Numerical parametric study of three-dimensional tunnel response due to overlying circular basement excavation
Available Online April 2017.
- https://doi.org/10.2991/iceesd-17.2017.8How to use a DOI?
- Numerical parametric study; three-dimensional; tunnel response; circular basement
- Deep basement excavation inevitably induces stress changes in the ground leading to soil movements, which may cause adverse effects on existing tunnels. Although basement-tunnel interaction has attracted increasing attention recently, the influence of circular basement excavation on metro tunnels is rarely investigated. A systematic numerical parametric study is conducted to investigate the influence of excavation diameter and cover-to-tunnel diameter on three-dimensional deformation mechanisms of underlying tunnels. The tunnel heave and transverse tensile strain at basement centerline reach maximum values when the excavation diameter is seven times of the final excavation depth. If a basement excavation with a small diameter is assumed to be a two-dimensional problem, tunnel heave and transverse tensile strain are grossly overestimated.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Jiangwei Shi PY - 2017/04 DA - 2017/04 TI - Numerical parametric study of three-dimensional tunnel response due to overlying circular basement excavation PB - Atlantis Press SP - 47 EP - 50 SN - 2352-5401 UR - https://doi.org/10.2991/iceesd-17.2017.8 DO - https://doi.org/10.2991/iceesd-17.2017.8 ID - Shi2017/04 ER -