LOAD BALANCING ANALYSIS OF CABLE STAYED BRIDGES

THE CABLE STAYED BRIDGE IS A STRUCTURE WELL SUITED FOR LOAD BALANCING, THAT IS FOR REDUCTION OF BENDING MOMENTS AND DISPLACEMENTS THROUGHOUT THE STRUCTURE BY POST-TENSIONING THE CABLES. THE PROBLEM WAS APPROACHED FIRST FROM THE POINT OF VIEW OF REDUCING BENDING MOMENTS. A PROCEDURE WAS DEVELOPED TO ACHIEVE THIS REDUCTION. THE FIRST STEP CONSISTS OF DETERMINING THE BENDING MOMENTS DUE TO A UNIT FORCE APPLIED SUCCESSIVELY ALONG EACH CABLE OF THE BRIDGE SYSTEM. NEXT, A SYSTEM OF EQUATIONS IS WRITTEN TO EXPRESS THE CONDITION THAT THE SUM OF THE BENDING MOMENTS DUE TO UNKNOWN POST-TENSIONING FORCES IN THE CABLES, SHALL BE OPPOSITE IN SIGN AND EQUAL TO A FRACTION OF THE BENDING MOMENT CAUSED BY THE ACTION OF THE DEAD LOAD. BY SOLVING THIS SYSTEM OF EQUATIONS, THE POST-TENSIONING FORCES IN CABLES ARE DETERMINED. A COMPUTER PROGRAM WAS WRITTEN IN FORTRAN LANGUAGE TO CARRY OUT THE COMPUTATIONS. /AUTHOR/

  • Supplemental Notes:
    • PROC PAPER 9122
  • Authors:
    • Lazar, B E
    • Troitsky, M S
    • Douglass, M M
  • Publication Date: 1972-8

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 1725-40
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00209772
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 28 1972 12:00AM