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Final Year Project Ideas & Abstracts / Other Project Ideas & Abstracts / Civil Engineering Project Ideas & Abstracts / Numerical modeling of tunneling

Numerical modeling of tunneling
Numerical modeling of tunneling
Numerical modeling of tunneling

Abstract:The finite element program CRItical State Program (CRISP) has been used to model the New Austrian Tunneling Method (NATM) in London Clay. The non-linear behavior of the London Clay was modeled by a Strain Dependent Modified Cam Clay (SDMCC) model and the tunnel lining was modeled by constant and time-dependent classic models. The construction process was modeled in two and three dimensions by removing soil elements in sequence. The tunnel lining was either assumed wished-in-place or introduced after the excavation of each panel. The results obtained from plane strain and three dimensional analyses are compared to assess the importance of arching of soil ahead of tunnel race.