遮拦叠交效应下地铁盾构掘进引起地层沉降分析

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Abstract Ground settlements and underground structure deformation induced by subway tunneling are hot issues in the underground transportation construction safety control and risk assessments. Previous researches on ground settlements are basically concentrated on the soil free displacements，and the sheltering effects of adjacent existing underground structures are not considered. Based on the Shanghai tunneling case，the ground settlement rules induced by earth pressure balance(EPB) shield considering sheltering effects of tunnels in service are presented by using simplified analytical method，3D finite element(FE) numerical simulation method，and in-situ monitoring method. An in-depth analysis is conducted between ground settlements considering sheltering effects and those considering free soil displacements. In addition，the predicted deformation of subway tunnel induced by EPB shield during complex overlapped traversing process is also presented. It is observed that the simplified analytical method and 3D finite element method can perfectly simulate the ground movements induced by subway shield excavation considering sheltering overlapped effects. Furthermore，the sheltering effects have a major influence on ground settlements induced by EPB shield when the tunnels are excavated in the vicinity of existing buildings and structures. The differences compared with the results considering free soil displacements are obtained. Finally，the deformation controlling technical measures considering sheltering overlapped effects are proposed in combination of in-situ monitoring data. It may provide certain basis to build up correctly protective measures of geotechnical environments influenced by subway tunneling，especially the sites adjacent to existing buildings and structures.

Key words： tunneling engineering sheltering effect ground settlement underground structure deformation simplified analytical method 3D FE simulations in-situ monitoring

