BRIDGE STRESS-RANGE HISTORY

A COMPUTER SYSTEM FOR MONITORING STRESS HISTORY DATA AND REDUCING THEM TO DIGITAL FORM WAS USED TO ESTIMATE THE EFFECT OF TRAFFIC ON THE FATIGUE LIFE OF A 3-SPAN, CONTINUOUS-STRINGER HIGHWAY BRIDGE. TESTS WERE PERFORMED BY USING CONTROL VEHICLES TO MEASURE THE LOAD-CARRYING CHARACTERISTICS OF THE BRIDGE. FURTHER, EXTENSIVE STRESS- RANGE DATA ON THE STRINGERS WERE OBTAINED UNDER GENERAL TRAFFIC CONDITIONS DURING A 97-HOUR PERIOD. RESULTS INDICATE GOOD CORRELATION BETWEEN THE FREQUENCY DISTRIBUTION OF STRESS RANGES IN THE MOST SEVERELY STRESSED STRINGER AT MIDSPAN AND THE FREQUENCY DISTRIBUTION OF VEHICLES ACCORDING TO WEIGHT. THE STRESS RANGES PRODUCED AT BOTH MIDSPAN AND THE ENDS OF THE COVER PLATES NEAR THE INTERNAL PIERS WERE FOUND TO BE VERY SMALL RELATIVE TO THE ENDURANCE LIMIT OF THE STRUCTURAL COMPONENTS. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 1-12
  • Monograph Title: Loading history of bridges
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00209702
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 7 1972 12:00AM