AN APPROACH TO PRELIMINARY DESIGN OF PRECAST PRETENSIONED CONCRETE BRIDGE GIRDERS

This paper presents an approach to the preliminary design of simple span precast pretensioned highway bridge girders using mathematical optimization methods. This type of bridge system is competitive for short and medium spans but also can accommodate long-span bridges if girder splicing and continuity are introduced. The bridge design problem is formulated as a nonlinear programming problem and is solved by the projected lagrangian algorithm. Several design objectives are investigated either separately or simultaneously with the aim of achieving cost-efficient bridge designs. The approach is used to generate a new set of five optimal girder sections and then to determine the girder spacing and span length capability of each precast girder.

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  • Corporate Authors:

    Blackwell Publishing

    350 Main Street
    Malden, MA  United States  02148
  • Authors:
    • Lounis, Z
    • Cohn, M Z
  • Publication Date: 1996-11

Language

  • English

Media Info

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Filing Info

  • Accession Number: 00726790
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 2 1996 12:00AM