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Fatigue life of short-span reinforced concrete railway bridges

Title
Fatigue life of short-span reinforced concrete railway bridges
Type
Article in International Scientific Journal
Year
2008
Authors
Pimentel, M
(Author)
FEUP
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Bruhwiler, E
(Author)
Other
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Journal
Title: Structural ConcreteImported from Authenticus Search for Journal Publications
Vol. 9
Pages: 215-222
ISSN: 1464-4177
Publisher: Wiley-Blackwell
Indexing
Publicação em ISI Web of Knowledge ISI Web of Knowledge
Scientific classification
CORDIS: Technological sciences > Engineering > Civil engineering
Other information
Authenticus ID: P-007-P9G
Abstract (EN): In this paper a parametric study on the fatigue life of short-span reinforced concrete railway bridges is presented. Only reinforcement steel fatigue damage is considered. The objective of this work is to assess the factors that may have a decisive influence on reinforcement fatigue life, to evaluate the consequences of the increasing traffic loads and to identify the research needs so as to allow more accurate fatigue examinations of existing bridges under more demanding traffic conditions. It is concluded that reinforcement fatigue life is mainly governed by the existence of heavy traffic (freight trains) and that it is highly sensitive both to the axle loads increase and to the accuracy in the reinforcement stress range calculation. It is also shown that the current analysis procedures may suffice for economic design of new bridges, whereas in the case of existing bridges more elaborate analysis procedures may be necessary to prove fatigue safety. © 2008 Thomas Telford and fib.
Language: English
Type (Professor's evaluation): Scientific
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