Simplified AASHTO Load and Resistance Factor Design Girder Live Load Distribution in Illinois
Publication: Journal of Bridge Engineering
Volume 9, Issue 6
Abstract
Illinois began full transition to the American Association of State Highway and Transportation Officials load and resistance factor design (LRFD) bridge design specifications from the traditional load factor design code or standard specifications in 2002. To facilitate implementation of the new specification, engineers from the Illinois Department of Transportation undertook a series of investigations. The studies focused on interpretation of LRFD for the design of typical bridges in Illinois and the simplification of its procedures for determination of live load lane distributions to primary superstructure girders. Some important presented results from the conducted investigations are believed not only relevant to bridge design in Illinois, but to other states and jurisdictions which employ or will employ LRFD in the near future. The initial simplifications and interpretations focused on concrete deck-on-steel girder bridges and were subsequently expanded to include concrete deck-on-prestressed concrete girder structures. These types of structures comprise a large portion of Illinois’ inventory. Illinois Department of Transportation engineers continue to build on the studies described in the paper such that policies and procedures for other types of typical bridges can be formulated.
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References
1.
American Association of State Highway and Transportation Officials (AASHTO). (1998). LRFD bridge design specifications, Washington, D.C.
2.
American Institute of Steel Construction (AISC). (2001). Manual of steel construction load and resistance factor design, Chicago.
3.
Foutch, D. A., Tobias, D. H., and Otter, D. E. ( 1996). “Analytical investigation of the longitudinal loads in an open deck through plate girder bridge.” Rep. No. R-894, Association of American Railroads, Pueblo, Colo.
4.
Foutch, D. A., Tobias, D. H., Otter, D. E., LoPresti, J. A., and Uppal, A. S., ( 1997). “Experimental and analytical investigation of the longitudinal loads in an open deck plate girder bridge.” Rep. No. R-905, Association of American Railroads, Pueblo, Colo.
5.
Kulicki, J.M., and Mertz, D.R. ( 1991). “A new live load model for bridge design.” Proc., 8th Ann. Int. Bridge Conf., Engineer’s Society of Western Pennsylvania, Pittsburgh, 238–246.
6.
Timoshenko, S., and Woinowsky-Krieger, S. ( 1959). Theory of plates and shells, McGraw-Hill, New York.
7.
Tobias, D. H., and Foutch, D. A. (1997). “Reliability based method for fatigue evaluation of railway bridges.” J. Bridge Eng., 2, 53–60.
8.
Tobias, D. H., Foutch, D. A. ( 1998). “Analysis of the longitudinal loads transmitted into the FAST AAR test bridge.” Internal Rep., Association of American Railroads, Pueblo, Colo.
9.
Tobias, D. H., Foutch, D. A., Lee, K., Otter, D. E., LoPresti, J. A., and Uppal, A. S. ( 1999). “Experimental and analytical investigation of the longitudinal loads in a multi-span railway bridge.” Rep. No. R-927, Association of American Railroads, Pueblo, Colo.
10.
Zokaie, T., Imbsen, R., Schamber, R., and Osterkamp, J. ( 1992) “Distribution of wheel loads on highway bridges.” National Cooperative Highway Research Program Research Results Digest No. 187, Transportation Research Board, Washington, D.C.
Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 9 • Issue 6 • November 2004
Pages: 606 - 613
Copyright
Copyright © 2004 ASCE.
History
Published online: Oct 15, 2004
Published in print: Nov 2004
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