TORSION OF FOUNDATIONS EMBEDDED IN A NON-HOMOGENEOUS SOIL WITH A WEATHERED CRUST

The torsional response of rigid foundations embedded in a non-homogeneous elastic soil with a weathered crust is investigated. The shear modulus of the weathered crust is assumed to decrease linearly with depth and that of the underlying homogeneous soil increases linearly with depth. The problems related to both rigid circular and cylindrical foundations are examined by using an integral method based on displacement and traction Green's functions of the weathered non-homogeneous medium. Numerical solutions for torsional stiffnes of rigid circular foundations are presented for different depths of embedment, gradients of shear modulus profile and depths of weathered crust. A closed form solution based on a simplified stress field in the soil is also developed to evaluate the torsional stiffness of a rigid cylindrical foundation. The torsional stiffness derived by using the approximate solution is compared with the rigorous solution based on exact Green's functions.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • Rajapkse, RKND
  • Selvadurai, APS
• Publication Date: 1989-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 485-496
• Serial:
  • GEOTECHNIQUE
  • Volume: 39
  • Issue Number: 3
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Anchoring; Foundations; Heterogeneity; Samples; Shear modulus; Soil structure interaction; Stiffness; Torsion
• Uncontrolled Terms: Embedment; Rigid foundations
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00488885
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 31 1989 12:00AM