THE EFFECTS OF SOIL PARAMETERS AND BOUNDARY CONDITIONS ON THE CONSOLIDATION OF AN ELASTIC LAYER

The behavior of a linearly elastic layer consolidating under influence of a strip surface load is investigated by means of a previously developed finite element program. Several parameters affect the results of such calculations; included among these parameters are: the Poisson's Ratio, the ratio of horizontal to vertical permeability, boundary conditions with respect to displacement, boundary conditions with respect to drainage, and relative load width. The interaction of these is complex, but some have a larger effect than others. A smooth bottom boundary and bottom drainage cause considerable change in the pattern of pore pressure dissipation. Increased horizontal permeability speeds consolidation but not as much as would be expected intuitively. When the load width is narrow, the horizontal permeability has a larger effect. Poisson's ratio does not markedly affect the rate of consolidation provided scaling is done on the basis of the constrained modulus or the in-plane bulk modulus. (DOT abstract)

• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Civil Engineering, 77 Massachusetts Avenue
  Cambridge, MA  United States  02139
• Authors:
  • Christian, J T
  • Boehmer, J W
• Publication Date: 1970-8

Media Info

• Pagination: 124 p.

Subject/Index Terms

• TRT Terms: Elasticity (Mechanics); Finite element method; Foundations; Loads; Simulation; Soil mechanics; Soil stabilization; Strain (Mechanics); Structural analysis
• Old TRIS Terms: Soil stability; Strains
• Subject Areas: Geotechnology; Railroads;

Filing Info

• Accession Number: 00039273
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: R70-50 Final Rpt
• Contract Numbers: C-85-65t
• Files: TRIS
• Created Date: Nov 24 1973 12:00AM