DYNAMIC TESTS ON A ROLLED-BEAMED COMPOSITE CONTINUOUS SPAN BRIDGE

THE REPORT DESCRIBES FIELD STUDIES CONDUCTED COOPERATIVELY BY THE STATE AND THE /THEN/ PHYSICAL RESEARCH DIVISION OF THE BUREAU OF PUBLIC ROADS. THE PRIMARY OBJECTIVE WAS TO MEASURE ACTUAL DYNAMIC AMPLIFICATIONS OF STRAIN AND DEFLECTION IN A TYPICAL 3-SPAN CONTINUOUS COMPOSITE I-BEAM STRUCTURE AND TO COMPARE THE EXPERIMENTAL RESULTS WITH COMPUTED THEORETICAL VALUES. STRAIN AND DEFLECTION GAGES WERE LOCATED AT CRITICAL POINTS ON THE BRIDGE. ACCURATELY WEIGHED AND MEASURED TEST VEHICLES WERE THEN DRIVEN ACROSS THE BRIDGE OVER A WIDE RANGE OF SPEEDS AND LATERAL LANE POSITIONS WHILE DYNAMIC RESPONSES WERE BEING RECORDED. THE THEORETICAL AND EXPERIMENTAL RESULTS COMPARED FAVORABLY. AMPLIFICATIONS OF STRAIN AND DEFLECTION NEVER EXCEEDED 30 PERCENT IN FULLY LOADED MEMBERS. ALL FINDINGS INDICATED THAT DESIGN CONSIDERATIONS FOR THE 3-SPAN CONTINOUS COMPOSITE TYPE OF STRUCTURE WERE ADEQUATE IN THIS INSTANCE. /BPR/

• Supplemental Notes:
  • Hpr, Sep63
• Corporate Authors:

  South Dakota Department of Transportation

  700 East Broadway Avenue
  Pierre, SD  United States  57501
• Authors:
  • Hyde, D
• Publication Date: 1963-9

Subject/Index Terms

• TRT Terms: Alternatives analysis; Beams; Bridge decks; Composite materials; Continuous structures; Deflection; Deflection tests; Dynamic tests; Dynamics; Field studies; I beams; Strain (Mechanics); Strain gages; Testing; Theory; Vehicles
• Uncontrolled Terms: Dynamic characteristics
• Old TRIS Terms: Rolled beam; Strains
• Subject Areas: Bridges and other structures; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00207752
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Oct 1 1994 12:00AM