Impact of track irregularities and damping on the fatigue damage of a railway bridge deck slab

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Joel Malveiro (Author) Other; Carlos Sousa (Author) FEUP; Diogo Ribeiro (Author) Other; Rui Calçada (Author) FEUP

Journal

Title: Structure and Infrastructure Engineering

Vol. 14 No. 9

Pages: 1257-1268

ISSN: 1573-2479

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 11 Citations

INSPEC

Other information

Authenticus ID: P-00P-0XH

DOI: 10.1080/15732479.2017.1418010

Abstract (EN): The structural response of reinforced concrete slabs in railway bridges is strongly influenced by local dynamic effects and, therefore, detailed calculations of internal forces have to be performed for a realistic fatigue assessment. In this context, this paper discusses the influence of track irregularities and modal damping coefficients in the dynamic response and fatigue behaviour of a railway bridge deck slab. For that purpose, track irregularities were measured (at different instants of time) and damping coefficients were determined based on acceleration records for passing trains in a real bridge. The bridge behaviour was calculated using a train-bridge interaction methodology, considering calibrated numerical models of the viaduct and the train. The fatigue damage was quantified through the linear damage accumulation method. This methodology allowed to understand the way track irregularities and damping coefficients affect the magnitude of applied bending moments and fatigue damage in the slab.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12