Received: 02 May 2013

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/I9/1750

[1] 黄茂松，王卫东，郑刚. 软土地下工程与深基坑研究进展[J]. 土木工程学报，2012，45(6)：146–161.(HUANG Maosong，WANG Weidong，ZHENG Gang. A review of recent advances in the underground engineering and deep excavations in soft soils[J]. China Civil Engineering Journal，2012，45(6)：146–161.(in Chinese)) [2] PECK R B. Deep excavations and tunneling in soft ground[C]// Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering. Mexico City：[s. n.]，1969：225–290. [3] SAGASETA C. Analysis of undrained soil deformation due to ground loss[J]. Geotechnique，1988，38(4)：647–649. [4] VERRUIJT A，BOOKER J R. Surface settlements due to deformation of a tunnel in an elastic half plane[J]. Geotechnique，1996，46(4)：753–756. [5] 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. [6] VERRUIJT A. A complex variable solution for a deforming circular tunnel in an elastic half plane[J]. International Journal for Numerical and Analytical Methods in Geomechanics，1997，21(2)：77–89. [7] VERRUIJT A. Deformations of an elastic half plane with a circular cavity[J]. International Journal of Solids and Structures，1998，35(21)：2 795–2 804. [8] PARK K H. Elastic solution for tunneling-induced ground movements in clays[J]. International Journal of Geomechanics，2004，4(4)：310–318. [9] PARK K H. Analytical solution for tunneling-induced ground movement in clays[J]. Tunnelling and Underground Space Technology，2005，20(3)：249–261. [10] YANG X L，WANG J M. Ground movement prediction for tunnels using simplified procedure[J]. Tunnelling and Underground Space Technology，2011，26(3)：462–471. [11] 张治国，黄茂松，王卫东. 邻近开挖对既有软土隧道的影响分析[J]. 岩土力学，2009，30(5)：1 373–1 380.(ZHANG Zhiguo，HUANG Maosong，WANG Weidong. Responses of existing tunnels induced by adjacent excavation in soft soils[J]. Rock and Soil Mechanics，2009，30(5)：1 373–1 380.(in Chinese)) [12] 黄茂松，张治国，王卫东. 基于位移控制边界单元法盾构隧道开挖引起分层土体变形分析[J]. 岩石力学与工程学报，2009，28(12)：2 544–2 555.(HUANG Maosong，ZHANG Zhiguo，WANG Weidong. Response analysis of shield tunnelling-induced layered soil deformation based on deformation controlled boundary element method[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(12)：2 544–2 555.(in Chinese)) [13] 张治国，黄茂松，王卫东. 隧道开挖对层状地基中邻近管道影响的DCBEM-FEM耦合方法[J]. 岩土工程学报，2011，33(10)：1 554– 1 561.(ZHANG Zhiguo，HUANG Maosong，WANG Weidong. DCBEM-FEM coupling method for response analysis of adjacent pipelines due to tunneling[J]. Chinese Journal of Geotechnical Engineering，2011，33(10)：1 554–1 561.(in Chinese)) [14] THOMAS K，GUNTHER M. A numerical study of the effect of soil and grout material properties and cover depth in shield tunneling[J]. Computers and Geotechnics，2006，33(4/5)：234–247. [15] GUI M W，CHEN S L. Estimation of transverse ground surface settlement induced by DOT shield tunneling[J]. Tunnelling and Underground Space Technology，2013，33(1)：119–130. [16] 于宁，朱合华. 盾构隧道施工地表变形分析与三维有限元模拟[J]. 岩土力学，2004，25(8)：1 330–1 334.(YU Ning，ZHU Hehua. Analysis of earth deformation caused by shield tunnel construction and 3D-FEM simulation[J]. Rock and Soil Mechanics，2004，25(8)：1 330–1 334.(in Chinese)) [17] 楼晓明，郑俊杰，章荣军. 隧道施工引起的地表变形数值模拟[J]. 铁道工程学报，2007，108(9)：62–66.(LOU Xiaoming ZHENG Junjie，ZHANG Rongjun. Simulation of numerical values of surface deformation caused by tunnel construction[J]. Journal of Railway Engineering Society，2007，108(9)：62–66.(in Chinese)) [18] ADDENBROOKE T I，POTTS D M. Twin tunnel interaction：surface and subsurface effects[J]. International Journal of Geomechanics，2001，1(2)：249–271. [19] NG C W W，LEE K M，TANG D K W. Three-dimensional numerical investigations of new Austrian tunneling method(NATM) twin tunnel interactions[J]. Canadian Geotechnical Journal，2004，41(3)：523–539. [20] CHEHADE F H，SHAHROUR I. Numerical analysis of the interaction between twin-tunnels：influence of the relative position and construction procedure[J]. Tunnelling and Underground Space Technology，2008，23(2)：210–214. [21] 毕继红，刘伟，江志峰. 隧道开挖对地下管线的影响分析[J]. 岩土力学，2006，27(8)：1 317–1 321.(BI Jihong，LIU Wei，JIANG Zhifeng. Analysis of effects of tunnel excavation on underground pipeline[J]. Rock and Soil Mechanics，2006，27(8)：1 317–1 321.(in Chinese)) [22] 孔祥兴，夏才初，仇玉良，等. 平行小净距盾构与CRD法黄土地铁隧道施工力学研究[J]. 岩土力学，2011，32(2)：516–524.(KONG Xiangxing，XIA Caichu，QIU Yuliang，et al. Study of construction mechanical behavior of parallel-small spacing metro tunnels excavated by shield method and cross diaphragm(CRD) method in loess region[J]. Rock and Soil Mechanics，2011，32(2)：516–524.(in Chinese)) [23] LITWINISZYN J. Przemieszczenia górotworu w ?wietle teorii prawdopodobieństwa[M]. Warszawa：Państwowe Wydawn，1954. [24] 刘宝琛，张家生. 近地面开挖引起的地面沉降的随机介质方法[J]. 岩石力学与工程学报，1995，14(4)：289–296.(LIU Baochen，ZHANG Jiasheng. Stochastic method for ground subsidence due to near surface excavation[J]. Chinese Journal of Rock Mechanics and Engineering，1995，14(4)：289–296.(in Chinese)) [25] LEE K M，ROWE R K，LO K Y. Subsidence owing to tunneling I：estimating the gap parameter[J]. Canadian Geotechnical Journal，1992，29(6)：929–940. [26] BELEGUNDU A D，CHANDRUPATLA T R. Optimization concepts and applications in engineering[M]. New Jersey：Prentice Hall， 1999：200–380. [27] VESIC A B. Bending of beams resting on isotropic elastic solids[J]. Journal of Soil Mechanics and Foundation Engineering，1961，87(2)：35–53. [28] SAGASETA C. Analysis of undrained soil deformation due to ground loss[J]. Geotechnique，1987，37(3)：301–320.