考虑管片环间接头弱化的新建隧道上穿引起既有盾构隧道纵向变形分析

doi:10.13722/j.cnki.jrme.2021.0275

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Abstract Exploring the longitudinal deformation mechanism of the existing shield due to construction of new tunnel above is significant to assess the adverse impacts of above-crossing tunnelling on the existing shield tunnel. Current analytical methods commonly simplify the existing shield tunnel as an equivalent continuous beam resting on a linear elastic foundation，of which will overlook the weakening of circumferential joint and the nonlinear deformation characteristics of the ground. Firstly，the joint discontinuous shield tunnel model and the nonlinear Pasternak foundation model are adopted to consider the weakening of circumferential joint and the tunnel-soil nonlinear interaction. The differential equation for shield tunnel longitudinal deformation owing to above-crossing tunnelling is derived. Secondly，the numerical solution for shield tunnel longitudinal deformation is solved using the finite difference method and the Newton?s iteration method. Finally，the predictions from the proposed method are compared with two field cases and the results predicted by the current equivalent continuous beam model. It shows that the longitudinal deformation and the bending moment based on the equivalent continuous beam model express continuous characteristics. While the longitudinal deformation and the bending moment predicted by the proposed method can reflect the discontinuous characteristics，because the weakening of circumferential joint is considered by the proposed method. The results obtained by the proposed method is much closer to the real shield tunnel deformation characteristics. Through the parametric analyses，it is found that increasing the clearance distance between the new and old tunnels will effectively reduce the tunnel heave，bending moment and joint opening. By increasing the length of segment ring，the tunnel heave will decrease slightly，but the joint opening and bending moment will increase. To increasing the stiffness of the circumferential joint will effectively lead to the decrease of tunnel vertical displacement and opening of joint，but it will increase the bending moment of tunnel.

Key words： tunnelling engineering weakening of circumferential joint above-crossing tunnelling existing shield tunnel joint discontinuous shield tunnel model nonlinear foundation model

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	Articles by authors
	ZHANG Zhiwei1
	LIANG Rongzhu1
	GAO Kun2
	3
	LI Zhongchao4
	XIAO Mingzhao4
	GUO Yang2
	3
	YUE Tengsheng2
	3
	WU Wenbing1

Cite this article:

ZHANG Zhiwei1,LIANG Rongzhu1,GAO Kun2, et al. Analysis of longitudinal displacement of existing shield tunnel due to construction of above-crossing new tunnel considering the weakening of circumferential joint[J]. , 2022, 41(S1): 2955-2970.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0275 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/IS1/2955

