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.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08859507
• 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

• Pagination: p. 381-393
• Serial:
  • Microcomputers in Civil Engineering
  • Volume: 11
  • Issue Number: 6
  • Publisher: Blackwell Publishing
  • ISSN: 0885-9507

Subject/Index Terms

• TRT Terms: Bridge design; Bridges; Concrete bridges; Girder bridges; Highway bridges; Lagrangian functions; Structural design
• Old TRIS Terms: Spans
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

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