THE ANALYTICAL AND EXPERIMENTAL STUDY OF A SIMPLE GIRDER SLAB BRIDGE

RESULTS ARE PRESENTED OF A COMPARISON OF THE BEHAVIOR OF A STEEL GIRDER AND CONCRETE SLAB BRIDGE WITH A THEORETICAL ANALYSIS. THE BRIDGE WAS INSTRUMENTED WITH STRAIN GAGES AND DEFLECTOMETERS, AND AN HS20 TEST VEHICLE WAS PLACED ON NUMEROUS POSITIONS ON THE BRIDGE WHILE STRAINS AND DEFLECTIONS WERE RECORDED. THREE TEST SERIES WERE RUN, INVOLVING 31 TRUCK POSITIONS. THE THEORETICAL ANALYSIS TREATS THE BRIDGE AS A CONTINUOUS ORTHOTROPIC PLATE SUPPORTED BY A SERIES OF FLEXIBLE GIRDERS. TWO TECHNIQUES WERE USED TO SOLVE THE PLATE EQUATION: A SLOPE DEFLECTION TECHNIQUE USING FOURIER SERIES, AND A FINITE DIFFERENCE METHOD. AN ALTERNATE THEORETICAL METHOD, WHICH TRANSFORMED THE BRIDGE INTO AN EQUIVALENT ORTHOTROPIC SLAB, WAS ALSO USED. EXPERIMENTAL AND ANALYTICAL RESULTS COMPARED WELL, BUT ONLY AFTER THE LOAD CARRYING CAPACITY OF CURBS AND PARAPETS WAS INCLUDED IN THE ANALYSIS. /BPR/

• Supplemental Notes:
  • Hpr-1/3/, STATE AW-68-64-46
• Corporate Authors:

  University of Maryland, College Park

  Department of Agricultural and Resource Economics
  College Park, MD  United States  20742

  Maryland State Roads Commission

  ,    

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Sartwell, A D
  • Heins, C P
  • Looney, C T
• Publication Date: 1968-2

Subject/Index Terms

• TRT Terms: Bearing capacity; Concrete; Deflectometers; Finite differences; Fourier series; Girder bridges; Orthotropic; Slabs; Steel; Strain gages; Theory
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00207869
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Jul 1 1994 12:00AM