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

DOI

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.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

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  - Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)
PB  - Atlantis Press
SP  - 47
EP  - 50
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-17.2017.8
DO  - 10.2991/iceesd-17.2017.8
ID  - Shi2017/04
ER  -