Influence of soil non-linearity on the dynamic response of high-speed railway tracks

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Pedro Alves Costa (Autor) FEUP; Rui Calcada (Autor) FEUP; Antonio Silva Cardoso (Autor) FEUP; Anders Bodare (Autor) Outra

Revista

Título: Soil Dynamics and Earthquake Engineering

Vol. 30 Nº 4

Páginas: 221-235

ISSN: 0267-7261

Editora: Elsevier

Indexação

ISI Web of Knowledge - 72 Citações

ISI Web of Science

Scopus - 148 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia do ambiente

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-003-858

DOI: 10.1016/j.soildyn.2009.11.002

Abstract (EN): The main objectives of this paper are the evaluation of the relevance of the non-linear behaviour of the soil on the track response and the validation of a methodology, which includes these effects through an equivalent linear analysis. The proposed numerical model is based on 2.5D finite/infinite elements method, Coupled with an iterative procedure ill order to obtain all agreement between the strain levels and the dynamic properties of the materials. In order to validate the model, the case study of Ledsgard was simulated, and the experimental and numerical results of displacements of the track were compared, considering several Circulation speeds for the X2000 train. From the results, it is possible to recognize that the stiffness degradation, function of the strain level plays a relevant role for the case of, high-speed railway lines oil Soft ground. Moreover, the simulations developed with the proposed methodology provided similar results to those observed, independently of the train speed, contrary to what was obtained when the elastic linear model was used.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15