Field Testing and Analysis of CRC Deck Girder Bridges
Publication: Journal of Bridge Engineering
Volume 12, Issue 1
Abstract
This paper presents findings of field tests and analysis of two conventionally reinforced concrete (CRC) deck girder bridges designed in the 1950s. The bridges are in-service and exhibit diagonal cracks. Stirrup strains in the bridge girders at high shear regions were used to estimate distribution factors for shear. Impact factors based on the field tests are reported. Comparison of field measured responses with AASHTO factors was performed. Three-dimensional elastic finite-element analysis was employed to model the tested bridges and determine distribution factors specifically for shear. Eight-node shell elements were used to model the decks, diaphragms, bent caps, and girders. Beam elements were used to model columns under the bent caps. The analytically predicted distribution factors were compared with the field test data. Finally, the bridge finite-element models were employed to compare load distribution factors for shear computed using procedures in the AASHTO LRFD and Standard Specifications.
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Acknowledgments
The work presented in this paper was performed as part of a larger research program conducted at Oregon State University for the Oregon Department of Transportation. Mr. Steven M. Soltesz of ODOT coordinated all logistics for the field tests and his help is gratefully appreciated. The writers would like to thank Mr. William C. Farrow III, Mr. James D. Newell, and Mr. Brian S. Nicholas for their assistance in the field testing.
References
American Concrete Institute (ACI). (2002). “Building code requirements for structural concrete.” ACI 318-02, Farmington Hills, Mich.
American Association of State Highway Officials (AASHO). (1953). Standard specifications for highway bridges, 6th Ed., Washington, D.C.
American Association of State Highway and Transportation Officials (AASHTO). (2002). Standard specifications for highway bridges, 17th Ed., Washington, D.C.
American Association of State Highway and Transportation Officials (AASHTO). (2003). LRFD bridge design specifications, 2nd Ed. with Interims, Washington, D.C.
Al-Mahaidi, R., Taplin, G., and Giufre, A. (2000). “Load distribution and shear strength evaluation of an old concrete T-beam bridge.” Transportation Research Record. 1696, Transportation Research Board, Washington, D.C., 52–62.
ANSYS, Inc. (2003). ANSYS user’s manual revision 7.1, Canonsburg, Pa.
Brockenbrough, R. L. (1986). “Distribution factors for curved I-girder bridges.” J. Struct. Eng., 112(10), 2200–2215.
Hays, C. O., Sessions, L. M., and Berry, A. J. (1986). “Further studies on lateral load distribution using a finite-element method.” Transportation Research Record. 1072, Transportation Research Board, Washington, D.C., 6–14.
Higgins, C., et al. (2004). “Assessment methodology for diagonally cracked reinforced concrete deck girders.” Rep. No. FHWA-OR-RD-05-04, Federal Highway Administration, Washington, D.C.
Mabsout, M., Jabakhanji, R., Tarhini, K. M., and Frederick, G. R. (2000). “Finite-element analysis of concrete slab bridges.” Proc., 8th Int. Conf.: Computing in Civil and Building Engineering, 2, 1045–1050.
Mabsout, M., Tarhini, K. M., Jabakhanji, R., and Awwad, E. (2004). “Wheel load distribution in simply supported concrete slab bridges.” J. Bridge Eng., 9(2), 147–155.
Nowak, A. S., Kim, S., and Stankiewicz, P. R. (2000). “Analysis and diagnostic testing of a bridge.” Comput. Struct., 77(1), 91–100.
Oregon Department of Transportation (ODOT). (2002). “Oregon’s bridges 2002.” Salem, Ore., ⟨http://www.odot.state.or.us/tsbbridgepub/PDFs/Senate_05_16_02.pdf⟩ (May 16, 2002).
Stewart, M. G., Rosowsky, D. V., and Val, D. (2001). “Reliability-based bridge assessment using risk-ranking decision analysis.” Struct. Safety, 23(4), 397–405.
Tabsh, S. W., and Tabatabai, M. (2001). “Live load distribution in girder bridges subject to oversized trucks.” J. Bridge Eng., 6(1), 9–16.
Tarhini, K. M., and Frederick, G. R. (1992). “Wheel load distribution in I-girder highway bridges.” J. Struct. Eng., 118(5), 1285–1294.
Zokaie, T., Osterkamp, T. A., and Imbsen, R. A. (1991). “Distribution of wheel loads on highway bridges.” Final Rep. Project No. 12-26/1, National Cooperative Highway Research Program, Transportation Research Board, National Research Council, Washington, D.C.
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© 2007 ASCE.
History
Received: Mar 22, 2005
Accepted: Jun 27, 2005
Published online: Jan 1, 2007
Published in print: Jan 2007
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