Wheel Load Distribution in I‐Girder Highway Bridges
Publication: Journal of Structural Engineering
Volume 118, Issue 5
Abstract
This paper presents finite element analyses and modeling techniques of I‐girder highway bridges. A wheel load distribution formula is developed using the results of finite element analysis, which can be used to calculate the flexural stresses in slab‐on‐girder bridges. A typical bridge design was selected, and one parameter was allowed to vary within practical ranges while the remaining parameters were held constant. The parameters considered were the size and spacing of steel girders, presence of cross bracing, concrete slab thickness, span length, single and continuous spans, and composite and noncomposite behavior. The developed wheel load distribution formula is similar in format to the current AASHTO specifications. The results predicted by the formula are compared with recently published research, which highlighted the importance of span length in calculating the wheel load distribution factors. This paper will assist bridge engineers and researchers in modeling and predicting the actual wheel load distribution in highway bridges.
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References
1.
Bakht, B., and Moses, F. (1988). “Lateral distribution factors for highway bridges.” J. Struct. Engrg., ASCE, 114(8), 1785–1803.
2.
Bishara, A. G. (1984). “Analysis for design of bearings at skew bridge support.” Report ODOT 14346, Ohio Department of Transportation, Columbus, Ohio.
3.
Hays, C. O., Jr., Sessions, L. M., and Berry, A. J. (1986). “Further studies on lateral load distribution using finite element methods.” Tramp. Res. Rec, (1072), Transportation Research Board, Washington, D.C., 6–14.
4.
Hays, C. O., Jr., (1990). Discussion of “Lateral distribution factors for highway bridges,” by B. Bakht and F. Moses. J. Struct. Engrg., ASCE 116(3), 868–871.
5.
Imbsen, R. A., and Nutt, R. V. (1978). “Load distribution study on highway bridges using STRUDL F.E.A. capabilities.” Conf. on Computing in Civil Engineering, ASCE, New York, N.Y.
6.
Nutt, R. V., Schamber, R. A., and Zokaie, T. (1988). “Distribution of wheel loads on highway bridges.” Project 12–26, Transportation Research Board, Washington, D.C.
7.
Kok, A. W. M., and Vrijman, C. F. (1985). “Analysis of continuous structures with the FEM.” ICES STRUDL II, ICES‐Users Group Inc., Cranston, R.I.
8.
Kostem, C. N., and DeCastro, E. S. (1977). “Effect of diaphragms on lateral load distribution in beam‐slab bridges.” Tramp. Res. Rec, Bridge Tests, No. 645, 6–9.
9.
Mahmoud, R. F. (1987). “Experimental and analytical investigation of concrete deck on steel beam bridges.” Master's Thesis, The University of Toledo, Toledo, Ohio.
10.
Sanders, W. W., and Elleby, H. A. (1970). “Distribution of wheel load on highway bridges.“Report 83, Transportation Research Board, Washington, D.C.
11.
Standard Specifications for Highway Bridges. (1989). 13th Ed., American Association of State Highway and Transportation Officials, Washington, D.C.
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Copyright © 1992 ASCE.
History
Published online: May 1, 1992
Published in print: May 1992
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