软土地层盾构隧道施工引起的地面隆陷研究

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Abstract Additional thrust at the excavation face，friction force imposed on the around soils by shield skin and excess pressure of tail grouting can cause ground surface movements. Based on Mindlin solution，ground surface displacements induced by these three forces are calculated through numerical integration. The calculation results are verified by case studies of in-situ monitored ground surface movements in construction of Hangzhou Qingchun road river-crossing tunnel. The analysis results indicate that superposition of ground loss settlement and calculated movements due to above three forces based on Mindlin solution can be used to predict ground surface heave and subsidence induced by shield tunnelling. Ground surface heave of cross-section caused by shield tail synchronous grouting accords with Gaussian distribution. A modified Peck equation taking grouting impact into account is proposed. Compared with the conversional Peck method，modified Peck equation is able to predict ground surface heave induced by shield tunnelling；and the fitting parameters of ground surface subsidence through back analysis are more accurate.

Key words： soil mechanics Mindlin solution slurry shield tunnelling construction ground surface heave and subsidence Peck equation

Received: 22 July 2011

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http://www.rockmech.org/EN/Y2011/V30/I12/2583

[1]	PECK R B. Deep excavations and tunneling in soft ground[C]// Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering. Mexico：[s.n.]，1969：225-290. " target="_blank">
[3]	VERRUIJT A，BOOKER J R. Surface settlements due to deformation of a tunnel in an elastic halfplane[J]. Géotechnique，1996，46(4)：753-756. " target="_blank">
[6]	PARK K H. Analytical solution for tunnelling-induced ground movement in clays[J]. Tunnelling and Underground Space Technology，2005，20(3)：249-261. " target="_blank">
[8]	POULOS H G，DAVIS E H. Elastic solutions for soil and rock mechanics[M]. New York：John Wiley and Sons，Inc.，1974：16-20. " target="_blank">
[10]	SUGIYAMA T，HAGIWARA T，NOMOTO T，et al. Observations of ground movements during tunnel construction by slurry shield method at the docklands light railway Lewisham extension-east London[J]. Soils and Foundations，1999，39(3)：99-112. " target="_blank">
[12]	张冬梅，黄宏伟，林平，等. 地铁盾构推进引起周围土体附加应力的分析[J]. 地下空间，1999，19(5)：379-394.(ZHANG Dongmei，HUANG Hongwei，LIN Ping，et al. Additional stresses of surrounding soils induced by metro shield tunneling[J]. Underground Space，1999，19(5)：379-394.(in Chinese) " target="_blank">
[14]	黄宏伟，胡昕. 顶管施工力学效应的数值模拟分析[J]. 岩石力学与工程学报，2003，22(3)：400-406.(HUANG Hongwei，HU Xin. 3D numerical analysis of construction mechanics effect of pipe- jacking[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(3)：400-406.(in Chinese))
[16]	施成华. 城市隧道施工地层变形时空统一预测理论及应用研究[博士学位论文][D]. 长沙：中南大学土木建筑学院，2007：75-131. (SHI Chenghua. Study on time-space united calculating theory of stratum deformation for tunnel excavation in urban and its application[Ph. D. Thesis][D]. Changsha：College of Civil Engineering and Architecture，Central South University，2007：75-131.(in Chinese)) " target="_blank">
[20]	吴勃英. 数值分析原理[M]. 北京：科学出版社，2004：20-62.(WU Boying. Principles of numerical analysis[M]. Beijing：Science Press，2004：20-62.(in Chinese)) " target="_blank">
[2]	SAGASETA C. Analysis of undrained soil deformation due to ground loss[J]. Géotechnique，1987，37(3)：301-320. " target="_blank">
[11]	LECA E，NEW B. Settlements induced by tunneling in soft ground[J]. Tunnelling and Underground Space Technology，2007，22(2)：119-149.
[15]	魏纲，徐日庆. 软土隧道盾构法施工引起的纵向地面变形预测[J]. 岩土工程学报，2005，27(9)：1 077-1 081.(WEI Gang，XU Riqing. Prediction of longitudinal ground deformation due to tunnel construction with shield in soft soil[J]. Chinese Journal of Geotechnical Engineering，2005，27(9)：1 077-1 081.(in Chinese)) " target="_blank">
[4]	LOGANATHAN N，POULOS H G. Analytical prediction for tunneling-induced ground movements in clays[J]. Journal of Geotechnical and Geoenvironmental Engineering，1998，124(9)：846-856. " target="_blank">
[7]	MINDLIN R D. Force at a point in the interior of a semi-infinite solid[J]. Journal of Applied Physics，1936，7(5)：195-202. " target="_blank">
[9]	HASHIMOTO T，NAGAYA J，KONDA T. Prediction of ground deformation due to shield excavation in clayey soils[J]. Soils and Foundations，1999，39(3)：53-61. " target="_blank">
[13]	胡昕，黄宏伟. 相邻平行顶管推进引起附加荷载的力学分析[J]. 岩土力学，2001，22(1)：75-77.(HU Xin，HUANG Hongwei. Mechanics analysis of superimposed load introduced by propulsion of adjacent parallel pipe[J]. Rock and Soil Mechanics，2001，22(1)：75-77.(in Chinese) " target="_blank">
[17]	施成华，彭立敏，雷明锋. 盾构法施工隧道地层变形时空统一预测方法研究[J]. 岩土力学，2009，30(8)：2 379-2 384.(SHI Chenghua，PENG Limin，LEI Mingfeng. Study of time-space united calculating method of stratum deformation caused by shield tunnel excavation[J]. Rock and Soil Mechanics，2009，30(8)：2 379-2 384.(in Chinese)) " target="_blank">
[21]	许宏发，吴华杰，郭少平，等. 桩土接触面单元参数分析[J]. 探矿工程：岩土钻掘工程，2002，(5)：10-12.(XU Hongfa，WU Huajie，GUO Shaoping，et al. Study on the parameters of pile-soil contact surface element[J]. Exploration Engineering：Rock and Soil Drilling and Tunneling，2002，(5)：10-12.(in Chinese)) " target="_blank">
[18]	齐静静，徐日庆，魏纲，等. 隧道盾构法施工引起周围土体附加应力分析[J]. 岩土力学，2008，29(2)：529-544.(QI Jingjing，XU Riqing，WEI Gang，et al. Analysis of superimposed stress of surrounding soil due to shield tunneling[J]. Rock and Soil Mechanics，2008，29(2)：529-544.(in Chinese)) " target="_blank">
[22]	陈禹臻，曹丽娟，李守巨，等. 盾构机掘进过程中受力平衡分析[J]. 工程建设，2010，42(5)：1-5.(CHEN Yuzhen，CAO Lijuan，LI Shouju，et al. Analysis of stress balance of shield machine in tunneling[J]. Engineering Construction，2010，42(5)：1-5.(in Chinese)) " target="_blank">
[5]	CHI，S Y，CHERN J C，LIN C C. Optimized back-analysis for tunneling-induced ground movement using equivalent ground loss model[J]. Tunnelling and Underground Space Technology，2001，16(3)：159-165. " target="_blank">
[19]	唐晓武，朱季，刘维，等. 盾构施工过程中的土体变形研究[J]. 岩石力学与工程学报，2010，29(2)：417-422.(TANG Xiaowu，ZHU Ji，LIU Wei，et al. Research on soil deformation during shield construction process[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(2)：417-422.(in Chinese))