INDUCED DYNAMICS STRAINS IN BRIDGE STRUCTURES DUE TO RANDOM TRUCK LOADINGS

RESULTS ARE PRESENTED OF MOVING LOAD TESTS ON TWO HIGHWAY BRIDGES IN MARYLAND. BOTH STRUCTURES WERE STEEL STRINGER AND CONCRETE SLAB BRIDGES. STRAINS PRODUCED BY CONTROLLED LOADINGS CAUSED BY A SPECIAL TEST VEHICLE, AS WELL AS STRAINS CAUSED BY COMMERCIAL TRUCK TRAFFIC, WERE MONITORED AND RECORDED. IN CONNECTION WITH A LOADOMETER SURVEY, SELECTED COMMERCIAL VEHICLES WERE WEIGHED AND CLASSIFIED. RESULTS ARE PRESENTED AS STRESS HISTOGRAMS FOR EACH VEHICLE TYPE CLASSIFICATION. THE RESULTS INDICATE THAT TYPE 3 TRUCKS (A FRONT AXLE AND A TANDEM REAR AXLE, ALL ON ONE FRAME) PRODUCED THE HIGHEST STRESS RANGES IN BOTH STRUCTURES. THE STRESS RANGES PRODUCED BY ALL COMMERCIAL VEHICLES WERE ALWAYS BELOW THE CALCULATED MAXIMUM DESIGN STRESSES BASED ON THE AASHO BRIDGE SPECIFICATIONS. /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:
  • Novak, M E
  • Heins, C P
  • Looney, C T
• Publication Date: 1968-2

Subject/Index Terms

• TRT Terms: Axle load force; Axles; Commercial vehicles; Concrete; Dynamic loads; Highway bridges; Load tests; Loadometers; Motion; Motor vehicles; Slabs; Steel; Stresses; Stringers; Tandem axle loads; Testing; Trucks
• Uncontrolled Terms: Moving vehicles
• Old TRIS Terms: Tandem axles
• Subject Areas: Bridges and other structures; Highways; Motor Carriers;

Filing Info

• Accession Number: 00207868
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Jul 1 1994 12:00AM