Experimental Study of Tubular Flange Girders
Publication: Journal of Structural Engineering
Volume 134, Issue 3
Abstract
The behavior of I-shaped steel girders with flanges made from concrete-filled tubes is investigated experimentally, focusing on concrete-filled tubular flange girders (CFTFGs) in positive bending regions where the concrete-filled tube is the compression flange. The investigation included CFTFGs that are either composite or noncomposite with a concrete deck. For the composite CFTFGs, girders with rectangular tubes and either a flat web or a corrugated web are studied, and for the noncomposite CFTFGs, girders with round tubes and flat webs are studied. The objectives are: (1) to provide experimental data demonstrating the load carrying capability of CFTFGs and the advantages of CFTFGs over conventional I-girders; and (2) to verify the adequacy of analytical models by comparing experimental and analytical results. The experimental results demonstrate the improved lateral torsional buckling capacity of CFTFGs, and their capability to carry factored design loads under construction conditions and in the final constructed condition. The comparison between experimental and analytical results shows the adequacy of simple analytical models for CFTFGs.
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Acknowledgments
This research was sponsored by the Federal Highway Administration (FHwA) and the Pennsylvania Infrastructure Technology Alliance (PITA) through a grant from Pennsylvania Department of Community and Economic Development. The findings, opinions, and conclusions expressed in the paper are the writers’ and do not necessarily reflect the opinions of those acknowledged here.
References
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Wassef, W. G., Ritchie, P. A., and Kulicki, J. M. (1997). “Girders with corrugated webs and tubular flanges—An innovative bridge system.” Proc., 14th Annual Meeting, Int. Bridge Conf., Pittsburgh, 425–432.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 134 • Issue 3 • March 2008
Pages: 384 - 392
Copyright
© 2008 ASCE.
History
Received: May 8, 2006
Accepted: May 21, 2007
Published online: Mar 1, 2008
Published in print: Mar 2008
Notes
Note. Associate Editor: Donald W. White
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