NUMERICAL-METHODS FOR THE ANALYSIS OF TUNNEL PERFORMANCE IN SQUEEZINGROCKS

Citation
G. Gioda et A. Cividini, NUMERICAL-METHODS FOR THE ANALYSIS OF TUNNEL PERFORMANCE IN SQUEEZINGROCKS, Rock mechanics and rock engineering, 29(4), 1996, pp. 171-193
Citations number
36
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geosciences, Interdisciplinary","Engineering, Civil
ISSN journal
0723-2632
Volume
29
Issue
4
Year of publication
1996
Pages
171 - 193
Database
ISI
SICI code
0723-2632(1996)29:4<171:NFTAOT>2.0.ZU;2-8
Abstract
Some comments are presented on the finite element analysis of the time dependent effects that develop when a tunnel is driven in a rock mass characterized by a viscous behaviour. First, the so called swelling a nd squeezing phenomena are described considering in particular rocks c ontaining clay minerals. Subsequently the discussion is focused on the squeezing behaviour, i.e. on the time dependent increase of the shear deformation which develops with minor volume changes. Some linear and non-linear viscous constitutive laws are discussed, as well as their use in the solution of boundary value problems. Finally, the effects t aking place around tunnels driven into squeezing rocks are illustrated through some numerical analyses based on these constitutive models.