PRACTICAL OPTIMIZATION OF STEEL HIGHWAY BRIDGE BEAMS

A PROGRAM FOR THE OPTIMIZATION OF A ROLLED SECTION HIGHWAY BRIDGE GIRDER IS PRESENTED. THE GIRDER IS DESIGNED BY MINIMIZING EITHER THE WEIGHT OR THE COST. THE COST FUNCTION USED IS A REPRESENTATIVE MODEL OF THE TOTAL COST OF THE GIRDER, INCLUDING BOTH MATERIAL AND FABRICATION COSTS. THE PROGRAM PRODUCES THE OPTIMUM DESIGN OF A ROLLED SECTION GIRDER, USING EITHER COMPOSITE OR NONCOMPOSITE DESIGN THEORY. THE REQUIRED COVER PLATES ARE DETERMINED, USING BOTH STATIC AND FATIGUE STRESS CONDITIONS. THE FATIGUE STRESSES ARE BASED ON 500,000 CYCLES OF STRESS. ALL DESIGN THEORY, ANALYSIS THEORY, AND OPTIMIZATION CONSTRAINTS ARE BASED ON THE 1969 AASHO BRIDGE SPECIFICATIONS. THE METHOD OF INFLUENCE LINES IS USED IN THE ANALYSIS. THE EXHAUSTIVE SEARCH TECHNIQUE IS USED AS THE MAIN METHOD OF OPTIMIZATION. COMPUTER SOLUTIONS FOR TWO PUBLISHED DESIGN EXAMPLES WERE OBTAINED AND COMPARED TO THE PUBLISHED RESULTS. /AUTHOR/

  • Record URL:
  • Supplemental Notes:
    • No 8, 209 pP
  • Corporate Authors:

    Purdue University

    Joint Transportation Research Program, 550 Stadium Mall Drive
    West Lafayette, IN  USA  47907-2051

    Indiana Department of Transportation

    100 N Senate Avenue
    Indianapolis, IN  USA  46204

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Busek, R H
  • Publication Date: 1971-5

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Bibliography; Figures; Tables;
  • Pagination: 233p

Subject/Index Terms

Filing Info

  • Accession Number: 00209528
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/IN/JHRP-71/08, C-36-56Q
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Oct 18 1971 12:00AM