Torsional Design of Hybrid Concrete Box Girders
Publication: Journal of Bridge Engineering
Volume 11, Issue 3
Abstract
Hybrid concrete box-girder bridges that include prestressed slabs and corrugated steel webs provide a major improvement over traditional prestressed concrete box-girder bridges. To reduce the self-weight, high strength concrete is used for the top and bottom slabs and corrugated steel webs are employed for the webs. Because the weight of the girders has been reduced, the span length can be increased for more cost-effective design. A series of systematic tests on hybrid concrete box girders subjected to torsion has been performed. According to the test results, an analytical model was developed. Using the developed analytical model, a step-by-step procedure for torsional design of such bridges is presented in this article. Based on the design procedure proposed, a girder is designed by the analytical model and checked to satisfy structural codes.
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Acknowledgments
The experimental data used as the basis of the design procedure presented in this paper was collected from the National Center for Research on Earthquake Engineering (NCREE) in Taiwan. The opportunity for collecting these data was funded by a grant from the National Science Foundation (NSF) for the 2002 Summer Program in Taiwan.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 11 • Issue 3 • May 2006
Pages: 329 - 339
Copyright
© 2006 ASCE.
History
Received: Apr 6, 2004
Accepted: Apr 8, 2005
Published online: May 1, 2006
Published in print: May 2006
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