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Editorial

Editorial Bridge Structures 7 (2011) 123–124 DOI:10.3233/BRS-2012-032 IOS Press Construction stages of a cable-stayed bridge are characterized by a sequence in which geometric configurations, restraints and consequently stress and strain patterns vary throughout the construction process. When construction of concrete bridges is made by cantilever method the influence of time-dependent phenomena becomes significant. In their study of “The influence of time-dependent phenomena in segmental construction of concrete cable-stayed bridges”, Arici et al. examine an evaluation of the stay stressing procedures by accounting for creep and shrinkage in cantilever construction of concrete cable-stayed bridges. The authors propose a methodology for stay stressing with the aim of reaching the desired geometric configuration and perform a comparison with classical analyses performed by backward methodology. The paper presents suggestions to designers, in order to minimize time-dependent effects on deck and stay internal forces and to reach an optimal final configuration. Empirical design methods of bridge decks have been adopted by many highway agencies due to the economic benefit of less reinforcement requirements. However, uncharacteristic cracking patterns appeared on several bridges that were designed based on the empirical deck design methods. The most significant cracks identified on those newly constructed bridges are longitudinal cracks http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures IOS Press

Editorial

Mahmoud, Khaled M.
Bridge Structures , Volume 7 (4) – Jan 1, 2011
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Publisher
IOS Press
Copyright
Copyright © 2011 by IOS Press, Inc
ISSN
1573-2487
eISSN
1744-8999
DOI
10.3233/BRS-2012-032
Publisher site
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Abstract

Bridge Structures 7 (2011) 123–124 DOI:10.3233/BRS-2012-032 IOS Press Construction stages of a cable-stayed bridge are characterized by a sequence in which geometric configurations, restraints and consequently stress and strain patterns vary throughout the construction process. When construction of concrete bridges is made by cantilever method the influence of time-dependent phenomena becomes significant. In their study of “The influence of time-dependent phenomena in segmental construction of concrete cable-stayed bridges”, Arici et al. examine an evaluation of the stay stressing procedures by accounting for creep and shrinkage in cantilever construction of concrete cable-stayed bridges. The authors propose a methodology for stay stressing with the aim of reaching the desired geometric configuration and perform a comparison with classical analyses performed by backward methodology. The paper presents suggestions to designers, in order to minimize time-dependent effects on deck and stay internal forces and to reach an optimal final configuration. Empirical design methods of bridge decks have been adopted by many highway agencies due to the economic benefit of less reinforcement requirements. However, uncharacteristic cracking patterns appeared on several bridges that were designed based on the empirical deck design methods. The most significant cracks identified on those newly constructed bridges are longitudinal cracks

Journal

Bridge Structures – IOS Press

Published: Jan 1, 2011

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