A thin-walled box beam finite element for curved bridge analysis |
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Authors: | S H Zhang |
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Affiliation: | Research Institute of the Ministry of Communications, China Finite Element Analysis Ltd, 25 Holborn Viaduct, London, EC1A 2BP, England |
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Abstract: | Practical design of single and multispan curved bridges requires an analysis procedure which is easy and economical to use, and provides a physical insight into structural response under general loading conditions. In the work presented, the thin-walled beam theory has been directly combined with the finite element technique to provide a new thin-walled box beam element. The beam element includes three extra degrees-of-freedom over the normal six degrees-of-freedom beam formulation, to take into account the warping and distortional effects as well as shear. The beam may be curved in space and variable cross-sections may be included. The performance of the box beam element has been compared favourably against results obtained from full 3D shell element analysis, differential equation solutions and experimental results. |
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