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/
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Supplemental Notes:
- Vol 29, pp 83-94, 14 FIG. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Van Eenam, N
- Publication Date: 1950
Media Info
- Media Type: Digital/other
- Monograph Title: Proceedings of the Twenty-Ninth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 13-16, 1949.
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Serial:
- Highway Research Board Proceedings
- Volume: 29
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Bridge design; Bridge members; Bridges; Electromagnets; Highway bridges; Length; Live loads; Metal bridges; Steel bridges; Stresses; Structural design
- Uncontrolled Terms: Bridge spans
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 00209436
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jul 25 1971 12:00AM