Abstract
Constructing a new tunnel close to an existing one is a concerned engineering problem since the interaction between tunnels at a close range could lead to ground settlement, resulting in damage of buildings. This paper presents the particular interest in ground settlement induced by tunnel excavations and the configurations of twin-tunnel. For this purpose, the numerical model is established, in which the S-CLAY1 model is implemented. A series of numerical simulations on twin-tunnel at spacing of 1.5D, 3D and 4.5D are carried out. The simulated results and centrifuge measurements are compared for different ground loss rates and tunnel configurations. All the results demonstrate that the numerical analysis in conjunction with the S-CLAY1 model can well predict the ground settlement induced by multi-tunnel excavation, which is ready for practical engineering in tunnel groups.
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This research project is financially supported by National Natural Science Foundation of China (41372285 and 51579179).
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Zhu, BQ., Jin, YF., Yin, ZY., Zhang, DM., Huang, HW. (2018). Numerical Analysis of Multi-tunnel Interaction in Clay. In: Qiu, T., Tiwari, B., Zhang, Z. (eds) Proceedings of GeoShanghai 2018 International Conference: Advances in Soil Dynamics and Foundation Engineering. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0131-5_45
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DOI: https://doi.org/10.1007/978-981-13-0131-5_45
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