THEORETICAL STUDY ON THE NONELASTIC BEHAVIORS OF JOINTED ROCKMASSES (APRIL 1972)

A mechanical model applicable to the mechanical characteristics of jointed rockmasses is detailed, and a systematic discussion is presented of the mechanical treatment of rockmasses based on the elasto-plactic theory. Characteristics of rock masses are reviewed that were obtained by the jack test, water chamber test and by the shearing test. The measurement of displacement is described of rockmasses by a triangular net and steel bars buried in the rockmasses. The measurements are compared with the values obtained from the theory of elasticity. Basic theories are discussed which relate to the equilibrium of a mass point and principle of virtual work, and equation of equilibrium and principle of variaions of continuous bodies. The mechanical treatment of discontinuous bodies covers the characteristics of sliding and deformations of such bodies. Plastic strain increment and criterion of yielding in aeolotropic elastic-plastic body accompanied by volumetric change is reviewed. The analysis is described of groups of joints crossing each other orthogonally and groups crossing each other obliquely, and the results are compared of anlaysis and measurements in block shear test in which an inclined load is applied, and where a vertical load and inclined load are applied. Conclusions based on the study are listed.

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  • Corporate Authors:

    Public Works Research Institute

    2-28-32 Honkomagome, Bunkyo-ku
    Tokyo,   Japan 
  • Authors:
    • Iida, R
    • Kobayashi, S
  • Publication Date: 1974

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 35-142
  • Serial:

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Filing Info

  • Accession Number: 00080840
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 6 2003 12:00AM