THE BEHAVIOUR OF FOOTINGS RESTING ON A NON-HOMOGENEOUS SOIL MASS WITH A CRUST. PART II - CIRCULAR FOOTINGS

The behaviour of circular footings resting on a non- homogeneous elastic soil with a crust is investigated. The stiffness of the crust is assumed to be either constant or to decrease with depth while the stiffness of the underlying soil increases linearly with depth. Consideration is given to the effect of layer depth, crust depth and the rate of variation of stiffness within the crust and the underlying soil, upon the settlement profile. The behaviour of circular footings is then compared with that of strip footings and the relative importance of the crust and the underlying soil parameters is discussed. The influence of cross- anisotropy upon footing response is briefly examined and the effects of neglecting anisotropy are indicated for a number of soil profiles. The results of this study are presented in the form of influence charts which may be used in hand calculations to estimate the settlement of circular footings for a wide range of practical cases. The use of these charts is illustrated by means of a worked example (A). (TRRL)

• Corporate Authors:

  University of Sydney

  School of Civil Engineering, Parramatta Road
  Sydney, New South Wales  Australia  2006
• Authors:
  • Rowe, R K
  • BOOKER, J R
• Publication Date: 1980-9

Media Info

• Features: Figures; References; Tables;
• Pagination: 54 p.

Subject/Index Terms

• TRT Terms: Anisotropic materials; Calculation; Charts; Circles; Depth; Footings; Ground settlement; Heterogeneity; Homogeneity; Isotropy; Mathematical analysis; Methodology; Motion; Natural earth crust materials; Pavement layers; Samples; Settlement (Structures); Soils; Stiffness; Strip footings; Telephone influence factors
• Uncontrolled Terms: Computation; Linear
• Old TRIS Terms: Anisotropic mass; Crusts; Influence factors
• ITRD Terms: 6471: Analysis (math); 6486: Chart; 6423: Circle; 6499: Depth; 5916: Homogeneity; 5917: Isotropic; 2952: Layer; 6484: Linear system; 9102: Method; 5483: Movement; 5792: Settlement; 3397: Shallow foundation; 4156: Soil; 5931: Stiffness
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00335690
• Record Type: Publication
• Source Agency: ARRB
• Report/Paper Numbers: Res Rpt. R 375 Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: Dec 22 1981 12:00AM