[1] 中国城市轨道交通协会. 2020年中国内地城轨交通线路概况[N]. 中国城市轨道交通协会信息快报，2021–01–01(01).(China Urban Rail Transit Association. Overview of urban rail transit lines in mainland China in 2020[N]. China Urban Rail Transit Association Information Bulletin，2021–01–01(01).(in Chinese))
[2] HANSMIRE W H，PARKER H W，GHAHOUSSI J，et al. Effects of shield tunnelling over subways[C]// Proceedings of the Third Rapid Excavation and Tunnelling Conference. [S. l.]：[s. n.]，1981：224–276.
[3] GHABOUSSI J，HANSMIRE W H，PARKER H W，et al. Finite element simulation of tunneling over subways[J]. Journal of Geotechnical Engineering，1983，109(3)：318–334.
[4] ZHANG D W，LIU BO，QIN Y J. Construction of a large-section long pedestrian underpass using pipe jacking in muddy silty clay：A case study[J]. Tunneling and Underground Space Technology，2016，60(11)：151–164.
[5] 王剑晨，张顶立，张成平，等. 浅埋暗挖车站上穿施工影响的既有隧道变形规律[J]. 北京交通大学学报，2014，38(1)：8–12.(WANG Jianchen，ZHANG Dingli，ZHANG Chengping，et al. Existing tunnel?s deformation of superincumbent subway station induced by approaching excavation in shallow depth[J]. Journal of Beijing Jiaotong University，2014，38(1)：8–12.(in Chinese))
[6] 刘建国，徐添华，宋程鹏. 滨海软土层新建地铁盾构隧道近距离上跨既有地铁隧道修建技术[J]. 现代隧道技术，2019，56(4)：160– 166.(LIU Jianguo，XU Tianhua，SONG Chengpeng. Construction techniques of shield tunnels approaching existing metro tunnels in soft ground at seafront areas[J]. Modern Tunneling Technology，2019，56(4)：160–166.(in Chinese))
[7] 黄德中，马险峰，王俊淞，等. 软土地区盾构上穿越既有隧道的离心模拟研究[J]. 岩土工程学报，2012，34(3)：520–526.(HUANG Dezhong，MA Xianfeng，WANG Junsong，et al. Centrifuge modelling of effects of shield tunnels on existing tunnels in soft clay[J]. Chinese Journal of Geotechnical Engineering，2012，34(3)：520–526.(in Chinese))
[8] LI P，DU S J，MA X F，et al. Centrifuge investigation into the effect of new shield tunnelling on an existing underlying large-diameter tunnel[J]. Tunnelling and Underground Space Technology，2014，42(5)：59–66.
[9] 张晓清，张孟喜，李林，等. 多线叠交盾构隧道近距离穿越施工扰动机制研究[J]. 岩土力学，2017，38(4)：1 133–1 140.(ZHANG Xiaoqing，ZHANG Mengxi，LI Lin，et al. Mechanism of approaching construction disturbance caused by multi-line overlapped shield tunneling[J]. Rock and Soil Mechanics，2017，38(4)：1 133–1 140.(in Chinese))
[10] LIU H Y，SMALL J C，CARTER J P，et al. Effects of tunnelling on existing support systems of perpendicularly crossing tunnels[J]. Computers and Geotechnics，2009，36(5)：880–894.
[11] 刘树佳，张孟喜，吴惠明，等. 新建盾构隧道上穿对既有隧道的变形影响分析[J]. 岩土力学，2013，34(增1)：399–405.(LIU Shujia，ZHANG Mengxi，WU Huiming，et al. Deformation effect on existing tunnels overlapped by new tunnel in lower-region[J]. Rock and Soil Mechanics，2013，34(Supp.1)：399–405.(in Chinese))
[12] 张孟喜，张靖，吴应明，等. 全风化岩层中双线盾构上穿近邻地铁隧道影响分析[J]. 土木工程学报，2019，52(9)：100–108. (ZHANG Mengxi，ZHANG Jing，WU Yingming，et al. Analysis of double-line shield tunnel over-crossing subway tunnel in completely weathered rock formation[J]. China Civil Engineering Journal，2019，52(9)：100–108.(in Chinese))
[13] 许有俊，陶连金，文中坤，等. 新建地铁隧道上穿既有隧道引起的结构隆起变形[J]. 中国铁道科学，2014，35(6)：48–54.(XU Youjun，TAO Lianjin，WEN Zhongkun，et al. Upheaval deformation induced by newly-build metro tunnel up crossing existing tunnel[J]. China Railway Science，2014，35(6)：48–54.(in Chinese))
[14] LIANG R Z，XIA T D，HONG Y，et al. Effects of Above-crossing tunnelling on the existing shield tunnels[J]. Tunnelling and Underground Space Technology，2016，58：159–176.
[15] 梁荣柱，夏唐代，胡军华，等. 新建隧道近距离上穿对既有地铁隧道纵向变形影响分析[J]. 岩土力学，2016，37(增1)：391–399. (LIANG Rongzhu，XIA Tangdai，HU Junhua，et al. Analysis of longitudinal displacement of existing metro tunnel due to construction of above-crossing new tunnel in close distance[J]. Rock and Soil Mechanics，2016，37(Supp.1)：391–399.(in Chinese))
[16] 李凯梁. 新建隧道上穿工程对既有地铁隧道纵向隆起变形影响研究[硕士学位论文][D]. 深圳：哈尔滨工业大学(深圳)，2017.(LI Kailiang. Study on the effect of the new tunnel crossing project on the vertical bulging deformation of the existing subway tunnel[M. S. Thesis][D]. Shenzhen：Harbin Institute of Technology(Shenzhen)，2017.(in Chinese))
[17] LIANG R. Simplified analytical method for evaluating the effects of overcrossing tunnelling on existing shield tunnels using the nonlinear Pasternak foundation model[J]. Soils and Foundations，2019，59(6)：1 711–1 727.
[18] 康成，叶超，梁荣柱，等. 基坑开挖诱发下卧盾构隧道纵向非线性变形研究[J]. 岩石力学与工程学报，2020，39(11)：2 341–2 350. (KANG Cheng，YE Chao，LIANG Rongzhu，et al. Nonlinear longitudinal deformation of underlying shield tunnel induced by excavation[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(11)：2 341–2 350.(in Chinese))
[19] 魏纲，俞国骅，杨波. 新建隧道上穿既有隧道引起的剪切错台变形研究[J]. 自然灾害学报，2018，27(4)：50–58.(WEI Gang，YU Guohu，YANG Bo. Study on shearing dislocation platform deformation of existing tunnel due to construction of above-crossing new tunnel[J]. Journal of Natural Disasters，2018，27(4)：50–58.(in Chinese))
[20] ALA. Guidelines for the design of buried steel pipe[R]. [S. l.]：American Lifelines Alliance，2005.
[21] 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.
[22] 魏纲，张鑫海，徐银锋. 考虑多因素的类矩形盾构施工引起土体竖向位移研究[J]. 岩石力学与工程学报，2018，37(1)：199–208. (WEI Gang，ZHANG Xinhai，XU Yinfeng. Deriving vertical displacement of ground due to quasi-rectangular shield tunneling considering multiple factors[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(1)：199–208.(in Chinese))
[23] 孙廉威. 外界荷载作用下已建盾构隧道结构性状[博士学位论文][D]. 杭州：浙江大学，2016.(SUN Lianwei. Shield tunnel structure behavior under external load[Ph. D. Thesis][D]. Hangzhou：Zhejaing University，2016.(in Chinese))
[24] 志波由纪夫，川島一彦，大日方尚己. 応答変位法によるシ― ルドトソネルの地震时断面力の算定法[C]// 土木学会論文集. [S. l.]： [s. n.]，1989：385–394.
[25] LEE K M，JI H W，SHEN C K，et al. Ground response to the construction of Shanghai metro tunnel-line 2[J]. Soils and Foundations，1999，39(3)：113–134.
[26] 中华人民共和国行业标准编写组. GJJ/T 202—2013城市轨道交通结构安全保护技术规范[S]. 北京：中国建筑工业出版社，2013.(The Professional Standards Compilation Group of People?s Republic of China. GJJ/T 202—2013. Technical code for structural safety protection of urban rail transit[S]. Beijing：China Construction Industry Press，2013.(in Chinese))