THE VIBRATING WIRE STRESSMETER-CALIBRATION FACTORS FOR A NOVEL IMPLEMENTATION

This paper considers a biaxial analysis of a new implementation of the conventional vibrating wire stressmeter, which is grouted in a borehole and which monitors stress changes in rock. Three correctly oriented stressmeters provide sufficient information to calculate secondary principal stresses. The analysis follows Spathis' and Truong's discussion of the response of a grouted solid inclusion stressmeter. The paper: (1) derives the basic equations; (2) calculates the calibration factors; and (3) includes a general discussion. This procedure promises to be reliable, repeatable, and simple; it favours situations where increases in compressive stress are expected. The analysis applied to all borehole deformation gauges, and an instrument designer can optimise the geometry and material properties of the grout and instrument body for specific applications. The analysis may also be applied to a plane analysis of tunnel linings, which generalises previous studies by introducing an additional reinforcing layer. (TRRL) (Author/TRRL)

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Headington Hill Hall
    Oxford OX30BW,    
  • Authors:
    • Spathis, A T
  • Publication Date: 1990-8

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00623803
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jul 31 1992 12:00AM