Table of Content

Open Access

ARTICLE

Contact between a Tunnel Lining and a Damage-Susceptible Viscoplastic Medium

Frederic L. Pellet1
1 University of Grenoble, Laboratory 3S-R, Grenoble, France

Computer Modeling in Engineering & Sciences 2009, 52(3), 279-296. https://doi.org/10.3970/cmes.2009.052.279

Abstract

In this study, the contact and interaction between a tunnel lining support and a damage-susceptible viscoplastic medium is investigated. First, back-analysis of the time-dependent behaviour of a drift excavated across a carboniferous rock mass which exhibited large delayed displacements was undertaken. Drift closure was simulated using an elasto-viscoplastic constitutive model that included the strength degradation process. This 3D numerical simulation was performed taking into account both stage construction sequence and rate of excavation advancement. A comparison of the numerical results with the data measured on site allowed for the calibration of the model parameters. Subsequently, the installation of a concrete lining was simulated to account for contact with the rock mass. This blind numerical simulation aimed to optimize the tunnel cross-section and establish the dimensions of a suitable concrete supporting lining. Three months after installation, the stresses measured in the concrete lining were in agreement with the numerically predicted stresses.

Keywords

Damage, viscoplasticity, tunnel support, soil structure interaction, soft rock.

Cite This Article

Pellet, F. L. (2009). Contact between a Tunnel Lining and a Damage-Susceptible Viscoplastic Medium. CMES-Computer Modeling in Engineering & Sciences, 52(3), 279–296.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1353

    View

  • 661

    Download

  • 0

    Like

Share Link

WeChat scan