Stability Of Tunnel Face Using Coupled DSC
And TFA Models
Author(s)
P. Prochazka & M. Valek
Abstract
The DSC model proposed by Prof. Desai from Tucson, AZ USA, consists
of two stages of material properties due to the different values of external
load. The first one covers plastic behavior while in the second one the
localized damage is involved. This material behavior is determined from
laboratory experiments. Since in natural conditions a slight deviation may
be expected, the improvement of this behavior can be solved by
additional eigenparameters stated from the TFA (transformation field
analysis. The TFA can be considered in both cases of the DSC, i.e. the
localized damaged state may also be involved.
Particularly in geotechnical engineering one meets the problems of the
stability of tunnel face. The classical numerical methods (the BEM, the
FEM) fail because of "too stiff' behavior of the approximati
Keywords
Related Book
Other papers in this volume
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