Parametric Study of Floorbeam Cutouts for Orthotropic Bridge Decks to Determine Shape Factors

The structural response of a steel orthotropic bridge deck is characterized by the complex interaction between its components. In the case of ribs passing continuously through cutouts in the floor beam web, the floor beam exhibits a Vierendeel type truss behavior. This paper presents the results of a parametric study for 10 trapezoidal rib geometries in conjunction with 8 types of floor beam cutouts to determine shape factors. Five rib depths of 200, 250, 300, 350, and 400 mm in conjunction with 3 angles of inclination 10/3, 20/9, and √3 (corresponding to h/h' values of 10/10.44, 10/10.97, and 10/11.55 as defined by AASHTO LFRD Code) are studied. Shape factors were determined as a design aid to engineers. In addition, the results are compared to measured values derived from a full-scale orthotropic plated test specimen, especially intended for this purpose. The comparison results validate the calculation model.

  • Availability:
  • Supplemental Notes:
    • Abstract reprinted with permission from Taylor and Francis
  • Authors:
    • De Corte, Wouter
  • Publication Date: 2009-9


  • English

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  • Accession Number: 01140948
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 29 2009 4:55PM