既有线下邻近大断面地铁双隧道暗挖施工对地表形变的影响
|
摘要
以角门西站北京地铁十号线下穿地铁四号线的邻近双隧道暗挖施工为例,对既有线下大断面地铁双隧道暗挖设计施工因素对地表形变的影响进行数值模拟研究。提出并确定对大断面隧道开挖加固形成水泥土的参数选取方法,并利用监测资料进行校核和验证。建立二维有限元模型,对不同加固设计和暗挖施工方法等影响因素进行研究,对这些影响因素引起的地表沉降进行模拟分析,并和监测资料进行对比。研究成果可指导设计和施工,对实现设计最优化,降低工程对地面环境影响的风险具有较大意义,为今后的同类工程实践提供借鉴。
Based on a real project Jiaomen West Station in Beijing,details of two-dimensional finite element model for numerical analyses of surface ground subsidence are presented. Interpretation methods for parameters of soil-cement mixtures used to reinforce and pre-support excavation are proposed. Further numerical studies on the design and construction issues which significantly affect the ground subsidence caused by covered undercutting are then conducted. The study concludes that the proposed methodology to interpret the parameters of soil-cement mixtures is valid by comparing the simulation results and observed data. Moreover,the settlement trough under existing station structures is still in line with overseas research for Greenfield single tunnel,unconfined compressive strength of soil-cement mixture 1.5 MPa to 2.0 MPa is capable of making the excavation stable. The study also indicates that the surface ground subsidence has a correlation with pillar width.
Based on a real project Jiaomen West Station in Beijing,details of two-dimensional finite element model for numerical analyses of surface ground subsidence are presented. Interpretation methods for parameters of soil-cement mixtures used to reinforce and pre-support excavation are proposed. Further numerical studies on the design and construction issues which significantly affect the ground subsidence caused by covered undercutting are then conducted. The study concludes that the proposed methodology to interpret the parameters of soil-cement mixtures is valid by comparing the simulation results and observed data. Moreover,the settlement trough under existing station structures is still in line with overseas research for Greenfield single tunnel,unconfined compressive strength of soil-cement mixture 1.5 MPa to 2.0 MPa is capable of making the excavation stable. The study also indicates that the surface ground subsidence has a correlation with pillar width.
引文
[1]王梦恕.北京地铁浅埋暗挖法施工[J].岩石力学与工程学报,1989,8(1):52–61.(WANG Mengshu.Shallow covered undercutting construction for metros in Beijing[J].Chinese Journal of Rock.Mechanics and Engineering,1989,8(1):52–61.(in Chinese))
[2]周诚,周少东,林涛,等.城市地铁隧道区间浅埋暗挖施工地表沉降控制研究[J].施工技术,2011,40(19):70–74.(ZHOU Cheng,ZHOU Shaodong,LIN Tao,et al.Ground subsidence control techniques for subway tunnels[J].Construction Technology,2011,40(19):70–74.(in Chinese))
[3]孔恒.城市地铁隧道浅埋暗挖法地层预加固机理及其应用研究[博士学位论文][D],北京:北京交通大学,2003.(KONG Heng,Mechanism and application of reinforcement and pre-support for shallow covered undercutting of subway tunnels[Ph.D.Thesis][D].Beijing:Beijing Jiaotong University,2003.(in Chinese))
[4]吉小明,石明霞.浅埋暗挖隧道围岩预加固机理及稳定性分析[J].现代隧道技术,2008,(增1):238–243.(JI Xiaoming,SHI Mingxia.Mechanism and stability of reinforcement and pre-support for shallow covered undercutting of tunnels[J].Modern Tunnelling Technology,2008,(Supp.1):238–243.(in Chinese))
[5]SAGASETA C.Analysis of undrained soil deformation due to ground loss[J].Geotechnique,1987,37(3):301–320.
[6]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.
[7]LOGANATHAN N,POULOS H G.Analytical prediction for tunneling induced ground movement in clays[J].Journal of Geotechnical and Geoenvironmental Engineering,1998,124(9):846–856.
[8]ADDENBROOK T I,POTTS D M.Twin tunnel interaction:surface and subsurface effects[J].International Journal of Geomechanics,2001,1(2):249–271.
[9]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.
[10]YAMAMOTO K,LYAMIN A V,WILSON D V,et al.Stability of dual circular tunnels in cohesive-frictional soil subjected to surcharge loading[J].Computers and Geotechnics,2004,38(4):41–54.
