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D. Bryja, R. Holubowski, "Galerkin Finite Element Modelling and Monte Carlo Solutions for a Railway Bridge with Random Track Ballast", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 21, 2013. doi:10.4203/ccp.102.21

Keywords: railway bridges, GFEM modelling, random track ballast, Monte Carlo simulations, dynamic response analysis.

Summary

An efficient algorithm is proposed for analysing probabilistic characteristics of railway bridge vibrations, with regard to random stiffness and random damping of the track ballast. Stochastic model of the ballast idealized as viscoelastic foundation is formulated. Probabilistic moments of bridge vibrations are obtained by using Monte Carlo method. For simulating vibration samples, an original GFEM computational model of the bridge is suggested, where two approach track sections are taken into account to idealize geometrical infinity of railway track. Extensive numerical analysis is performed for a validation of the proposed bridge model. Standard deviations of the rail and bridge displacements are analysed to estimate the effect of randomly varying ballast stiffness. The results presented demonstrate efficiency of the method.

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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: 102 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: Paper 21 Galerkin Finite Element Modelling and Monte Carlo Solutions for a Railway Bridge with Random Track Ballast D. Bryja and R. Holubowski Institute of Civil Engineering Wroclaw University of Technology, Poland doi:10.4203/ccp.102.21 purchase the full-text of this paper Full Bibliographic Reference for this paper D. Bryja, R. Holubowski, "Galerkin Finite Element Modelling and Monte Carlo Solutions for a Railway Bridge with Random Track Ballast", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 21, 2013. doi:10.4203/ccp.102.21 Keywords: railway bridges, GFEM modelling, random track ballast, Monte Carlo simulations, dynamic response analysis. Summary An efficient algorithm is proposed for analysing probabilistic characteristics of railway bridge vibrations, with regard to random stiffness and random damping of the track ballast. Stochastic model of the ballast idealized as viscoelastic foundation is formulated. Probabilistic moments of bridge vibrations are obtained by using Monte Carlo method. For simulating vibration samples, an original GFEM computational model of the bridge is suggested, where two approach track sections are taken into account to idealize geometrical infinity of railway track. Extensive numerical analysis is performed for a validation of the proposed bridge model. Standard deviations of the rail and bridge displacements are analysed to estimate the effect of randomly varying ballast stiffness. The results presented demonstrate efficiency of the method. purchase the full-text of this paper (price £20) 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 £65 +P&P)
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