Influence of track irregularities in the stress levels of the ballasted and ballastless tracks

• Type: Article in International Conference Proceedings Book
• Date: 2018

Authors

Pedro Alves Costa (Author) FEUP; Rui Calçada (Author) FEUP; Ana Ramos (Author) Other; António Gomes Correia (Author) Other

Conference proceedings International

Title: Advances in Environmental Vibration and Transportation Geodynamics - ISEV2018

Pages: 601-612

Indexing

Scopus - 0 Citations

INSPEC

Other information

Authenticus ID: P-00S-677

DOI: 10.1007/978-981-15-2349-6_37

Abstract (EN): The ballasted and ballastless tracks present substantial differences in terms of the structural configuration and mechanical behaviour. In order to better understand the foundation performance, numerical analysis of the two types of railway track was carried out, computing the stress paths induced by the passage of trains. In this analysis, the effects of the quasi-static and dynamic mechanisms are taken into account in order to highlight their relevance as function of the geometrical track quality for ballasted and ballastless tracks. This study pretends to analyse the influence of the track irregularities in the response of the railway structures (in terms of stress levels). In order to understand the effect of this factor on the performance of the railway tracks, three ranges of wavelengths were defined, associated with three irregularities profiles. The numerical framework adopted in the present study is based on a 2.5D FEM-PML approach for the track-ground simulation, while the rolling stock is modelled using a simple multi-body approach. © Springer Nature Singapore Pte Ltd. 2020.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12