The elastic settlement of a rigid circular foundation anchored to a transversely isotropic rock mass

This paper examines the combined interaction which takes place between a rigid circular test plate and an anchor region used for the purpose of application of the test load. Such a situation can occur in the cable method of in-situ testing where the anchor region is located at a shallow depth. In the theoretical analysis of this problem the elastic rock mass is idealized as a transversely isotropic elastic halfspace and the anchor region is represented as a mindlin type concentrated force. Exact results are developed for the resultant settlement of the test plate. The numerical results presented in this paper indicate that the critical depth at which an anchor region can be situated, so that its effects do not influence the plate settlement, depends on the degree of transverse isotropy (n) of the rock mass. Admittedly, some prior estimate of n needs to be ascertained a priori to fully utilize the theoretical results. Nonetheless the theoretical results presented in this paper can provide valuable guidelines for the optimum location of the anchor region. In this paper we have examined the influence of the anchor region by considering it as a concentrated force. These results can be further extended to cover the situation wherein the anchor cable exerts a known line distribution of forces over a finite length.

Language

  • English

Media Info

  • Pagination: 23-8
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 01437992
  • Record Type: Publication
  • Source Agency: ARRB
  • ISBN: 9061910730
  • Files: ATRI
  • Created Date: Aug 24 2012 9:19PM