大断面顶管通道近接穿越下覆既有地铁隧道数值模拟与现场试验

doi:10.13722/j.cnki.jrme.2017.1214

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Abstract A pedestrian underpass in Nanjing was constructed using pipe jacking method，which traverses both the existing metro tunnels and an urban main road in short distance. In order to ensure the safety of the tunnels and the road，a 3D FEM model was established before construction to simulate the whole construction process and to predict the possible deformation of tunnels and ground settlement. Based on the simulation results，the targeted measures to reduce the deformation were put forward，and a reasonable field monitoring scheme of tunnels and ground surface deformation was proposed. The monitored items included the vertical displacement，horizontal displacement，diameter convergence of tunnel and the ground settlement. The variation of tunnel and ground deformation was analyzed based on the observed data and three different stages that tunnel and ground surface experienced during construction were proposed. The results indicate that the vertical displacements of tunnel are mainly manifested as heaving induced by the unloading in the underpass. The influence of excavation of working shafts on the vertical displacement of tunnels is almost negligible. In the whole construction process，the vertical displacement of tunnel mainly experiences an initial settlement stage，a quick heaving stage and a steady heaving stage. The ground settlement goes through a heaving enhancing stage，a heaving weakening stage and an absolute settlement stage. In the same monitoring section，the maximum ground settlement occurs on the central line of underpass，and the settlement decreases away from the central line. The slight under-excavation method applied in the construction is effective in reducing the ultimate tunnel heaving and ground settlement.

Key words： tunnelling engineering pipe jacking metro tunnel numerical simulation field monitoring

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	Articles by authors
	LIU Bo1
	2
	ZHANG Dingwen1
	2
	LIU Songyu1
	2
	QIN Yunjun3

Cite this article:

LIU Bo1,2,ZHANG Dingwen1, et al. Numerical simulation and field monitoring on a large cross-section pipe-jacking underpass traversing existing metro tunnels[J]. , 2017, 36(11): 2850-2860.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.1214 OR http://www.rockmech.org/EN/Y2017/V36/I11/2850

