3D Modelling for Mechanized Tunnelling in Soft Ground-Influence of the Constitutive Model
作者： MECHANIZED TUNNELLING IN SOFT , None
DOI: 10.3844/AJASSP.2013.863.875
关键词: Geotechnical engineering 、 Ground settlement 、 Quantum tunnelling 、 Constitutive equation 、 Numerical modeling 、 Settlement (structural) 、 Mohr–Coulomb theory 、 Displacement field 、 Engineering 、 Strain hardening exponent
摘要: The main purpose of this study was to provide a thr ee-dimensional numerical model which would allow show the influence constitutive ground on tunnel lining behaviour and displacement field surrounding tunnel. Most processes that occur during mechanized excavation have been simulated in model. Besid es well-known elastic linear perfectly plastic with Mohr Coulomb failure criteria (MC), Cap-Yield (CYsoil), is strain hardening takes into consid eration hyperbolic soil has al so adopted. results shown considerable effect behavior field. General ly, CYsoil produces higher structural for ce settlement values than those predicted b y MC
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