Abstract
The basement excavation will change the initial stress equilibrium of the surrounding soil and hence result in surface subsidence and strata movement. The adjacent subway tunnels would be inevitably influenced by the basement excavation in the dense urban environment. Based on the excavation engineering of Wufangyuan project in Shanghai, the effects of excavation on adjacent subway tunnels are studied by monitoring data and centrifugal model test in this paper. Detailed discussions are performed to investigate the different excavation partitions and excavation sequences. The deformations of an adjacent tunnel under different construction conditions are obtained and the comparisons between the tests are conducted. The results indicate that the excavation of the soil in the areas closer to the tunnel induced greater additional settlements and additional convergence. Some of the construction technologies were employed to reduce the deformation of adjacent tunnels including setting a small partition in the foundation excavation close to the tunnel, excavating the small partition after the completion of the main body of foundation excavation as well as enhancing the support in the direction perpendicular to the tunnel.
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References
Wei, S., Liao, S., Zhu, Y., Li, X.: Parametric study on the effect of deep excavation on the adjacent metro station in Suzhou. In: International Conference on Geotechnical and Earthquake Engineering, pp. 223–230 (2013)
Zhang, J.F., Chen, J.J., Wang, J.H., Zhu, Y.F.: Prediction of tunnel displacement induced by adjacent excavation in soft soil. Tunn. Undergr. Sp. Technol. 36(2), 24–33 (2013a)
Zhang, Z.G., Huang, M.S., Wang, W.D.: Evaluation of deformation response for adjacent tunnels due to soil unloading in excavation engineering. Tunn. Undergr. Space. Technol. 38, 244–253 (2013b)
Dolezalova, M.: Tunnel complex unloaded by a deep excavation. Comput. Geotech. 28(3), 469–493 (2001)
Sharma, J.S., Hefny, A.M., Zhao, J., Chan, C.W.: Effect of large excavation on deformation of adjacent MRT tunnels. Tunn. Undergr. Space. Technol. 16(2), 93–98 (2001)
Ge, X.W.: Response of a shield-driven tunnel to deep excavations in soft clay. Doctor of Engineering thesis, Hong Kong University of Science and Technology, China (2002)
Hu, Z.F., Yue, Z.Q., Zhou, J., Tham, L.G.: Design and construction of a deep excavation in soft soils adjacent to the Shanghai metro tunnels. Can. Geotech. J. 40(5), 933–948 (2003)
Zhang, Z.G., Zhang, X.D., Wang, W.D.: Numerical modeling analysis on deformation effect of metro tunnels due to adjacent excavation of foundation pit. J. Wuhan Univ. Technol. 29(11), 93–97 (2007). (in Chinese)
Kog, Y.C.: Buried pipeline response to braced excavation movements. ASCE J. Perform. Constr. Facl. 24(3), 235–241 (2010)
Wei, G., Li, G., Su, Q.: Analysis of the influence of foundation pit construction on an operating metro tunnel based on field measurement. Mod. Tunn. Technol. 51(1), 179–185 (2014). (in Chinese)
Zheng, G., Wei, S., Peng, S., Diao, Y., Ng, C.W.: Centrifuge modeling of the influence of basement excavation on existing tunnels. In: Physical Modelling in Geotechnics, Two Volume Set (2010)
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Cui, J., Li, J., Li, L., Zhao, G. (2018). Deformation of Subway Tunnels Affected by Adjacent Excavation: In-situ Monitoring and Centrifugal Model Test. 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_47
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DOI: https://doi.org/10.1007/978-981-13-0131-5_47
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