[22]	谢雄耀，郁宏杰，王庆国，等. 基坑开挖引起下卧既有电力隧道变形的控制技术研究[J]. 岩土工程学报，2014，36(1)：88-97.(XIE Xiongyao，YOU Hongjie，WANG Guoqing，et al. Deformation control of operating tunnels induced by deep excavation of overlying metro[J]. Chinese Journal of Geotechnical Engineering，2014，36(1)：88-97.(in Chinese)) " target="_blank">
[10]	YEN J，SHOU K. Numerical simulation for the estimation the jacking force of pipe jacking[J]. Tunnelling and Underground Space Technology，2015，49(6)：218-229. " target="_blank">
[12]	闫治国，朱合华，李向阳，等. 顶管同步顶进工作井稳定性三维数值分析[J]. 岩土工程学报，2005，27(8)：891-896.(YAN Zhiguo，ZHU Hehua，LI Xiangyang，et al. 3D-FEM analysis on stability of shaft with conduit jacked synchronously in two directions[J]. Chinese Journal of Geotechnical Engineering，2005，27(8)：891-896.(in Chinese))
[15]	ZHEN L，CHEN J J，QIAO P，et al. Analysis and remedial treatment of a steel pipe-jacking accident in complex underground environment[J]. Engineering Structures，2014，59：210-219. " target="_blank">
[16]	ZHANG P，MA B，ZENG C，et al. Key techniques for the largest curved pipe jacking roof to date：A case study of Gongbei tunnel[J]. Tunnelling and Underground Space Technology，2016，59(10)：134-145. " target="_blank">
[2]	MILLIGAN G，NORRIS P. Pipe-soil interaction during pipe jacking[J]. Proceedings of the ICE-Geotechnical Engineering，1999，137(1)：27-44. " target="_blank">
[4]	魏纲，徐日庆，屠玮. 顶管施工引起的土体扰动理论分析及试验研究[J]. 岩石力学与工程学报，2004，23(3)：476-482.(WEI Gang，XU Riqing，TU Wei. Testing study and analysis on soil disturbance induced by pipe 1acking construction[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(3)：476-482.(in Chinese))
[5]	SHIMADA H，SASAOKA T，KHAZAEI S，et al. Performance of mortar and chemical grout injection into surrounding soil when slurry pipe-jacking method is used[J]. Geotechnical and Geological Engineering，2006，24(1)：57-77.
[7]	SHOU K，YEN J，LIU M. On the frictional property of lubricants and its impact on jacking force and soil-pipe interaction of pipe-jacking[J]. Tunnelling and Underground Space Technology，2010，25(4)：469-477.
[9]	BARLA M，CAMUSSO M，AIASSA S. Analysis of jacking forces during microtunnelling in limestone[J]. Tunnelling and Underground Space Technology，2006，21(6)：668-683. " target="_blank">
[14]	CUI Q L，XU Y S，SHEN S L，et al. Field performance of concrete pipes during jacking in cemented sandy silt[J]. Tunnelling and Underground Space Technology，2015，49(6)：336-344. " target="_blank">
[17]	WANG H，QIN W M，JIAO Y Y. Stability assessment for highway with large-span box culvert jacking underneath：a case study[J]. Canadian Geotechnical Journal，2013，50(6)：585-594.
[19]	郑刚，杜一鸣，刁钰，等. 基坑开挖引起邻近既有隧道变形的影响区研究[J]. 岩土工程学报，2016，38(4)：599-612.(ZHENG Gang，DU Yiming，DIAO Yu，et al. Study on the influenced zones for deformation of existing tunnels adjacent to the excavation[J]. Chinese Journal of Geotechnical Engineering，2016，38(4)：599-612.(in Chinese))
[20]	中华人民共和国国家标准编写组. GB 50911—2013城市轨道交通工程监测技术规范[S]. 北京：中国建筑工业出版社，2013.(The National Standards Compilation Group of People?s Republic of China. GB 50911—2013 Code for monitoring measurement of urban rail transit engineering[S]. Beijing：China Architecture and Building Press，2013.(in Chinese)) " target="_blank">
[24]	许有俊，文中坤，闫履顺，等. 多刀盘土压平衡矩形顶管隧道土体改良试验研究[J]. 岩土工程学报，2016，38(2)：288-296.(XU Youjun，WEN Zhongkun，YAN Lüshun，et al. Experimental study on soil improvement during construction of EPB rectangular pipe jacking with muti-cutter[J]. Chinese Journal of Geotechnical Engineering，2016，38(2)：288-296.(in Chinese))
[25]	荣亮，杨红军. 郑州市下穿中州大道超大断面矩形顶管隧道施工沉降控制技术[J]. 隧道建设，2015，35(增2)：1 338-1 344.(RONG Liang，YANG Hongjun. Settlement control technology for tunnel crossing underneath Zhongzhou Avenue in Zhengzhou constructed by super-large rectangular cross-section pipe jacking machine[J]. Tunnel Construction，2015，35(Supp. 2)：1 338-1 344.(in Chinese))
[27]	叶耀东. 大断面矩形顶管近距离上穿地铁隧道变形控制探讨[J]. 城市道桥与防洪，2015，(7)：203-205.(YE Yaodong. Discussion on deformation control of subway tunnel by large section rectangular pipe jacking crossing in close distance[J]. Urban Roads Bridges and Flood Control，2015，(7)：203-205.(in Chinese)) " target="_blank">
[8]	史培新，俞蔡城，潘建立，等. 拱北隧道大直径曲线管幕顶管顶力研究[J]. 岩石力学与工程学报，2017，36(9)：2 251-2 259.(SHI Peixin，YU Caicheng，PAN Jianli，et al. Analysis on the jacking load of the curved pipe roof supporting the large diameter Gongbei tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(9)：2 251-2 259.(in Chinese))
[11]	SUN Y，SHEN S，XU Z，et al. Prediction of lateral displacement of soil behind the reaction wall caused by pipe jacking operation[J]. Tunnelling and Underground Space Technology，2014，40(2)：210-217. " target="_blank">
[13]	SHEN S L，CUI Q L，HO C E，et al. Ground response to multiple parallel microtunneling operations in cemented silty clay and sand[J]. Journal of Geotechnical and Geoenvironmental Engineering，2016，142(5)：04016001. " target="_blank">
[21]	郑刚，杜一鸣，刁钰. 隔离桩对基坑外既有隧道变形控制的优化分析[J]. 岩石力学与工程学报，2015，34(增1)：3 499-3 509. (ZHENG Gang，DU Yiming，DIAO Yu. Optimization analysis of efficiency of isolation piles in controlling the deformation of existing tunnels adjacent to deep excavation[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(Supp.1)：3 499-3 509.(in Chinese))
[3]	房营光，莫海鸿，张传英. 顶管施工扰动区土体变形的理论与实测分析[J]. 岩石力学与工程学报，2003，22(4)：601-605.(FANG Yingguang，MO Haihong，ZHANG Chuanying. Theoretic and testing analysis of soil deformation in the area of disturbance caused by pipe-jacking[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(4)：601-605.(in Chinese))
[6]	ZHOU S，WANG Y，HUANG X. Experimental study on the effect of injecting slurry inside a jacking pipe tunnel in silt stratum[J]. Tunnelling and Underground Space Technology，2009，24(4)：466-471.
[23]	黎永索，张可能，黄常波，等. 管幕预筑隧道地表沉降分析[J]. 岩土力学，2011，32(12)：3 701-3 707.(LI Yongsuo，ZHANG Keneng，HUANG Changbo，et al. Analysis of surface subsidence of tunnel built by pipe-roof pre-construction method[J]. Rock and Soil Mechanics，2011，32(12)：3 701-3 707.(in Chinese)) " target="_blank">
[1]	魏纲，魏新江，徐日庆. 顶管工程技术[M]. 北京：化学工业出版社，2011：1.(WEI Gang，WEI Xinjiang，XU Riqing. Pipe jacking engineering technique[M]. Beijing：Chemical Industry Press，2011：1.(in Chinese)) " target="_blank">
[18]	龚晓南. 地基处理手册[M]. 北京：中国建筑工业出版社，2008：482.(GONG Xiaonan. Ground improvement manual[M]. Beijing：China Architecture and Building Press，2008：482.(in Chinese)) " target="_blank">
[26]	王晓睿，张振，郭佳. 超大断面矩形顶管隧道施工动态变形规律[J]. 地球科学，2016，41(11)：1 959-1 965.(WANG Xiaorui，ZHANG Zhen，GUO Jia. Dynamic deformation of the oversized cross-section rectangular pipe-jacking tunnel[J]. Earth Science，2016，41(11)：1 959-1 965.(in Chinese))