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Ground Behaviour Around a Tunnel Using Various Soil Models

Finite Element (FE) analyses are used world widely in geotechnical engineering to obtain the soil displacement caused by tunnelling. The surface settlement induced by tunnelling predicted by FE is known to be wider and shallower than the field measurements particularly for stiff clays with high coe...

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Main Authors:	Namazi, Eshagh, Hisham, Bin Mohamad, Ahmad Kueh, Beng Hong, Mohsen, Hajihassani, Siti Norafida, Binti Jusoh, Khaili Abad, Seyed Vahid Alavi Nezhad
Format:	E-Article
Language:	English
Published:	Researchgate Publication 2012
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://ir.unimas.my/id/eprint/23108/1/Ground%20Behaviour%20Around%20a%20Tunnel%20Using%20Various%20Soil%20Models.....%20-%20Copy.pdf http://ir.unimas.my/id/eprint/23108/ https://www.researchgate.net/publication/261368027_Ground_Behaviour_Around_a_Tunnel_Using_Various_Soil_Models
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record_format	eprints
spelling	my.unimas.ir.231082019-01-17T08:07:31Z http://ir.unimas.my/id/eprint/23108/ Ground Behaviour Around a Tunnel Using Various Soil Models Namazi, Eshagh Hisham, Bin Mohamad Ahmad Kueh, Beng Hong Mohsen, Hajihassani Siti Norafida, Binti Jusoh Khaili Abad, Seyed Vahid Alavi Nezhad TA Engineering (General). Civil engineering (General) Finite Element (FE) analyses are used world widely in geotechnical engineering to obtain the soil displacement caused by tunnelling. The surface settlement induced by tunnelling predicted by FE is known to be wider and shallower than the field measurements particularly for stiff clays with high coefficient of earth pressure at rest, K0. It has been recognized that neglecting the non-linearity, anisotropy and threedimensional effects of the soil model as well as K0 condition can be the reasons of this discrepancy. Unfortunately, such numerical studies were only limited to the problem in the plane strain condition whereas tunnelling is obviously a three dimensional (3D) problem. This paper compares 3D FE modelling of tunnel constructions in stiff soil of London Clay using non-linear soil model with low and high K0 regimes. It was found that modelling using isotropic non-linear soil with low value of K0 gave the best matched-fit data on the observed greenfield surface settlement as opposed to the other soil models. In addition, the model is able to replicate the steady state condition of ground movement after the completion of tunnel construction that is when the tunnel face has passed seven times of the tunnel diameter beyond the boundary point. This steady-state condition is not possible to simulate using other soil models. Researchgate Publication 2012 E-Article PeerReviewed text en http://ir.unimas.my/id/eprint/23108/1/Ground%20Behaviour%20Around%20a%20Tunnel%20Using%20Various%20Soil%20Models.....%20-%20Copy.pdf Namazi, Eshagh and Hisham, Bin Mohamad and Ahmad Kueh, Beng Hong and Mohsen, Hajihassani and Siti Norafida, Binti Jusoh and Khaili Abad, Seyed Vahid Alavi Nezhad (2012) Ground Behaviour Around a Tunnel Using Various Soil Models. Electronic Journal of Geotechnical Engineering, 17. pp. 609-622. ISSN 1089-3032 https://www.researchgate.net/publication/261368027_Ground_Behaviour_Around_a_Tunnel_Using_Various_Soil_Models
institution	Universiti Malaysia Sarawak
building	Centre for Academic Information Services (CAIS)
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Sarawak
content_source	UNIMAS Institutional Repository
url_provider	http://ir.unimas.my/
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Namazi, Eshagh Hisham, Bin Mohamad Ahmad Kueh, Beng Hong Mohsen, Hajihassani Siti Norafida, Binti Jusoh Khaili Abad, Seyed Vahid Alavi Nezhad Ground Behaviour Around a Tunnel Using Various Soil Models
description	Finite Element (FE) analyses are used world widely in geotechnical engineering to obtain the soil displacement caused by tunnelling. The surface settlement induced by tunnelling predicted by FE is known to be wider and shallower than the field measurements particularly for stiff clays with high coefficient of earth pressure at rest, K0. It has been recognized that neglecting the non-linearity, anisotropy and threedimensional effects of the soil model as well as K0 condition can be the reasons of this discrepancy. Unfortunately, such numerical studies were only limited to the problem in the plane strain condition whereas tunnelling is obviously a three dimensional (3D) problem. This paper compares 3D FE modelling of tunnel constructions in stiff soil of London Clay using non-linear soil model with low and high K0 regimes. It was found that modelling using isotropic non-linear soil with low value of K0 gave the best matched-fit data on the observed greenfield surface settlement as opposed to the other soil models. In addition, the model is able to replicate the steady state condition of ground movement after the completion of tunnel construction that is when the tunnel face has passed seven times of the tunnel diameter beyond the boundary point. This steady-state condition is not possible to simulate using other soil models.
format	E-Article
author	Namazi, Eshagh Hisham, Bin Mohamad Ahmad Kueh, Beng Hong Mohsen, Hajihassani Siti Norafida, Binti Jusoh Khaili Abad, Seyed Vahid Alavi Nezhad
author_facet	Namazi, Eshagh Hisham, Bin Mohamad Ahmad Kueh, Beng Hong Mohsen, Hajihassani Siti Norafida, Binti Jusoh Khaili Abad, Seyed Vahid Alavi Nezhad
author_sort	Namazi, Eshagh
title	Ground Behaviour Around a Tunnel Using Various Soil Models
title_short	Ground Behaviour Around a Tunnel Using Various Soil Models
title_full	Ground Behaviour Around a Tunnel Using Various Soil Models
title_fullStr	Ground Behaviour Around a Tunnel Using Various Soil Models
title_full_unstemmed	Ground Behaviour Around a Tunnel Using Various Soil Models
title_sort	ground behaviour around a tunnel using various soil models
publisher	Researchgate Publication
publishDate	2012
url	http://ir.unimas.my/id/eprint/23108/1/Ground%20Behaviour%20Around%20a%20Tunnel%20Using%20Various%20Soil%20Models.....%20-%20Copy.pdf http://ir.unimas.my/id/eprint/23108/ https://www.researchgate.net/publication/261368027_Ground_Behaviour_Around_a_Tunnel_Using_Various_Soil_Models
_version_	1644513950761484288
score	13.211869

Ground Behaviour Around a Tunnel Using Various Soil Models

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