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Editorial

Editorial Bridge Structures 6 (2010) 81–82 DOI:10.3233/BRS-2010-014 IOS Press This issue of Bridge Structures leads off with a paper, by Reza Rahai and Shokoohfar on “Shear capacity of continuous pre-stressed concrete bridge girders with different static systems through vertical prestressing”. Several models of prestressed concrete beams are selected and analyzed using the finite-element method. The validity of modeling is evaluated based on some test performed on an existing bridge girder in Switzerland. In the second part of the study several beam specimens are built and tested and their load-deformation curve and cracking pattern are studied. Using all numerical and experimental studies, the slope of shear cracks and shear reinforcement ratio are investigated and the effect of horizontal and vertical pre-stressing on the noted parameters is evaluated. Masonry arch bridges represent one of the oldest forms of bridge construction in the world. In “Condition assessment of multi span masonry arch bridges,” Karunananda et al. present a reliability-based condition assessment procedure of multi span masonry arch bridges. Considering axle load as assessment criterion, safety margins (limit state functions) are introduced for each arch of the bridge. The introduced safety margins consist of two variables: Provisional axle load (PAL), which is estimated http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures iospress

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Publisher
IOS Press
Copyright
Copyright © 2010 by IOS Press, Inc
ISSN
1573-2487
eISSN
1744-8999
DOI
10.3233/BRS-2010-014
Publisher site
See Article on Publisher Site

Abstract

Bridge Structures 6 (2010) 81–82 DOI:10.3233/BRS-2010-014 IOS Press This issue of Bridge Structures leads off with a paper, by Reza Rahai and Shokoohfar on “Shear capacity of continuous pre-stressed concrete bridge girders with different static systems through vertical prestressing”. Several models of prestressed concrete beams are selected and analyzed using the finite-element method. The validity of modeling is evaluated based on some test performed on an existing bridge girder in Switzerland. In the second part of the study several beam specimens are built and tested and their load-deformation curve and cracking pattern are studied. Using all numerical and experimental studies, the slope of shear cracks and shear reinforcement ratio are investigated and the effect of horizontal and vertical pre-stressing on the noted parameters is evaluated. Masonry arch bridges represent one of the oldest forms of bridge construction in the world. In “Condition assessment of multi span masonry arch bridges,” Karunananda et al. present a reliability-based condition assessment procedure of multi span masonry arch bridges. Considering axle load as assessment criterion, safety margins (limit state functions) are introduced for each arch of the bridge. The introduced safety margins consist of two variables: Provisional axle load (PAL), which is estimated

Journal

Bridge Structuresiospress

Published: Jan 1, 2010

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