Geotechnical challenges in very high speed railway tracks. The numerical modelling of critical speed issues

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

Authors

Pedro Alves Costa (Author) FEUP; Aires Colaço (Author) Other

Conference proceedings International

Title: Numerical Methods in Geotechnical Engineering IX: Proceedings of the 9th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2018), June 25-27, 2018, Porto, Portugal

Pages: 1605-1612

9th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE 2018)

Porto, FEUP, June 2018

Indexing

ISI Web of Science

Scopus

Other information

Abstract (EN): Recent railway tracks are being designed for traffic speed larger than 350 km/h. This amazing increase of the traffic speed leads to new geotechnical challenges, since the train speed can achieve values close to the wave propagation velocity in the ground, giving rise to the so called “critical speed problem”. The present paper approaches this problem focusing on geotechnical engineering. The departing point is the theoretical formulation of the critical speed problem of a moving load on the surface of an elastic solid. From the usage of 2.5D detailed models it was possible to understand the influence of the embankment and of slab track properties on the critical speed. © 2018 Taylor & Francis Group, London, UK.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8