STRESSES AND DISPLACEMENTS IN NONLINEAR SOIL MEDIA

A METHOD IS PRESENTED FOR DETERMINING THE VERTICAL STRESSES AND DISPLACEMENTS IN SEMI-INFINITE NONLINEAR SOIL MEDIA UNDER CIRCULAR LOADED AREAS. THE SOIL IS ASSUMED TO BE INCOMPRESSIBLE WITH AN ELASTIC MODULUS VARYING WITH THE STATE OF THE STRESSES. THE MEDIUM IS ARBITRARILY DIVIDED INTO SEVEN LAYERS IN WHICH THE STRESSES AND DISPLACEMENTS ARE DETERMINED BY HIGH SPEED COMPUTER USING BURMEISTERS LAYERED THEORY AND THE SUCCESSIVE APPROXIMATIONS PRINCIPLE. RESULTS OF THIS STUDY REVEAL THAT THE NONLINEAR BEHAVIOR OF SOILS HAS A RELATIVELY SMALL EFFECT ON STRESSES BUT A LARGE EFFECT ON DISPLACEMENTS. THIS MAY EXPLAIN WHY BOUSSINESQS SOLUTION OF STRESSES BASED ON LINEAR THEORY HAS BEEN APPLIED TO SOILS WITH GREAT SUCCESS EVEN THOUGH SOILS THEMSELVES ARE BASICALLY NONLINEAR. SINCE THE DIFFERENCES IN STRESSES BETWEEN LINEAR AND NONLINEAR THEORY ARE NOT TOO SIGNIFICANT, THE DISPLACEMENTS IN A NONLINEAR MEDIUM CAN BE ESTIMATED BY A SIMPLIFIED METHOD BASED ON BOUSSINESQS STRESS DISTRIBUTION. IT IS FOUND THAT THIS SIMPLIFIED METHOD CHECKS CLOSELY WITH THE METHOD PRESENTED, ESPECIALLY AT LARGE RADIAL DISTANCES. /AUTHOR/

  • Supplemental Notes:
    • Hpr - 1/3/, BPR 4, STATE 0355
  • Corporate Authors:

    University of Virginia, Charlottesville

    Center for Transportation Studies, P.O. Box 400742
    Charlottesville, VA  USA  22904-4742

    Virginia Highway Research Council

    Charlottesville, VA  USA 
  • Authors:
    • Huang, Y H
  • Publication Date: 1967-4

Subject/Index Terms

Filing Info

  • Accession Number: 00233697
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS
  • Created Date: Jul 1 1994 12:00AM