LATERAL PRESSURES ON BASEMENT WALL. RESULTS FROM FULL-SCALE TESTS

THE TEST RESULTS INDICATE THAT HIGH LATERAL EARTH PRESSURES CAN DEVELOP DURING THE PLACEMENT OF A GRANULAR BACKFILL BEHIND A BASEMENT WALL. THE RESULTS ALSO SHOW THAT THE EARTH PRESSURE DISTRIBUTION WILL BE APPROXIMATELY LINEAR IF THE SOIL IS PLACED LOOSELY WITHOUT COMPACTION. THE MEASURED LATERAL EARTH PRESSURE CORRESPONDED K = 0.35 FOR A GRAVELLY SAND AND K = 0.31 FOR A SILTY FINE SAND. THE MEASUREMENTS SHOWED THAT A REDISTRIBUTION OF EARTH PRESSURES TOOK PLACE WITH TIME IN THE SILTY FINE SAND, AND THAT THE EARTH PRESSURES INCREASED CONSIDERABLY WHEN THE BACKFILL MATERIAL FROZE. THE LATERAL EARTH PRESSURE WAS APPROXIMATELY RECTANGULARLY DISTRIBUTED IN THE COMPACTED BACKFILL OF GRAVELLY SAND. IN THE COMPACTED SILTY FINE SAND, THE EARTH PRESSURE WAS CONSIDERABLY HIGHER CLOSE TO THE SURFACE OF THE BACKFILL THAN AT THE BOTTOM. THE TOTAL LATERAL PRESSURE FOR THE COMPACTED BACKFILL WAS IN SOME CASES LESS THAN THAT OF THE LOOSELY PLACED MATERIAL. AN EXTERNAL LOAD ACTING ON THE SURFACE OF THE BACKFILL CAUSED A LARGE INCREASE OF THE LATERAL EARTH PRESSURE IN THE LOOSELY PLACED MATERIAL, WHILE THE PRESSURE INCREASE IN THE COMPACTED MATERIAL WAS SMALL. /TRRL/

  • Corporate Authors:

    Fifth Eur Conf On Soil Proc

    ,    
  • Authors:
    • Rehnman, S E
    • BROMS, B B
  • Conference:
  • Publication Date: 1972

Language

  • English

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 189-97

Subject/Index Terms

Filing Info

  • Accession Number: 00236962
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Feb 11 1973 12:00AM