@Article{cmes.2009.052.279,
AUTHOR = {Frederic L. Pellet},
TITLE = {Contact between a Tunnel Lining and a Damage-Susceptible Viscoplastic Medium},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {52},
YEAR = {2009},
NUMBER = {3},
PAGES = {279--296},
URL = {http://www.techscience.com/CMES/v52n3/26773},
ISSN = {1526-1506},
ABSTRACT = {In this study, the contact and interaction between a tunnel lining support and a damage-susceptible viscoplastic medium is investigated. First, back-analysis of the time-dependent behaviour of a drift excavated across a carboniferous rock mass which exhibited large delayed displacements was undertaken. Drift closure was simulated using an elasto-viscoplastic constitutive model that included the strength degradation process. This 3D numerical simulation was performed taking into account both stage construction sequence and rate of excavation advancement. A comparison of the numerical results with the data measured on site allowed for the calibration of the model parameters. Subsequently, the installation of a concrete lining was simulated to account for contact with the rock mass. This blind numerical simulation aimed to optimize the tunnel cross-section and establish the dimensions of a suitable concrete supporting lining. Three months after installation, the stresses measured in the concrete lining were in agreement with the numerically predicted stresses.},
DOI = {10.3970/cmes.2009.052.279}
}