS-FEM Approach", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 188, 2016. doi:10.4203/ccp.110.188 Keywords: wave propagation, numerical modelling, finite element, method of fundamental solutions, tunnel-ground interaction, railway traffic. Summary Engineering problems involving soil vibration generated by transportation means have received particular attention from researchers, attempting to accurately reproduce field conditions and to predict the vibrational effects of trains or road vehicles. The particular case of vibration from underground trains is quite complex as a result of the vast dimensions of the domain. However, since the tunnel can be seen as a longitudinally invariant structure, a two and half dimensional approach can be applied, minimizing the computational requirements without losing the three-dimensional character of the problem. Following that approach, a global numerical strategy that allows simulating the vehicle-track-tunnel-soil interaction is proposed here. Tunnel-soil interaction is accounted by coupling the finite element method and the method of fundamental solutions, and this model can be then linked with a train-track interaction model, enabling simulation of the complete process of vibration propagation from the vehicle to the soil. The model is verified against reference solutions, and its application is illustrated for a practical engineering problem. The presented results indicate that the method can be accurate and quite competitive, when compared with other currently available models. purchase the full-text of this paper (price £22) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £85 +P&P)
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