[11]黄宏伟,张冬梅.盾构施工引起的地表沉降及现场监控[J].岩石力学与工程学报,2001,20(增1):1 814–1 820.(HUANG Hongwei,ZHANG Dongmei.Ground subsidence caused by shield tunneling and monitoring[J].Chinese Journal of Rock.Mechanics and Engineering,2001,20(Supp.1):1 814–1 820.(in Chinese))
[12]张云,尹宗泽,徐永福.盾构法隧道引起的地表变形分析[J].岩石力学与工程学报,2002,21(3):388–392.(ZHANG Yun,YIN Zongze,XU Yongfu.Analysis of ground subsidence induced by shield tunneling[J].Chinese Journal of Rock.Mechanics and Engineering,2002,21(3):388–392.(in Chinese))
[13]黄润秋,戚国庆.地铁隧道盾构工对环境的影响研究[J].岩石力学与工程学报,2003,22(增1):2 464–2 486.(HUANG Runqiu,QI Guoqing.Influences on environment of shield tunneling[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(Supp.1):2 464–2 486.(in Chinese))
[14]魏刚,张世民,齐静静,等.盾构隧道施工引起的地面变形计算方法研究[J].岩石力学与工程学报,2006,25(增1):3 317–3 323.(WEI Gang,ZHANG Shimin,QI Jingjing,et al.Study of calculation method of ground deformation induced by shield tunnel construction[J].Chinese Journal of Rock.Mechanics and Engineering,2006,25(Supp.1):3 317–3 323.(in Chinese))
[15]乔世范,殷建华,刘宝琛.圆形断面隧道开挖引起的地表及岩土体的位移和变形计算研究[J].岩石力学与工程学报,2008,27(增2):3 611–3 616.(QIAO Shifan,YIN Jianhua,LIU Baochen.Deformation computations and analysis of ground subsidence by exaction of circular cross-sectional tunnels[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(Supp.2):3 611–3 616.(in Chinese))
[16]王霆,刘维宁,张成满,等.地铁车站浅埋暗挖法施工引起地表沉降规律研究[J].岩石力学与工程学报,2007,26(9),1 855–1 861.(WANG Ting,LIU Weining,ZHANG Chengman et al.Study on ground settlement induced by shallow metro station constructions[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(9):1 855–1 861.(in Chinese))
[17]晏启祥,何川,姚勇,等.小净距隧道施工小导管注浆效果的数值模拟分析[J].岩土力学,2004,25(增2):239–242.(YAN Qixiang,HE Chuan,YAO Yong,et al.Numerical analysis for grouting effects used in tunnels with small pillar width[J].Rock and Soil Mechanics,2004,25(Supp.2):239–242.(in Chinese))
[18]何川,苏宗贤,曾东洋.地铁盾构隧道重叠下穿施工对上方已建隧道的影响[J].土木工程学报,2008,41(3):91–98.(HE Chuan,SU Zongxian,ZENG Dongyang.Influence of metro shield tunneling on existing tunnel directly above[J].China Civil Engineering Journal,41(3):91–98.(in Chinese))
[19]姚继安.浅埋偏压隧道与邻近隧道开挖顺序分析[J].铁道勘测与设计,2006,(4):9–12.(YAO Jian.Construction sequence analysis for shallow buried tunnel with biased pressure and twin tunnels[J].Railway Survey and Design,2006,(4):9–12.(in Chinese))
[20]王国波,徐海清,王艳丽.“群洞效应”对紧邻交叠盾构隧道场地土地震响应的初步分析[J].岩土工程学报,2013,35(5):968–973.(WANG Guobo,XU Haiqing,WANG Yanli.Effects of grouped tunnels and their influences on site seismic analysis with twin tunnels[J].Chinese Journal of Geotechnical Engineering,2013,35(5):968–973.(in Chinese))
[21]杨小礼,眭志荣.浅埋小净距偏压隧道施工工序的数值分析[J].中南大学学报:自然科学版,2007,38(4):764–770.(YANG Xiaoli,GUI Zhirong.Construction sequence analysis for shallow buried biased-pressure twin tunnels[J].Journal of Central South University:Science and Technology,2007,38(4):764–770.(in Chinese))
[22]LECA E,NEW B.Settlement induced by tunneling in soft ground[J].Tunnelling and Underground Space Technology,2007,22(1):119–149.
[23]LECA E,LEBLAIS Y,KUHNHENN K.Underground works in soils and soft rock tunneling[C]//Proceedings of International Conference on Geotechnology of Geology Engineering.Melbourne,Australia.2000:220–268.
[24]MUNFAKH G A.The ground improvement engineering-the state of the US practice:Part 1.methods,ground improvement[J].Ground Engineering,1997,1(4):193–214.
[25]MUNFAKH G A.The ground improvement engineering-the state of the US practice:Part 2.applications,ground improvement[J].Ground Engineering,1997,1(4):215–222.
[26]龚晓南.地基处理手册[M].3版.北京:中国建筑工业出版社,2008:365–410.(GONG Xiaonan.Handbook for ground improvement[M].3rd ed.Beijing:China Building Press,2008:365–410.(in Chinese))
[27]BYLE M J,BORDEN R H.Verification of geotechnical grouting[M].Reston:Geotechnical Special Publication,1995:1–77.
[28]WANG D Y,GAO Z R,LEE J L,et al.Assessment and optimization of soil mixing and umbrella vault applied to a cross-passage excavation in soft soils[J].International Journal of Geomechanics,2013,DOI:0.1061/(ASCE)GM.1943–5622.0000374.
