Modelling of the quasi-static and dynamic mechanisms on ballasted and ballastless tracks

• Type: Article in International Conference Proceedings Book
• Date: 2023

Authors

Ramos, A (Author) Other; Correia, AG (Author) Other; Rui Calçada (Author) FEUP

Conference proceedings International

Title: Transportation Research Procedia

Pages: 210-217

2022 Conference Proceedings Transport Research Arena, TRA Lisbon 2022

Lisboa, 14 November 2022 through 17 November 2022

Indexing

Scopus

Other information

Authenticus ID: P-00Z-VTD

DOI: 10.1016/j.trpro.2023.11.396

Abstract (EN): The evaluation of the short and long-term performance of the railways' infrastructure can have vital importance on the track maintenance operations. This work presents a hybrid methodology capable of simulating the strebes induced in the subgrade and predicting the permanent deformations induced by the passage of the trains. The strebes are obtained using the 2.5D FEM-PML approach, while the permanent deformations and cumulative displacements are obtained through the implementation of an empirical permanent deformation model. This methodology allows obtaining the short and long-term results very expeditiously. This work also evaluates the importance of the dynamic effects on the strebes and permanent deformations and compares the performance of the conventional ballasted track, ballastless track (Rheda system) and an optimised ballastless track constituted only by a concrete slab. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0)

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7