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Risk management overview of tunnels using numerical modeling

Purpose: The purpose of this paper is to introduce the numerical methods in tunnel engineering and their capabilities to indicate the fracture and failure in all kinds of tunneling methods such as New Austrian Tunneling Method, tunnel boring machine and cut-cover. An essential definition of numerica...

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Main Authors: Ghiasi, Vahed, Omar, Husaini, Kim Huat, Bujang, Muniandi, Ratnasamy, Md Yusoff, Zainuddin
Format: Article
Language:English
Published: Emerald Group Publishing 2011
Online Access:http://psasir.upm.edu.my/id/eprint/22927/1/Risk%20management%20overview%20of%20tunnels%20using%20numerical%20modeling.pdf
http://psasir.upm.edu.my/id/eprint/22927/
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spelling my.upm.eprints.229272015-11-27T08:51:07Z http://psasir.upm.edu.my/id/eprint/22927/ Risk management overview of tunnels using numerical modeling Ghiasi, Vahed Omar, Husaini Kim Huat, Bujang Muniandi, Ratnasamy Md Yusoff, Zainuddin Purpose: The purpose of this paper is to introduce the numerical methods in tunnel engineering and their capabilities to indicate the fracture and failure in all kinds of tunneling methods such as New Austrian Tunneling Method, tunnel boring machine and cut-cover. An essential definition of numerical modeling of tunnels to determine the interaction between geo-material (soil and rock) surrounding the tunnel structure is discussed. Design/methodology/approach: Tunnel geo-material (soil and rock) interaction requires advanced constitutive models for the numerical simulation of linear, nonlinear, time-dependent, anisotropic, isotropic, homogenous and nonhomogeneous behaviors. The numerical models discussed in this paper are developed in finite element method (FEM), finite deference method (FDM), boundary element method and discrete element method and these tools are used to illustrate the behavior of tunnel structure deformation under different loads and in complicated conditions. The disadvantage of this method is the tunnel lining assumed an independent structure under fixed load which is unable to model soil-lining interaction. Predicting the effect of all natural factors on tunnels is the most difficult method. The above-mentioned numerical methods are very simple and quick to use and the results are conservative and practical for users. One of the most significant advantages of the numerical method is in predicting the critical area surrounding the tunnel and the tunnel structure before making the tunnel construction due to different loads. Findings: Numerical modeling is used as control method in reducing the risk of tunnel construction failures. Since some factors such as settlement and deformation are not completely predictable in rock and soil surrounding the tunnel, using numerical modeling is a very economical and capable method in predicting the behavior of tunnel structures in various complicated conditions of loading. Another benefit of using numerical simulation is in the colorful illustrations predicting the tunnel behavior before, during and after construction and operation. Originality/value: There are not many conducted studies using numerical models to tunnel structures that estimate the critical zones. As some of the methods available have limitation in simulating and modeling the whole tunnel design factors, numerical modeling seems to be the best option, because it is fast, economical, accurate and more interesting in predicating critical zones in tunnel. However, what softwares predict are not always the same as real ground nature conditions in which there is tunnel. Emerald Group Publishing 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/22927/1/Risk%20management%20overview%20of%20tunnels%20using%20numerical%20modeling.pdf Ghiasi, Vahed and Omar, Husaini and Kim Huat, Bujang and Muniandi, Ratnasamy and Md Yusoff, Zainuddin (2011) Risk management overview of tunnels using numerical modeling. Journal of Engineering, Design and Technology, 9 (1). pp. 110-124. ISSN 1726-0531; ESSN: 1758-8901 10.1108/17260531111121495
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Purpose: The purpose of this paper is to introduce the numerical methods in tunnel engineering and their capabilities to indicate the fracture and failure in all kinds of tunneling methods such as New Austrian Tunneling Method, tunnel boring machine and cut-cover. An essential definition of numerical modeling of tunnels to determine the interaction between geo-material (soil and rock) surrounding the tunnel structure is discussed. Design/methodology/approach: Tunnel geo-material (soil and rock) interaction requires advanced constitutive models for the numerical simulation of linear, nonlinear, time-dependent, anisotropic, isotropic, homogenous and nonhomogeneous behaviors. The numerical models discussed in this paper are developed in finite element method (FEM), finite deference method (FDM), boundary element method and discrete element method and these tools are used to illustrate the behavior of tunnel structure deformation under different loads and in complicated conditions. The disadvantage of this method is the tunnel lining assumed an independent structure under fixed load which is unable to model soil-lining interaction. Predicting the effect of all natural factors on tunnels is the most difficult method. The above-mentioned numerical methods are very simple and quick to use and the results are conservative and practical for users. One of the most significant advantages of the numerical method is in predicting the critical area surrounding the tunnel and the tunnel structure before making the tunnel construction due to different loads. Findings: Numerical modeling is used as control method in reducing the risk of tunnel construction failures. Since some factors such as settlement and deformation are not completely predictable in rock and soil surrounding the tunnel, using numerical modeling is a very economical and capable method in predicting the behavior of tunnel structures in various complicated conditions of loading. Another benefit of using numerical simulation is in the colorful illustrations predicting the tunnel behavior before, during and after construction and operation. Originality/value: There are not many conducted studies using numerical models to tunnel structures that estimate the critical zones. As some of the methods available have limitation in simulating and modeling the whole tunnel design factors, numerical modeling seems to be the best option, because it is fast, economical, accurate and more interesting in predicating critical zones in tunnel. However, what softwares predict are not always the same as real ground nature conditions in which there is tunnel.
format Article
author Ghiasi, Vahed
Omar, Husaini
Kim Huat, Bujang
Muniandi, Ratnasamy
Md Yusoff, Zainuddin
spellingShingle Ghiasi, Vahed
Omar, Husaini
Kim Huat, Bujang
Muniandi, Ratnasamy
Md Yusoff, Zainuddin
Risk management overview of tunnels using numerical modeling
author_facet Ghiasi, Vahed
Omar, Husaini
Kim Huat, Bujang
Muniandi, Ratnasamy
Md Yusoff, Zainuddin
author_sort Ghiasi, Vahed
title Risk management overview of tunnels using numerical modeling
title_short Risk management overview of tunnels using numerical modeling
title_full Risk management overview of tunnels using numerical modeling
title_fullStr Risk management overview of tunnels using numerical modeling
title_full_unstemmed Risk management overview of tunnels using numerical modeling
title_sort risk management overview of tunnels using numerical modeling
publisher Emerald Group Publishing
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/22927/1/Risk%20management%20overview%20of%20tunnels%20using%20numerical%20modeling.pdf
http://psasir.upm.edu.my/id/eprint/22927/
_version_ 1643827918557675520
score 13.211869

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