FIELD TESTING OF CONCRETE SLAB AND GIRDER BRIDGES

DETAILED RESULTS ARE PRESENTED ON A RESEARCH PROGRAM TO INVESTIGATE THE FEASIBILITY OF LOAD DISTRIBUTION TESTING OF A FULL SCALE REINFORCED CONCRETE BRIDGE STRUCTURE IN THE FIELD AND TO CORRELATE THAT DATA WITH THOSE OBTAINED FROM TESTING OF AN ACCURATE SCALE MODEL. THE FEASIBILITY AND DURABILITY OF A NEW TYPE OF FIELD STRAIN GAGE APPLICATION WAS TESTED, A NEW METHOD FOR FIELD DEFLECTION MEASUREMENT TRIED, AND GENERAL OPERATIONS IN A REMOTE LOCATION EVALUATED. THE RESULTS OBTAINED FROM MULTIPLE LOADINGS OF THE FULL SCALE STRUCTURE WERE COMPARED WITH THOSE FROM A 5.5-SCALE MICROCONCRETE MODEL TESTED IN A LABORATORY. THE RESULTS WERE ALSO COMPARED WITH SIMILAR LABORATORY TESTED MODELS DIFFERING ONLY IN SKEW ANGLE AND DESIGN LOADING. BECAUSE OF EXPENSES OF BOTH FIELD AND COMPARISON MODEL TESTING, ONLY ONE FULL SCALE STRUCTURE WAS TESTED. TO ENSURE ACCURATE RESULTS, EXTENSIVE PRETESTING WAS DONE TO ELIMINATE FAULTY MATERIALS OR METHODS. THIS WAS ESPECIALLY TRUE FOR STRAIN GAGE APPLICATION AND TESTING. TESTS BEAMS WERE DESIGNED, CAST, AND TESTED TO DESTRUCTION TO DETERMINE THE ACCURACY AND DURABILITY OF THE STRAIN GAGES. AS MUCH EQUIPMENT AS POSSIBLE WAS SHOP FABRICATED FOR EASY FIELD ASSEMBLY TO MINIMIZE WASTAGE OF TIME AND MONEY. THESE TEST RESULTS WERE ALSO COMPARED WITH EXISTING AASHO DESIGN SPECIFICATIONS. RECOMMENDATIONS ARE MADE FOR REVISIONS IN DESIGN CRITERIA, AND IMPROVEMENTS IN BOTH MODEL AND FULL SCALE FIELD TESTING. /AUTHOR/

  • Supplemental Notes:
    • Research RePT NO 94-2, 71 PP, 31 FIG, 4 TAB, 12 REF, 1 APP
  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  USA  78712
  • Authors:
    • Armstrong, T A
    • Leyendecker, E V
    • Breen, J E
  • Publication Date: 1969-7

Subject/Index Terms

Filing Info

  • Accession Number: 00209450
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 2 1971 12:00AM