Design Optimization of Composite Steel Box Girder in Flexure
Publication: Practice Periodical on Structural Design and Construction
Volume 12, Issue 3
Abstract
Composite girders consisting of concrete deck on built-up girders are frequently used in bridge construction for their economic advantages. The use of composite girders results in a very economical design. Additional savings can be obtained in design and material costs for some members by automating design approaches based on optimization techniques. This paper describes the use of EXCEL Solver to find the minimum weight for a composite trapezoidal box cross section for a two lane bridge. Design aid tables were generated for structural steel Grades 250, 345, 485, and , and different spans varying from . The search for the minimum cross section used in this research satisfies the 17th Edition of the American Association of State Highway and Transportation Officials Specifications—Load Factor Design method.
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References
American Association of State Highway and Transportation Officials (AASHTO). (2002). Standard specifications for highway bridges, 17th Ed., Washington, D.C.
Barker, R. M., and Puckett, J. A. (1997). Design of highway bridges, 2nd Ed., John Wiley and Sons, New York.
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Heins, C. P., and Shyu, J. Y. (1981). “Moment capacity of box girders.” Institute for Physical Science and Technology Report, Univ. of Maryland, College Park, Md.
Larsen, R. W. (2002). Engineering with EXCEL, 2nd Ed., Prentice-Hall, Englewood Cliffs, N.J.
Vanderplaats, G. N. (2001). Numerical optimization techniques for engineering design, 3rd Ed., Vanderplaats Research and Development, Inc., Colorado Springs, Colo.
Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 12 • Issue 3 • August 2007
Pages: 146 - 152
Copyright
© 2007 ASCE.
History
Received: Sep 12, 2005
Accepted: Jul 7, 2006
Published online: Aug 1, 2007
Published in print: Aug 2007
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