THE VERTICAL SUBGRADE PRESSURES CAUSED BY NORMAL TRAFFIC ON TRUNK ROAD A.1 AT ALCONBURY HILL /HUNTS/

THE LOAD-SPREADING PROPERTIES OF VARIOUS TYPES OF FLEXIBLE ROAD HAS BEEN STUDIED BY COMPARING THE DYNAMIC PRESSURES GENERATED IN THE SUBGRADE BY TEST VEHICLES /NORMALLY WITH TWO AXLES AND WHEEL LOADS FROM 1000 TO 5000 LB/ TRAVELLING ALONG THE ROAD SURFACE. THIS NOTE DESCRIBES AN EXPERIMENT TO RELATE THE SUBGRADE VERTICAL PRESSURES GENERATED BY NORMAL TRAFFIC TO THEIR WHEEL LOADS, AND TO SEE WHETHER THE DATA ALREADY OBTAINED CAN BE SCALPED UP TO THE GREATER LOADS CARRIED BY NORMAL COMMERCIAL VEHICLES. MEASUREMENTS WERE MADE FROM 903 VEHICLES WEIGHING UP TO 47 TONS AND HAVING AXLE LOADS RANGING UP TO 48,000 LB, SIX PER CENT OF THE TOTAL TONNAGE WAS OBSERVED TO BE CARRIED BY AXLE LOADS EXCEEDING 10 TONS. NINETY PER CENT OF THE AXLES OBSERVED GENERATED SOIL PRESSURES OF LESS THAN 2 LB/SQ IN, BUT A SMALL PROPORTION PRODUCED PRESSURES UP TO NEARLY 7 LB/SQ IN, WHICH WAS ALMOST TEN TIMES THAT PRODUCED AT THIS SITE BY A SINGLE WHEEL LOADED BY ONE TON. /RRL/

  • Supplemental Notes:
    • No Ln/913, 10PP, 4FIG, 1TAB, 7REF
  • Authors:
    • Galloway, J W
  • Publication Date: 0

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Filing Info

  • Accession Number: 00230847
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 15 2004 2:40AM