Francisco Zarate^1,2, Juan Jose Cuellar³, MIGUEL SANTANA⁴, JAQUELINE MATA SAAVEDRA

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.38, No.1, pp. 1-9, 2022, DOI:10.23967/j.rimni.2022.03.003 - 07 March 2022

Abstract The objectives of this work are focused on giving an answer to the problems presented in the operation of a railway bridge, using the FEM-DEM numerical technique considering static and dynamic loads. The purpose is to find out the existing breakage mechanisms in the bridge.
From a social aspect, there is concern about the possible collapse of the bridge, with the corresponding economic loss and eventually human losses; therefore, the interest and social involvement of the study has repercussions not only on the repair mechanisms that can be adopted but also on the possible revision of… More >

J.C. Sánchez‐Quesada¹, A. Romero2, P. Galvín^2,3, E. Moliner¹, M.D. Martínez‐ Rodrigo^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.24, No.1, pp. 1-1, 2022, DOI:10.32604/icces.2022.08691

Abstract This paper is devoted to track-bridge interaction phenomena in railway bridges of short simply-supported (SS) spans composed by ballasted tracks. These structures may experience high vertical acceleration levels under operating conditions. In particular, the coupling effect exerted by the ballast track shared by structural parts that are theoretically independent, such as consecutive simply-supported spans or twin adjacent single-track decks, is investigated. Experimental evidence shows that in these cases there may be an important vibration transmission from the loaded to the unloaded track, and that the interlocked ballast granules couple some of the lowest modes of… More >

Wei Guo^1,2, Chen Zeng^1,2, Hongye Gou^3,*, Yao Hu^1,2, Hengchao Xu⁴, Longlong Guo^1,2

CMES-Computer Modeling in Engineering & Sciences, Vol.120, No.3, pp. 491-515, 2019, DOI:10.32604/cmes.2019.06162

Abstract CRTS-II slab ballastless track on bridge is a unique system in China high speed railway. The application of longitudinal continuous track system has obviously changed dynamic characteristics of bridge structure. The bridge system and CRTS-II track system form a complex nonlinear system. To investigate the seismic response of high speed railway (HSR) simply supported bridge-track system, nonlinear models of three-span simply supported bridge with piers of different height and CRTS-II slab ballastless track system are established. By seismic analysis, it is found that shear alveolar in CRTS-II track system is more prone to be damaged… More >