Abstract
In densely developed urban areas, the use of underground space to provide necessary transportation and utility infrastructures (e.g., subway tunnels, water pipes, and electrical conduits) has increased. The number of deteriorating ground surface structures in need of reconstruction has concurrently increased. Oftentimes, underground structures continue to be used while the ground surface structures undergo repair. To ensure adequate safety above and below ground, the interactive behaviour between underground structures and the adjacent ground during ground surface reconstruction must be fully understood. In this study, the interactive behaviour between an underground tunnel structure and the adjacent ground was predicted using numerical analysis during reconstruction of a deteriorated ground surface structure. In this analysis, various pile loading locations were considered to determine the minimum pile-tunnel offsets for design. Study findings suggest a minimum vertical and horizontal offset between the pile and tunnel of 2.0 times the tunnel diameter to ensure safety.
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Acknowledgments
This research was supported by the Basic Science and Engineering Research Program of the National Research Foundation of Korea (Project Number: NRF-2016R1A2B4013220).
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Kong, SM., Oh, DW., Lee, YJ. (2019). Behaviour of Adjacent Ground and Existing Tunnel According to Locations of Pile Loading. In: Abdel Wahab, M. (eds) Proceedings of the 1st International Conference on Numerical Modelling in Engineering . NME 2018. Lecture Notes in Civil Engineering , vol 20. Springer, Singapore. https://doi.org/10.1007/978-981-13-2405-5_4
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DOI: https://doi.org/10.1007/978-981-13-2405-5_4
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