Effect of Longitudinal Gradient on 3D Face Stability of Circular Tunnel in Undrained Clay

doi:10.1155/2020/5846151

	Effect of Longitudinal Gradient on 3D Face Stability of Circular Tunnel in Undrained Clay
	Wang, Zhengxing 2; Wang, Yuke 3,4; Wang, Shumao 5; Li, Bin 1,6,7; Wang, Hu 2
刊名	ADVANCES IN CIVIL ENGINEERING
	2020-08-19
卷号	2020 页码:12
ISSN号	1687-8086
DOI	10.1155/2020/5846151
英文摘要	The longitudinal gradient existed in shield-driven tunnel crossing river or channel has a longitudinal gradient, which is often ignored in most stability analyses of the tunnel face. Considering the influence of the longitudinal gradient into A(a) continuous velocity field, the present paper, conducting a limit analysis of the tunnel face in undrained clay, adopted to yield the upper-bound solutions of the limit pressure supporting on a three-dimensional tunnel face. The least upper bounds of the collapse and blow-out pressures can be obtained by conducting an optimization procedure. These upper-bound solutions are given in the design charts, which provide a simple way to assess the range of the limit pressure in practice. The influence of the longitudinal gradient becomes more significant with the increase of gamma D/s(u) and C/D. The blow-out pressure for tunneling in a downward movement could be overestimated and the collapse pressure for tunneling in an upward movement could be conversely underestimated, with ignoring the influence of the longitudinal gradient.
资助项目	National Key Research and Development Program of China[2019YFC1510803-2] ; Open Foundation of Key Laboratory of Port Geotechnical Engineering, Ministry of Communications, PRC[17-39] ; Integration and Demonstration of Tunnel Water Disaster Prevention Technology[172107000032] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering ; Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[017012] ; Key Research Projects of Higher Education in Henan Province[20A56002]
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	HINDAWI LTD
WOS记录号	WOS:000567123200003
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24776]
专题	中科院武汉岩土力学所
通讯作者	Wang, Yuke
作者单位	1.CCCC First Harbor Engn Co Ltd, Tianjin, Peoples R China 2.Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210098, Peoples R China 3.Zhengzhou Univ, Coll Water Conservancy & Engn, Zhengzhou 450001, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 5.China Power Engn Consulting Grp, East China Elect Power Design Inst, Shanghai 200063, Peoples R China 6.CCCC First Harbor Engn Co Ltd, Tianjin Port Engn Inst Ltd, Tianjin, Peoples R China 7.Minist Commun, Key Lab Port Geotech Engn, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhengxing,Wang, Yuke,Wang, Shumao,et al. Effect of Longitudinal Gradient on 3D Face Stability of Circular Tunnel in Undrained Clay[J]. ADVANCES IN CIVIL ENGINEERING,2020,2020:12.
APA	Wang, Zhengxing,Wang, Yuke,Wang, Shumao,Li, Bin,&Wang, Hu.(2020).Effect of Longitudinal Gradient on 3D Face Stability of Circular Tunnel in Undrained Clay.ADVANCES IN CIVIL ENGINEERING,2020,12.
MLA	Wang, Zhengxing,et al."Effect of Longitudinal Gradient on 3D Face Stability of Circular Tunnel in Undrained Clay".ADVANCES IN CIVIL ENGINEERING 2020(2020):12.