A METHOD FOR THE OPTIMUM DESIGN OF SAMPLE SPAN DECK AND GIRDER HIGHWAY BRIDGES

A TECHNIQUE FOR THE SOLUTION OF AN OPTIMUM DESIGN OF A STANDARD DECK AND GIRDER HIGHWAY BRIDGE IS PRESENTED. THE OPTIMUM DESIGN IS BASED ON A MINIMUM COST CRITERION. THE PROBLEM IS FORMULATED IN A GENERAL WAY SUCH THAT A VARIETY OF GIRDER SHAPES AND NON-PRISMATIC MEMBERS MAY BE TREATED. FORMULATION HAS BEEN MADE FOR WELDED STEEL GIRDERS, ROLLED STEEL SHAPES WITH OR WITHOUT COVER PLATES, PRESTRESSED CONCRETE, AND REINFORCED CONCRETE. AN AUTOMATIC OR MANUAL INITIAL DESIGN IS ASSUMED TO BE GIVEN, FROM WHICH A MATHEMATICAL MODEL IS CREATED. LINEAR PROGRAMMING IS USED TO SOLVE THE MATHEMATICAL MODEL FOR A SET OF CHANGES TO IMPROVE THE INITIAL DESIGN. THE TECHNIQUE ALLOWS THE DESIGNER TO CONTROL ANY OF THE CHOSEN INDEPENDENT DESIGN PARAMETERS AND HAVE THE REMAINING PARAMETERS OPTIMIZED. A SYSTEM OF COMPUTER PROGRAMS DESIGNED TO BECOME A PART OF THE BRIDGE SUBSYSTEMS OF ICES IS DEVELOPED FOR THE GENERAL SOLUTION. THE EFFECTS OF THE FORM OF VARIABLES AND CONVERGENCE AIDS ARE STUDIED. SEVERAL EXAMPLE PROBLEMS INVOLVING STEEL GIRDERS ARE INCLUDED. /AUTHOR/

• Supplemental Notes:
  • Hpr-1/1/, BPR-R-10
• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Civil Engineering, 77 Massachusetts Avenue
  Cambridge, MA  United States  02139

  Massachusetts Department of Public Works

  100 Nashua Street
  Boston, MA  United States  02114
• Authors:
  • Cornell, C A
  • Ho, P K
  • Ehrlich, R A
• Publication Date: 1967-6

Subject/Index Terms

• TRT Terms: Bridge decks; Bridge design; Bridges; Computer programming; Costs; Design; Forming; Girder bridges; Girders; Highway bridges; Linear programming; Mathematical models; Optimization; Prestressed concrete; Reinforced concrete; Shape; Steel; Structural design; Structural plates; Weldments
• Uncontrolled Terms: Plates
• Old TRIS Terms: Cover; Optimum design; Roll forming; Simple span
• Subject Areas: Bridges and other structures; Design; Finance; Highways;

Filing Info

• Accession Number: 00207854
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Jan 16 1994 12:00AM