FINITE-ELEMENT ANALYSIS OF BRIDGE DECKS

A FINITE ELEMENT METHOD IS PRESENTED FOR THE ANALYSIS OF BRIDGE DECKS TREATED AS SHELL-TYPE STRUCTURES. THE METHOD CAN BE USED SUCCESSFULLY FOR THE ANALYSIS OF A WIDE VARIETY OF HIGHWAY BRIDGES SUCH AS SLAB-TYPE BRIDGES, BEAM SLAB BRIDGES, BOX GIRDER BRIDGES, AND CURVED BRIDGES. THE DECK IS DISCRETIZED AS AN ASSEMBLAGE OF FLAT TRIANGULAR ELEMENTS. FOUR DIFFERENT ELEMENTS ARE AVAILABLE FOR USE IN THE ANALYSIS. TWO OF THESE ARE IN THE FORM OF A NEW, REFINED TRIANGULAR ELEMENT AND A NEW, REFINED NONPLANAR QUADRILATERAL ELEMENT, AND THE OTHER TWO ELEMENTS ARE A TRIANGULAR ELEMENT AND A QUADRILATERAL ELEMENT WITH LESS REFINEMENT TO STIFFNESS EVALUATION. THE REFINED ELEMENTS ARE SUITABLE FOR USE IN COARSE MESHES TO ANALYZE DECKS WITH SIMPLE GEOMETRY WHILE THE OTHER TWO ELEMENTS MAY BE USED IN FINE MESHES FOR THE ANALYSIS OF DECKS WITH COMPLEX GEOMETRY. A SIX-DEGREE-OF-FREEDOM NODAL POINT DISPLACEMENT SYSTEM IS USED IN THE ANALYSIS. SUCH A SYSTEM IS ENOUGH FOR COMPLETE REPRESENTATION OF THE SHELL PROBLEM AND AT THE SAME TIME PERMITS MESH REFINEMENT FOR REPRESENTATION OF STRUCTURES WITH COMPLEX GEOMETRIES. ORTHOTROPIC MATERIAL PROPERTIES AS WELL AS ELASTIC SUPPORTS ARE CONSIDERED. THE METHOD OFFERS CONSIDERABLE FLEXIBILITY IN EXPRESSING PRACTICAL CASES OF LOADS AND SUPPORT CONDITIONS TOGETHER WITH SIMPLICITY OF THE INPUT DATA. A CONTINUOUS FIVE GIRDER BRIDGE AND A CONTINUOUS BOX GIRDER BRIDGE WERE ANALYZED, AND THE RESULTS ARE COMPARED WITH FOUR EXISTING SOLUTIONS. /AUTHOR/

  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  USA  78712
  • Authors:
    • Abdelraouf, M R
    • Matlock, H
  • Publication Date: 1972-8

Media Info

  • Features: Figures; References;
  • Pagination: 125 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00209896
  • Record Type: Publication
  • Report/Paper Numbers: No 56-28 Res Rept
  • Files: TRIS
  • Created Date: Jun 25 1973 12:00AM