Location
Chicago, Illinois
Date
02 May 2013, 7:00 pm - 8:30 pm
Abstract
This paper presents the methodology and results of comprehensive three-dimensional finite element analyses which were performed to assess the potential impacts of tunneling under an existing subway tunnel as well as potential impact of tunneling under an existing bridge. The finite element models took into account all relevant components of the construction process including the soil behavior, shield tunneling, precast concrete segmental lining and the tail void grouting. The models also accounted for stage construction and detailed shield-driven tunnel boring machine (TBM) processes including applying balancing face pressure as well as injecting bentonite slurry through the TBM shield. This study has demonstrated that the predicted tunneling-induced impacts on the existing structures can be effectively mitigated by using controlled shield-driven TBM tunneling.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Allahverdi, Navid and Nasri, Verya, "Three Dimensional Numerical Analysis for Soft Ground Tunneling" (2013). International Conference on Case Histories in Geotechnical Engineering. 11.
https://scholarsmine.mst.edu/icchge/7icchge/session05/11
Three Dimensional Numerical Analysis for Soft Ground Tunneling
Chicago, Illinois
This paper presents the methodology and results of comprehensive three-dimensional finite element analyses which were performed to assess the potential impacts of tunneling under an existing subway tunnel as well as potential impact of tunneling under an existing bridge. The finite element models took into account all relevant components of the construction process including the soil behavior, shield tunneling, precast concrete segmental lining and the tail void grouting. The models also accounted for stage construction and detailed shield-driven tunnel boring machine (TBM) processes including applying balancing face pressure as well as injecting bentonite slurry through the TBM shield. This study has demonstrated that the predicted tunneling-induced impacts on the existing structures can be effectively mitigated by using controlled shield-driven TBM tunneling.
