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Implementation of Time-dependent
numerical model for Lemaitre's visco-plastic
law in FLAC3D and Lemaitre's visco-plastic
law coupled with damage to predict the
Excavation Damage Zone for a tunnel in
France.
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In this
project, the 3D modelling of time-dependent
behaviour of a monitored tunnel in a remote
location in France has been done. From a
theoretical point of view, Lemaitre's
viscoplastic model was implemented in the
FLAC 3D finite-difference numerical code.
Particular attention was paid to the
stability of the numerical solution for such
an explicit mode of resolution. Lemaitre
model parameters were successfully fitted on
creep tests and then on in situ convergence
measurements after a complete numerical
simulation. |
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Vertical displacement with creep time during
stage 8 (16m) — liner support |
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