| Title: |
Simplified finite element modeling of TBM tunneling ; Modélisation numérique simplifiée du creusement au tunnelier |
| Authors: |
Zaiter, H.; Mroueh, H.; Bourgeois, E. |
| Contributors: |
Université de Lille; Instrumentation, Modélisation, Simulation et Expérimentation (COSYS-IMSE); Université Gustave Eiffel; ANR-21-CE22-0011,E-PILOT,Etude de l'impact sur les Pieux LOrs du passage d'un Tunnelier (E-PILOT )(2021) |
| Source: |
XVIII European Conference on Soil Mechanics and Geotechnical Engineering ; https://hal.science/hal-05456249 ; XVIII European Conference on Soil Mechanics and Geotechnical Engineering, Aug 2024, Lisbon, Portugal. pp.967-970, ⟨10.1201/9781003431749-167⟩ |
| Publisher Information: |
CCSD; CRC Press |
| Publication Year: |
2024 |
| Collection: |
LillOA (HAL Lille Open Archive, Université de Lille) |
| Subject Terms: |
settlement; expansion model; numerical modelling; Tunnels; Tunnels numerical modelling expansion model settlement; [SPI]Engineering Sciences [physics] |
| Subject Geographic: |
Lisbon; Portugal |
| Description: |
International audience ; Numerical modelling of TBM tunneling remains a difficult problem due to the complexity of the phenomena involved and the large number of parameters that need to be taken into account. Conventional numerical models generally associate stress relaxation forces on the tunnel contour and compressive forces representing the action of both the TBM and the grout on the ground. These models have certain drawbacks, the main one being the difficulty of calibrating the parameters used. In this paper, we propose a model that takes as input data the control parameters of the TBM and models the injection of the grout by applying compressive forces to the contour of a zone of the mesh. This model combines stress relaxation forces and compressive forces in a single step by applying the final stress directly to the tunnel contour. In particular, it allows the grouting pressure to be taken into account only where it is greater than the initial mean stress in the soil. The approach is implemented in the finite element code CESAR and compared with experimental data from the TULIP project (Tunneling and Limitation of Impacts on Piles); in particular, the influence of the model parameters on the width of the surface settlement trough and the lateral displacements of the soil at different depths are discussed. ; La modélisation numérique du creusement des tunnels au tunnelier reste un problème difficile en raison de la complexité des phénomènes mis en jeu et du grand nombre de paramètres à prendre en compte. Les modèles classiques associent le plus souvent des forces de déconfinement sur le contour du tunnel et des forces de confinement représentant l'action du tunnelier et du mortier de bourrage sur le terrain. Ces modèles présentent un certain nombre de limites, la principale étant la difficulté de caler les paramètres utilisés. Dans ce papier, on propose un modèle qui prend comme données d'entrée les paramètres de pilotage du tunnelier et modélise les injections de bourrage en imposant une contrainte sur le ... |
| Document Type: |
conference object |
| Language: |
English |
| ISBN: |
978-1-00-343174-9; 1-00-343174-7 |
| DOI: |
10.1201/9781003431749-167 |
| Availability: |
https://hal.science/hal-05456249; https://hal.science/hal-05456249v1/document; https://hal.science/hal-05456249v1/file/ECSMGE2024_512_ZAITER_Hadia.pdf; https://doi.org/10.1201/9781003431749-167 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.CFF19B0F |
| Database: |
BASE |