Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)

Numerical parametric study of three-dimensional tunnel response due to overlying circular basement excavation

Authors
Jiangwei Shi
Corresponding Author
Jiangwei Shi
Available Online April 2017.
DOI
https://doi.org/10.2991/iceesd-17.2017.8How to use a DOI?
Keywords
Numerical parametric study; three-dimensional; tunnel response; circular basement
Abstract
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.
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Proceedings
2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)
Part of series
Advances in Engineering Research
Publication Date
April 2017
ISBN
978-94-6252-328-9
ISSN
2352-5401
DOI
https://doi.org/10.2991/iceesd-17.2017.8How to use a DOI?
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
BT  - 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)
PB  - Atlantis Press
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  -