THE PRACTICAL APPLICATION OF SOIL STIFFNESS COEFFICIENTS

SOIL LOADS ARE TRANSMITTED BY MEANS OF ELASTIC SOIL MASSES WHICH DEFORM UNDER THE EFFECTS OF COMPRESSION STRESSES DEVELOPED AS THE SOIL SINKS. THIS GENERAL THEORY CAN BE APPLIED TO REINFORCED CONCRETE FOOTINGS OF LOW STIFFNESS AND TO LONG BEAMS RESTING ON DEFORMABLE SOIL. IN THE CASE OF FOOTINGS OR FLOORS THE INFLUENCE OF THE RIGIDITY OF THE STRUCTURES THEY SUPPORT MUST ALSO BE CONSIDERED. TO EQUATE THE PROBLEM, THE HYPOTHESIS THAT SOIL DEFORMS PPROPORTINALLY TO THE PRESSURE DEVELOPED WITHIN IT IS ASSUMED AND THIS IS APPLIED TO RANDOMLY LOADED BEAMS RESTING ON A CONTINUOUS ELASTIC SUPPORT /AS IF ON AN INFINITE NUMBER OF VERTICAL SPRINGS/. BASED ON THIS GENERAL ASSUMPTION, THE COEFFICIENT OF STIFFNESS AND THE PRACTICAL DESIGN OF FOOTINGS AND BEAMS UNDER CONCENTRATED LOAD, OF BEAMS OF INFINITE LENGTH SUBJECTED TO TORQUE APPLIED AT ANY POINT OF THE BEAM, OF AN FINITE LENGTH BEAM SUBJECTED TO RANDOM LOADS CAN BE DERIVED. THE INFLUENCE LINES OF SIGMA T AND M AT ANY POINT OF THE INFINITE LENGTH BEAM UNDER CONCENTRATED LOAD AND THE INFLUENCE OF THE SUPERSTRUCTURE ON THE DISTRIBUTION OF THE PRESSURES CAN BE PLOTTED.

  • Supplemental Notes:
    • No 1, pp 1-15, 18 FIG, 6 TAB
  • Authors:
    • Verdeyen, J
  • Publication Date: 0

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  • Accession Number: 00230797
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 15 2004 2:40AM