THEORETICAL ANALYSIS OF LOAD DISTRIBUTION IN PRESTRESSED CONCRETE BOX-BEAM BRIDGES

THIS INVESTIGATION IS A THEORETICAL STUDY OF THE VEHICULAR LOAD DISTRIBUTION IN SPREAD BOX-BEAM BRIDGES. THE BOX-BEAM BRIDGE SUPERSTRUCTURES ARE COMPOSED OF A NUMBER OF PRECAST, PRESTRESSED CONCRETE BOX-BEAMS, EQUALLY SPACED AND SPREAD APART, AND A CAST-IN-PLACE COMPOSITE SLAB. A METHOD OF ANALYSIS IS DEVELOPED FOR BEAM-SLAB BRIDGES, AND IS PARTICULARLY APPLIED TO SPREAD BOX-BEAM BRIDGES. IN THIS METHOD, THE BRIDGE SUPERSTRUCTURE IS REDUCED TO AN ARTICULATED STRUCTURE BY INTRODUCING A SERIES OF BEAM AND PLATE ELEMENTS. THE VALIDITY OF THE THEORETICAL ANALYSIS IS VERIFIED BY COMPARISON WITH THE RESULTS OF FIELD TESTS ON FOUR DIFFERENT SPREAD BOX-BEAM BRIDGES. AN EXTENSIVE STUDY OF ALL THE PARAMETERS INVOLVED IN THE ANALYSIS HAS BEEN MADE. OVER THREE HUNDRED DIFFERENT SPREAD BOX-BEAM BRIDGES ARE ANALYZED UNDER DIFFERENT TYPES OF LOADING IN ORDER TO OBSERVE THE PATTERN OF LIVE-LOAD DISTRIBUTION. BASED UPON THE RESULTS OBTAINED, DESIGN PROCEDURES FOR THE DETERMINATION OF LATERAL LIVE-LOAD DISTRIBUTION ARE DEVELOPED AND RECOMMENDED. /AUTHOR/

• Supplemental Notes:
  • Report No 315.9, 156 PP, 53 FIG, 29 REF, 2 APP
• Corporate Authors:

  Lehigh University

  Fritz Engineering Laboratory
  Bethlehem, PA  United States  18015
• Authors:
  • Motarjemi, D
  • VanHorn, D A
• Publication Date: 1969-10

Subject/Index Terms

• TRT Terms: Beams; Box beams; Bridge construction; Bridge foundations; Bridge superstructures; Bridges; Cast in place structures; Composite materials; Construction; Field tests; Live loads; Load transfer; Motion; Motor vehicles; Precast concrete; Prestressed concrete; Prestressing; Slabs; Theory
• Uncontrolled Terms: Moving vehicles
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00209122
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 9 1970 12:00AM