Response of a high-speed train travelling over a long and high-pier viaduct during moderate earthquakes

Autor: José M. Olmos, Miguel Á. Astiz
Přispěvatelé: Universidad Politécnica de Cartagena, Universidad Politécnica de Madrid
Rok vydání: 2022
Předmět:
Zdroj: Bulletin of Earthquake Engineering. 21:2369-2407
ISSN: 1573-1456
1570-761X
DOI: 10.1007/s10518-022-01579-6
Popis: This contribution presents the results of numerical simulations in which a high-pier viaduct under lateral and vertical non-stationary spatially variable seismic ground motions is crossed by an articulated high-speed train at several speeds. The spectral representation method is employed to generate the required number of acceleration time-history series at each support location of the railway viaduct studied. Wave passage, local soil conditions and loss of coherency effects have been accounted for in the simulated ground-motion time histories, with several peak ground accelerations. Train and bridge responses have been obtained by means of a non-linear dynamic interaction multibody and finite element model. An analysis of train running safety indices has been carried out. The properties of earthquakes and train speeds which may cause problems to traffic safety are detailed, as is the train derailment probability. The numerical simulation outcomes show that it is not safe for the train to travel over the studied viaduct in earthquakes with peak ground acceleration equal to 0.03 g and for train speeds above 280 km/h. Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. The first author would like to acknowledge the support for this study provided by European Erasmus + project: 2020-1-ES01-KA203-083262 “Building BIM digital competences for Tertiary VET in the designing and management of construction projects”. www.BIMVET3.eu. This project is co-funded by the Erasmus + Programme of the European Union.
Databáze: OpenAIRE
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