STRUCTURAL BEHAVIOR OF A PRESTRESSED CONCRETE BOX-BEAM BRIDGE-HAZLETON BRIDGE

THIS REPORT DESCRIBED THE FIELD TESTING OF AN IN- SERVICE BEAM-SLAB HIGHWAY BRIDGE SUPERSTRUCTURE, CONSISTING BASICALLY OF (1) FIVE LONGITUDINAL PRESTRESSED CONCRETE BOX BEAMS, SPREAD APART AS IN TYPICAL I-BEAM CONSTRUCTION, (2) CAST-IN-PLACE SLAB, CURB, AND PARAPET SECTIONS, AND (3) END AND MIDSPAN EXTERIOR DIAPHRAGMS. A TEST VEHICLE, CLOSELY SIMULATING AN AASHO HS 20-44 DESIGN VEHICLE, WAS USED. THE PRINCIPAL OBJECTIVES WERE TO EXPERIMENTALLY INVESTIGATE THE STRUCTURAL RESPONSE OF THE SUPERSTRUCTURE (1) TO THE TEST VEHICLE TRAVELING AT CONSTANT SPEEDS, IN THE RANGE 2 - 60 MPH, AND (2) TO AN IMPACT TEST IN WHICH THE TEST VEHICLE PASSED OVER A RAMP, TWO INCHES IN HEIGHT, AT A SPEED OF 10 MPH, AND (3) TO PROVIDE ADDITIONAL INFORMATION ON THE LATERAL DISTRIBUTION OF STATIC VEHICLE LOADING. FROM THE SPEED RUNS OF THE TEST VEHICLE, IT WAS FOUND THAT THERE WAS A SIGNIFICANT VARIATION IN THE DYNAMIC LOAD FACTORS. THE IMPACT TESTS REVEALED CONSIDERABLE AMPLIFICATION OF STATIC LOAD EFFECTS. THE LATERAL DISTRIBUTION OF THE TEST VEHICLE LOAD WAS MORE UNIFORM IN THE SPEED AND IMPACT RUNS THAN IN THE CRAWL RUNS. /FHWA/

  • Corporate Authors:

    Lehigh University

    Bethlehem, PA  USA  18015

    Pennsylvania Department of Transportation

    1215 Transportation and Safety Building
    Harrisburg, PA  USA  17120
  • Authors:
    • Chen, Y L
    • Van, HORN DA
  • Publication Date: 1970-12

Media Info

  • Pagination: 125 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00208072
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: No 315a.1
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Apr 30 1973 12:00AM