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Published: Građevinar 72 (2020) 8
Paper type: Scientific research paper
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Use of finite element method for 2D and 3D analyses of tunnelling induced settlements

Snežana Maraš-Dragojević

Abstract

Results of a series of 3D and 2D analyses of open-face tunnelling in marly-clayey deposits are presented in the paper. A parametric study was performed to investigate the influence of initial stress state, soil deformability, shear strength parameters, and soil anisotropy, on settlement prediction. Comparison of 2D and 3D results shows that the settlement trough predicted by 2D analysis agrees well with 3D results when an appropriate amount of unloading prior to lining installation is adopted. It is demonstrated that the load reduction factor significantly depends on shear strength parameters of soil.

Keywords
tunnel, settlement, 3D FE analysis, stress reduction method

HOW TO CITE THIS ARTICLE:

Maraš-Dragojević, S.: Use of finite element method for 2D and 3D analyses of tunnelling induced settlements, GRAĐEVINAR, 72 (2020) 8, pp. 673-680, doi: https://doi.org/10.14256/JCE.2119.2017

OR:

Maraš-Dragojević, S. (2020). Use of finite element method for 2D and 3D analyses of tunnelling induced settlements, GRAĐEVINAR, 72 (8), 673-680, doi: https://doi.org/10.14256/JCE.2119.2017

LICENCE:

Creative Commons License
This paper is licensed under a Creative Commons Attribution 4.0 International License.
Authors:
Maras Dragojevic
Snežana Maraš-Dragojević
University of Belgrade,
Faculty of Civil Engineering