Professional paper

https://doi.org/10.32762/zr.25.1.3

Advantages of Using 3D Numerical Models in Tunnel Design

Ivan Mance ; University of Rijeka, Faculty of Civil Engineering
Sanja Dugonjić Jovančević orcid.org/0000-0002-0242-7409 ; University of Rijeka, Faculty of Civil Engineering
Josip Peranić orcid.org/0000-0002-2574-6349 ; University of Rijeka, Faculty of Civil Engineering

Abstract

The choice between 2D and 3D numerical modeling depends primarily on the subject analysis, project requirements, deadlines, available resources, as well as justification for additional investment in complex models. The results of 2D and 3D tunnel numerical models are presented in order to analyze the fundamental differences and to highlight the 3D model advantages. The models were created on the cross section with the largest overlay, all according to the design documentation. The analyses were performed using the RS2 and RS3 Rocscience programs. The obtained results have shown that the main advantage of the 3D model is the possibility to monitor the increase of radial displacements with excavation progress, and to provide a more realistic insight into the efficiency of the installed support elements.

Keywords

3D numerical modeling; FEM; tunnels; rock support; convergence

Hrčak ID:

288280

URI

https://hrcak.srce.hr/288280

Publication date:

22.12.2022.

Article data in other languages: croatian

Visits: 334 *