Analytical Solution for Skewed Bridges

Abstract:

In this paper, we report on an analytical solution for beam-type skewed highway bridges subjected to truck loading. To confirm the analysis derivation and the solution obtained, the moment and shear responses to the design truck load are acquired using the analytical method for a number of typical US highway bridges and compared with those from numerical finite element method (FEM) analysis. In addition, the lateral distribution factors for moment and shear used in routine design are investigated based on comparison of the analytical approach and FEM. The analytical solution is shown in good agreement with the FEM result. Furthermore, the relevant provisions in the American Association of State Highway Transportation Officials' (AASHTO's) LRFD Bridge Design Specifications are also discussed here for comparison. It is observed that the design code specified load distribution factor may not predict well, especially for shear and/or severe skew.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 1518-1521
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.1518
• Online since: May 2011
• Authors: Pang Jo Chun, Gong Kang Fu
• Keywords: Mindlin Theory, Skewed Bridges, Skewed Plates, Stiffened Plate, Thick Plates

References

[1] AASHTO: Standard Specifications for Highway Bridges, 17th Ed. Washington, DC (2002)

[2] C. Menassa, M. Mabsout, K. Tarhini, K. and G. Frederick: Journal of Bridge Engineering Vol. 12 (2007), p.205

[3] P. Chun and G. Fu: JSCE Journal of Applied Mechanics Vol. 12 (2009), p.15

[4] AASHTO LRFD Bridge Design Specifications: American Association of State Highway and Transportation Officials, Washington D.C. 4th Ed. (2007).

[5] P. Chun: Skewed Bridge Behaviors: Experimental, Analytical, and Numerical Analysis, Ph.D Dissertation in Wayne State University. (2010).