TEMPERATURE MOVEMENTS IN THE MEDWAY BRIDGE-INTERIM REPORT

MOVEMENTS AT THE EXPANSION GAPS OF THE MEDWAY BRIDGE /PRESTRESSED CONCRETE/ AND THE CORRESPONDING TEMPERATURE VARIATIONS IN THE VIADUCT AND RIVER SPANS DURING THE PERIOD APRIL TO JULY, 1964 ARE MEASURED. FROM THESE MEASUREMENTS IT IS CONCLUDED THAT' /1/ THE COEFFICIENT OF EXPANSION FOR THE WHOLE STRUCTURE WAS 12 TIMES TEN TO THE MINUS 6 DEGREES C TO THE MINUS 1 TO AN ACCURACY OF PLUS OR MINUS 1 TIMES 10 TO THE MINUS 6 DEGREES C TO THE MINUS 1, /2/ OVER A 24 HOUR PERIOD THE BRIDGE WAS GENERALLY COOLEST AT 9 A.M. /BRITISH SUMMER TIME/ AND REACHED ITS MAXIMUM EXPANSION AT APPROXI- MATELY 7 P.M. /3/ THROUGHOUT THE PERIOD APRIL TO JULY THE VARIATIONS IN THE BRIDGE TEMPERATURE AT 9 A.M. FOLLOW REASONABLY CLOSELY THE DAILY MEAN SHADE AIR TEMPERATURE, /4/ OWING TO THE THERMAL MASS OF THE STRUCTURE THERE IS NO SAT- ISFACTORY CORRELATION BETWEEN INSTANTANEOUS SHADE AIR TEMPERATURE AND THE INSTANTANEOUS MEAN BRIDGE TEMPERATURE.

  • Supplemental Notes:
    • No Ln/914, 24PP, 12FIG, 4PHOT
  • Authors:
    • Capps, M W
  • Publication Date: 1965-9

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Filing Info

  • Accession Number: 00208142
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS, ATRI
  • Created Date: Mar 18 1994 12:00AM