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Computers and Concrete
  Volume 1, Number 3, August 2004, pages 355-369

Finite element modeling of slab-on-beam concrete bridge superstructures
Michael D. Patrick and X. Sharon Huo

    This paper presents a study of four finite element techniques that can be used to model slabon-beam highway bridges. The feasibility and correctness of each modeling technique are examined by applying them to a prestressed concrete I-beam bridge and a prestressed concrete box-beam bridge. Other issues related to bridge modeling such as torsional constant, support conditions, and quality control check are studied in detail and discussed in the paper. It is found that, under truck loading, the bending stress distribution in a beam section depends on the modeling technique being utilized. It is observed that the behavior of the bridge superstructure can be better represented when accounting for composite behavior between the supporting beams and slab.
Key Words
    bridges; finite element modeling; modeling techniques; beam offset; torsional constant; support conditions; diaphragm effect; live load distribution factor.
Department of Civil and Environmental Engineering, Tennessee Technological University,rnP.O. Box 5015, Cookeville, TN 38505, U.S.A.

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