Finite Element Modeling of Twin tunnel in Milan, Italy
- Author Haitham J. M. ODEH
- Co-Author Ashraf SHEBLE, Rashad ALSIRAWAN
- DOI https://ww
- Country : Hungary
- Subject : Structural and Geotechnical Engineering
Keywords : Finite element modelling, Contraction Method, Twin Tunnel, Tunnel-Soil interaction
Abstract
This research paper focuses on the soil-tunnel interaction for a twin tunnel located in Milan Italy (metro-line 5). The analysis is performed using two- and three-dimensional numerical models created using the finite element method (FEM) with PLAXIS 2D and PLAXIS 3D. The elastic-plastic non-linear behaviour is adapted to model the stress-deformation behaviour of soil, both the hardening soil model with small-strain stiffness (HSS) and the Hardening Soil model (HS) are used. The 2D and 3D models for the twin tunnels are validated using the two-dimensional and three-dimensional contraction method. The results are verified with reference field measurements, the comparison reveals that the field measurements and finite element analysis results are remarkably similar.
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