Indirect identification of the average elastic characteristics of rock masses
Two procedures suitable for the identification of the average elastic characteristics of in situ rock masses are presented. They are based on the minimization of an error function representing the discrepancy between displacement measurements performed on the rock mass subjected to known external actions and the corresponding data obtained by a numerical analysis. The first method requires the formulation of the elasticity inverse problem and is based on the least square minimization procedure. The second one, based on the simplex minimization algorithm, does not require the inverse problem formulation. As an example the two approaches have been applied to the identification of the bulk and shear moduli of the rock underlying an hypothetical earth dam. By comparing the results of the two analyses it can be observed that the identification by least square minimization requires less computer time than that based on the simplex method. This could suggest that the first method is more convenient for practical application than the second one. However, other points have to be considered in order to assess the validity of the two methods.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9061910730
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Authors:
- Gioda, G
- Conference:
- Publication Date: 1980
Language
- English
Media Info
- Pagination: 65-73
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Serial:
- Volume: 1
Subject/Index Terms
- TRT Terms: Elasticity (Mechanics); Field tests; Methodology; Modulus of deformation; Motion; Properties of materials; Regression analysis; Rocks
- ATRI Terms: Elasticity; Field test; Material properties; Method; Modulus; Movement; Regression analysis; Rock
- Subject Areas: Data and Information Technology; Geotechnology; Materials;
Filing Info
- Accession Number: 01437988
- Record Type: Publication
- Source Agency: ARRB
- ISBN: 9061910730
- Files: ATRI
- Created Date: Aug 24 2012 9:19PM