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Erschienen in:
2019 | OriginalPaper | Buchkapitel
Ground Movements Induced by Tunnels Excavation Using Pressurized Tunnel Boring Machine-Complete Three-Dimensional Numerical Approach
verfasst von : Mohammed Beghoul, Rafik Demagh
Erschienen in: Sustainable Tunneling and Underground Use
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Abstract
The excavation of shallow tunnels in urban areas requires a previous evaluation of their effects on the existing constructions. In the case of shield tunneling, the different achieved operations is a highly three-dimensional soil/structure interaction. It is very complex to represent in a complete numerical simulation and therefore, the assessment of the tunneling-induced soil movements is difficult. In this paper, three dimensional simulation procedure, taking into account in an explicit and complete manner the main sources of movements in the soil mass, is proposed. It is illustrated in the case of Lyon’s subway for which experimental data are available. The comparison of the numerical simulation results with the in situ measurements shows that the 3D procedure of simulation proposed is pertinent.