LIVE LOAD STRESS MEASUREMENTS ON THE FORT LOUDON BRIDGE, PENNSYLVANIA

IN TESTING A LOW TRUSS STEEL BRIDGE, EIGHT TEST VEHICLES WERE USED RANGING FROM A TWO-AXLE 27,830-LB. TRUCK TO A FIVE-AXLE 150,000-LB. TANK TRANSPORTER. THE BRIDGE HAD A SPAN OF 110 FT. 8 IN. BETWEEN CENTERS OF BEARING. ELECTRO-MAGNETIC GAGES WERE USED, AND DURING EACH RUN OF A TEST VEHICLE, 24 SIMULTANEOUS STRESSES WERE RECORDED. FIGURES ARE PRESENTED FOR TYPICAL TRUSS MEMBERS, SHOWING STATIC STRESSES, IMPACT STRESSES AT VARIOUS SPEEDS AND SECONDARY STRESSES. DATA ARE PRESENTED ON VERTICAL AND TRANSVERSE HORIZONTAL TRUSS DEFLECTIONS AT THE CENTER OF THE SPAN AND STRESSES IN THE FLOOR SYSTEM ARE DISCUSSED. WHILE THESE DATA APPLY ONLY TO THE PARTICULAR BRIDGE TESTED, IT IS BELIEVED THAT THE RESULTS WILL HAVE SOME BEARING ON THE DESIGN OF HIGHWAY BRIDGES IN GENERAL. /AUTHOR/

  • Supplemental Notes:
    • Vol 29, pp 83-94, 14 FIG
  • Authors:
    • Van Eenam, N
  • Publication Date: 1950

Media Info

  • Monograph Title: Proceedings of the Twenty-Ninth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 13-16, 1949.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00209436
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jul 25 1971 12:00AM