Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration

A large number of shallow buried tunnels are built in the city nowadays and the special strata such as large upper-soft and lower-hard ground often encountered. Deformation control of strata is the focus issue related to the construction safety. Based on Dalian metro Hing Street station with the cla...

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Main Authors:	Shang, Yanliang, Du, Shouji, Han, Tongyin, Shao, Biao
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:	http://journalarticle.ukm.my/11675/ http://journalarticle.ukm.my/11675/ http://journalarticle.ukm.my/11675/1/09%20SM46%2011.pdf

id	ukm-11675
recordtype	eprints
spelling	ukm-116752018-05-28T00:48:06Z http://journalarticle.ukm.my/11675/ Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration Shang, Yanliang Du, Shouji Han, Tongyin Shao, Biao A large number of shallow buried tunnels are built in the city nowadays and the special strata such as large upper-soft and lower-hard ground often encountered. Deformation control of strata is the focus issue related to the construction safety. Based on Dalian metro Hing Street station with the classical geological condition of upper-soft and lower-hard ground, this paper fully used a combined control method including six different support measures to control the deformation of surrounding rock. 3D finite element model was setup to analyze the construction effect of combined control measures and the monitoring in-site was carried out to verify the deformation control effect of combined control method. It shows that the maximum surface subsidence value is gradually reduced with the support measures gradually increasing. In the case of various supports the maximum sedimentation value is 2.67 cm, which is 42. 1% lower than that of not using control method and the control effect is obvious. In addition, it can be seen that the two-layer initial support and additional large arch foot have the best effect on controlling the ground surface settlement with reduction of 11.7% and 20.2%, respectively. The research results can provide practical experience for the construction of such tunnels, and guide the design and construction of the tunnel in the future. Penerbit Universiti Kebangsaan Malaysia 2017-11 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11675/1/09%20SM46%2011.pdf Shang, Yanliang and Du, Shouji and Han, Tongyin and Shao, Biao (2017) Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration. Sains Malaysiana, 46 (11). pp. 2091-2099. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num11_2017/contentsVol46num11_2017.htm
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	A large number of shallow buried tunnels are built in the city nowadays and the special strata such as large upper-soft and lower-hard ground often encountered. Deformation control of strata is the focus issue related to the construction safety. Based on Dalian metro Hing Street station with the classical geological condition of upper-soft and lower-hard ground, this paper fully used a combined control method including six different support measures to control the deformation of surrounding rock. 3D finite element model was setup to analyze the construction effect of combined control measures and the monitoring in-site was carried out to verify the deformation control effect of combined control method. It shows that the maximum surface subsidence value is gradually reduced with the support measures gradually increasing. In the case of various supports the maximum sedimentation value is 2.67 cm, which is 42. 1% lower than that of not using control method and the control effect is obvious. In addition, it can be seen that the two-layer initial support and additional large arch foot have the best effect on controlling the ground surface settlement with reduction of 11.7% and 20.2%, respectively. The research results can provide practical experience for the construction of such tunnels, and guide the design and construction of the tunnel in the future.
format	Article
author	Shang, Yanliang Du, Shouji Han, Tongyin Shao, Biao
spellingShingle	Shang, Yanliang Du, Shouji Han, Tongyin Shao, Biao Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration
author_facet	Shang, Yanliang Du, Shouji Han, Tongyin Shao, Biao
author_sort	Shang, Yanliang
title	Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration
title_short	Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration
title_full	Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration
title_fullStr	Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration
title_full_unstemmed	Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration
title_sort	case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2017
url	http://journalarticle.ukm.my/11675/ http://journalarticle.ukm.my/11675/ http://journalarticle.ukm.my/11675/1/09%20SM46%2011.pdf
first_indexed	2023-09-18T20:00:53Z
last_indexed	2023-09-18T20:00:53Z
_version_	1777406840132337664

Case study on deformation control of upper-soft and lower-hard large span tunnel station using combined control technology and monitoring demonstration

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