FREQUENCIES OF VARIOUS LEVELS OF STRESS IN HIGHWAY BRIDGES

A METHOD IS PRESENTED FOR PREDICTING THE FREQUENCIES OF VARIOUS LEVELS OF STRESS TO WHICH HIGHWAY BRIDGES MAY BE SUBJECTED AS A RESULT OF THE HEAVY VEHICLE LOADS ENCOUNTERED IN VARIOUS COMPOSITIONS AND VOLUMES OF TRAFFIC FOR ANY GIVEN PERIOD OF TIME OR THROUGHOUT THE LIFE OF A GIVEN STRUCTURE. IN THE LITERATURE ON HEAVY VEHICLE LOADS AND THEIR STRESS- PRODUCING EFFECTS ON HIGHWAY BRIDGES, CERTAIN FACETS OF THE PROBLEM HAVE BEEN TREATED BY SEVERAL AUTHORS FROM TIME TO TIME. THE PROCEDURES EMBODIED IN THESE PAST WORKS ARE BROUGHT TOGETHER FOR THE FIRST TIME AND PRESENTED AS A COMPLETE METHOD FOR PREDICTING THE NUMBER OF REPETITIONS OF VARIOUS INTENSITIES OF STRESS TO WHICH ANY PARTICULAR MEMBER OR PART OF A GIVEN STRUCTURE MAY BE SUBJECTED AS A RESULT OF GIVEN TRAFFIC CONDITIONS. FOR THE INVESTIGATION OF VARYING NUMBERS OF STRESS REPETITIONS OF VARIOUS INTENSITIES OF STRESS AND HOW THEY MAY BE RELATED TO PRESENT DESIGN CRITERIA FOR FATIGUE, IT IS HIGHLY DESIRABLE THAT A RELIABLE METHOD BE AVAILABLE FOR PREDICTING THE FREQUENCIES OF SUCH STRESSES. IT IS BELIEVED THAT THE METHOD PRESENTED ACCOMPLISHES THIS OBJECTIVE BY PROVIDING THE MEANS FOR PREDICTING THE FREQUENCIES OF VARIOUS LEVELS OF STRESS PRODUCED BY HEAVY VEHICLE LOADS IN ANY PARTICULAR PART OR MEMBER OF A GIVEN BRIDGE CORRESPONDING WITH GIVEN TRAFFIC CONDITIONS. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/38/38-008.pdf
• Supplemental Notes:
  • Vol 38, pp 113-148, 19 FIG, 10 TAB, 10 REF, 2 APP. 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.
• Authors:
  • Stephenson, H K
• Publication Date: 1959

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Thirty-Eighth Annual Meeting of the Highway Research Board, Washington, D.C., January 5-9, 1959
• Serial:
  • Highway Research Board Proceedings
  • Volume: 38
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Bending; Bending moments; Bending stress; Design; Equations; Fatigue (Physiological condition); Frequency (Electromagnetism); Highway bridges; Load tests; Motor carriers; Stress ratio; Stresses; Traffic volume; Vehicle mix
• Uncontrolled Terms: Design criteria
• Old TRIS Terms: Simple span
• Subject Areas: Bridges and other structures; Design; Highways; Motor Carriers;

Filing Info

• Accession Number: 00209478
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Sep 19 1971 12:00AM