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Structural Engineering and Mechanics
  Volume 20, Number 1, May10 2005 , pages 123-141

An approach for failure analysis of composite bridge deck systems with openings
Lei Zhao and Vistasp M. Karbhari

    Design details pertaining to the connection between some recently developed fiber reinforced polymer (FRP) composite deck systems and the supporting girders require openings through cells of the deck. This significantly changes the stress distribution in these components. As a result, the conventional assumptions that deck designs are controlled by their stiffness, and not strength, needs a closer examination. This paper proposes an analytical method to investigate the stress states and failure mechanisms using a type of ?lobal-local?modeling perspective, incorporating classical lamination theory and first ply failure criterion with use of appropriate stress concentration factors around the cutouts. The use of a ?meared-stress?approach is presented as a potential means of simplifying certain FRP specific complexities, while still enabling prediction of overall failure.
Key Words
    decks; finite element analysis; cutout; stress concentration; first-ply failure.
Lei Zhao?epartment of Civil and Environmental Engineering, University of Central Florida,Orlando, FL 32816-2450, USA
Vistasp M. Karbhari?epartment of Structural Engineering, University of California San Diego, MC-0085, La Jolla, CA 92093-0085, USA

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