Efficiency of ballast mats for the reduction of vibrations induced by traffic: A parametric study

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Costa, PA (Author) Other; Lopes, P (Author) Other; Rui Calçada (Author) FEUP; Cardoso, AS (Author) Other

Journal

Title: Civil-Comp Proceedings

Vol. 98

Pages: 1716-1735

ISSN: 1759-3433

Publisher: Civil-Comp Press

Indexing

Scopus - 0 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: P-00Q-SDN

DOI: 10.4203/ccp.98.121

Abstract (EN): This paper presents a numerical study developed in order to understand the dynamic behaviour of ballasted tracks with mats including the train-track-ground interaction. In order to achieve that goal, a case study is modelled by a 2.5D FEM-BEM formulation. A comprehensive approach is presented and the effects of the mat stiffness and location in depth are discussed. The comparison between isolated and non-isolated scenarios allowed concluding that the ballast mat has a dual effect, focusing on the train-track dynamic behaviour and on the reduction of high-frequency vibrations that are transmitted to the ground. Furthermore, it was found that better isolation efficiency can be reached by placing the mat beneath the subballast instead of below the ballast layer. ©Civil-Comp Press, 2012

Language: English

Type (Professor's evaluation): Scientific

Notes: http://toc.proceedings.com/14998webtoc.pdf