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
TY - JOUR
AU - Maraš-Dragojević, Snežana
PY - 2020
UR - https://grafar.grf.bg.ac.rs/handle/123456789/3026
AB - 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.
PB - Croatian Association of Civil Engineers
T2 - Građevinar
T1 - Use of finite element method for 2D and 3D analyses of tunnelling induced settlements
EP - 680
IS - 8
SP - 673
VL - 72
DO - 10.14256/JCE.2119.2017
ER -
@article{
author = "Maraš-Dragojević, Snežana",
year = "2020",
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.",
publisher = "Croatian Association of Civil Engineers",
journal = "Građevinar",
title = "Use of finite element method for 2D and 3D analyses of tunnelling induced settlements",
pages = "680-673",
number = "8",
volume = "72",
doi = "10.14256/JCE.2119.2017"
}
Maraš-Dragojević, S.. (2020). Use of finite element method for 2D and 3D analyses of tunnelling induced settlements. in Građevinar
Croatian Association of Civil Engineers., 72(8), 673-680.
https://doi.org/10.14256/JCE.2119.2017
Maraš-Dragojević S. Use of finite element method for 2D and 3D analyses of tunnelling induced settlements. in Građevinar. 2020;72(8):673-680.
doi:10.14256/JCE.2119.2017 .
Maraš-Dragojević, Snežana, "Use of finite element method for 2D and 3D analyses of tunnelling induced settlements" in Građevinar, 72, no. 8 (2020):673-680,
https://doi.org/10.14256/JCE.2119.2017 . .
