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Parametric study of floorbeam cutouts for orthotropic bridge decks to determine shape factors

Parametric study of floorbeam cutouts for orthotropic bridge decks to determine shape factors The structural response of a steel orthotropic bridge deck is characterised by the complex interaction between its components. In the case of ribs passing continuously through cutouts in the floor beam web, the floor beam exhibits a Vierendeel type truss behaviour. The paper presents the results of a parametric study for 10 trapezoidal rib geometries in conjunction with eight types of floor beam cutouts to determine shape factors. Five rib depths of 200, 250, 300, 350 and 400 mm in conjunction with three angles of inclination 10/3, 20/9 and √3 (corresponding to h/h’ values of 10/10.44, 10/10.97 and 10/11.55 as defined by AASHTO LFRD Code) are studied. Shape factors were determined as a design aid to engineers. In addition, the results are compared to measured values derived from a full-scale orthotropic plated test specimen, especially intended for this purpose. The comparison results validate the calculation model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures IOS Press

Parametric study of floorbeam cutouts for orthotropic bridge decks to determine shape factors

De Corte, W.
Bridge Structures , Volume 5 (2) – Jan 1, 2009
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11 pages

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Publisher
IOS Press
Copyright
Copyright © 2009 by IOS Press, Inc
ISSN
1573-2487
eISSN
1744-8999
DOI
10.1080/15732480903142518
Publisher site
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Abstract

The structural response of a steel orthotropic bridge deck is characterised by the complex interaction between its components. In the case of ribs passing continuously through cutouts in the floor beam web, the floor beam exhibits a Vierendeel type truss behaviour. The paper presents the results of a parametric study for 10 trapezoidal rib geometries in conjunction with eight types of floor beam cutouts to determine shape factors. Five rib depths of 200, 250, 300, 350 and 400 mm in conjunction with three angles of inclination 10/3, 20/9 and √3 (corresponding to h/h’ values of 10/10.44, 10/10.97 and 10/11.55 as defined by AASHTO LFRD Code) are studied. Shape factors were determined as a design aid to engineers. In addition, the results are compared to measured values derived from a full-scale orthotropic plated test specimen, especially intended for this purpose. The comparison results validate the calculation model.

Journal

Bridge Structures – IOS Press

Published: Jan 1, 2009

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