BEHAVIOR OF CURVED BOX BEAM BRIDGES. PROGRESS REPORT: THE DESIGN OF CURVED VIADUCTS

THE BEHAVIOR OF SINGLE SPAN CURVED BOX BEAM BRIDGES HAS BEEN PREDICTED BY THE STIFFNESS METHOD. THE BRIDGES CONSIST OF BOX SECTIONS, WHICH ARE COMPOSED OF STEEL WEB AND FLANGE PLATES, IN COMPONENT ACTION WITH A CONCRETE DECK. THE BOX SECTIONS ARE SINGLE UNITS WITH INDIVIDUAL WEBS. VARIATIONS IN (1) GIRDER SPACING, (2) NUMBER OF LANES, (3) NUMBER OF GIRDERS, (4) SPAN LENGTH AND (5) RADIUS WERE CONSIDERED IN THE PARAMETRIC STUDY, RESULTING IN A TOTAL OF NINETY BRIDGE CONFIGURATIONS. THESE BRIDGES WERE THEN LOADED WITH THE AASHO TRUCK, AND THE RESULTING DEFORMATIONS AND FORCES EVALUATED. THE RESULTS OF THESE ANALYSES, GIVE TWO IMPORTANT DESIGN PARAMETERS; (1) LATERAL LOAD DISTRIBUTION FACTORS, (2) MODIFICATION FACTORS, WHICH ARE PRESENTED IN A SERIES OF TABLES. THE DISTRIBUTION FACTORS, (N), ARE USED IN DESCRIBING THE PROPORTION OF WHEEL LOADS TO A GIVEN GIRDER. THE MODIFICATION FACTORS ARE USED TO DETERMINE THE INDUCED BENDING AND TORSIONAL FORCES RELATIVE TO THE MAXIMUM SIMPLE BEAM MOVEMENT ON A STRAIGHT GIRDER. THE DESIGN OF A TYPICAL CURVED BOX BEAM BRIDGE, IS ALSO PRESENTED IN DETAIL. /AUTHOR/

  • Corporate Authors:

    University of Maryland, College Park

    Department of Civil and Environmental Engineering
    College Park, MD  USA  20742
  • Authors:
    • Ho, Y S
    • Reilly, R J
  • Publication Date: 1971-6

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 55 p.
  • Serial:
    • Issue Number: 41

Subject/Index Terms

Filing Info

  • Accession Number: 00209722
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 3 1972 12:00AM