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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 108
PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping
Paper 131 Numerical and Experimental Analysis of the Pressure Signature for different High-Speed Trains C. Somaschini, D. Rocchi, P. Schito and G. Tomasini Department of Mechanical Engineering, Politecnico di Milano, Milan, Italy Full Bibliographic Reference for this paper
C. Somaschini, D. Rocchi, P. Schito, G. Tomasini, "Numerical and Experimental Analysis of the Pressure Signature for different High-Speed Trains", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 131, 2015. doi:10.4203/ccp.108.131
Keywords: train-tunnel pressure signature, train crossing, numerical mono-dimensional code, experimental field tests.
Summary
This paper describes a procedure for the validation of numerical codes able to reproduce the pressures in tunnel due to the passage of trains. In the first step, the parameters of the numerical code are set by matching the train-tunnel pressure signature measured during a single-passage of different types of train within the tunnel and in the second step, without changing the parameters, the crossing of two trains is simulated.
Within the paper, the methodology is applied to the numerical mono-dimensional code DB-Tunnel while the experimental data are those collected during an experimental research programme carried out in the tunnel La Fornace, on the Italian high-speed railway from Roma to Firenze. The accuracy of the numerical code estimation is evaluated in terms of the maximum pressure generated in the tunnel by the train passing/crossing because this is the key parameter, according to the TSI standard for railway infrastructures.
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