[29]American Concrete Institute.Building code requirements for structural concrete and commentary[S].[S.l.]:American Concrete Institute,2003.
[30]BIENIAWSKI Z T.Design methodology in rock engineering[M].London:CRC Press,1992:205.
[31]ZHANG L,EINSTEIN H H.Using RQD to estimate the deformation modulus of rock masses[J].International Journal of Rock Mechanics and Mining Sciences,2004,41:337–341.
[32]MITCHELL J K.The properties of cement-stabilized soils[C]//Proceedings of Residential Workshop on Materials and Methods For Low Cost Road,Rail,and Reclamation Works.Leura,Australia:Unisearch Ltd.,1976:365–404.
[33]BALMER G G.Shear strength and elastic properties of soil-cement mixtures under triaxial loading[C]//Proceedings of American Society for Testing Materials by Portland Cement Association,Research and Development Laboratories.[S.l.]:[s.n.],1958:1 187–1 204.
[34]YOO C.Finite-element analysis of tunnel face reinforced by longitudinal pipes[J].Computers and Geotechnics,2002,29:73–94.
[2]周诚,周少东,林涛,等.城市地铁隧道区间浅埋暗挖施工地表沉降控制研究[J].施工技术,2011,40(19):70–74.(ZHOU Cheng,ZHOU Shaodong,LIN Tao,et al.Ground subsidence control techniques for subway tunnels[J].Construction Technology,2011,40(19):70–74.(in Chinese))
[3]孔恒.城市地铁隧道浅埋暗挖法地层预加固机理及其应用研究[博士学位论文][D],北京:北京交通大学,2003.(KONG Heng,Mechanism and application of reinforcement and pre-support for shallow covered undercutting of subway tunnels[Ph.D.Thesis][D].Beijing:Beijing Jiaotong University,2003.(in Chinese))
[4]吉小明,石明霞.浅埋暗挖隧道围岩预加固机理及稳定性分析[J].现代隧道技术,2008,(增1):238–243.(JI Xiaoming,SHI Mingxia.Mechanism and stability of reinforcement and pre-support for shallow covered undercutting of tunnels[J].Modern Tunnelling Technology,2008,(Supp.1):238–243.(in Chinese))
[5]SAGASETA C.Analysis of undrained soil deformation due to ground loss[J].Geotechnique,1987,37(3):301–320.
[6]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.
[7]LOGANATHAN N,POULOS H G.Analytical prediction for tunneling induced ground movement in clays[J].Journal of Geotechnical and Geoenvironmental Engineering,1998,124(9):846–856.
[8]ADDENBROOK T I,POTTS D M.Twin tunnel interaction:surface and subsurface effects[J].International Journal of Geomechanics,2001,1(2):249–271.
[9]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.
[10]YAMAMOTO K,LYAMIN A V,WILSON D V,et al.Stability of dual circular tunnels in cohesive-frictional soil subjected to surcharge loading[J].Computers and Geotechnics,2004,38(4):41–54.
[11]黄宏伟,张冬梅.盾构施工引起的地表沉降及现场监控[J].岩石力学与工程学报,2001,20(增1):1 814–1 820.(HUANG Hongwei,ZHANG Dongmei.Ground subsidence caused by shield tunneling and monitoring[J].Chinese Journal of Rock.Mechanics and Engineering,2001,20(Supp.1):1 814–1 820.(in Chinese))
[12]张云,尹宗泽,徐永福.盾构法隧道引起的地表变形分析[J].岩石力学与工程学报,2002,21(3):388–392.(ZHANG Yun,YIN Zongze,XU Yongfu.Analysis of ground subsidence induced by shield tunneling[J].Chinese Journal of Rock.Mechanics and Engineering,2002,21(3):388–392.(in Chinese))
[13]黄润秋,戚国庆.地铁隧道盾构工对环境的影响研究[J].岩石力学与工程学报,2003,22(增1):2 464–2 486.(HUANG Runqiu,QI Guoqing.Influences on environment of shield tunneling[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(Supp.1):2 464–2 486.(in Chinese))
[14]魏刚,张世民,齐静静,等.盾构隧道施工引起的地面变形计算方法研究[J].岩石力学与工程学报,2006,25(增1):3 317–3 323.(WEI Gang,ZHANG Shimin,QI Jingjing,et al.Study of calculation method of ground deformation induced by shield tunnel construction[J].Chinese Journal of Rock.Mechanics and Engineering,2006,25(Supp.1):3 317–3 323.(in Chinese))
[15]乔世范,殷建华,刘宝琛.圆形断面隧道开挖引起的地表及岩土体的位移和变形计算研究[J].岩石力学与工程学报,2008,27(增2):3 611–3 616.(QIAO Shifan,YIN Jianhua,LIU Baochen.Deformation computations and analysis of ground subsidence by exaction of circular cross-sectional tunnels[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(Supp.2):3 611–3 616.(in Chinese))
[16]王霆,刘维宁,张成满,等.地铁车站浅埋暗挖法施工引起地表沉降规律研究[J].岩石力学与工程学报,2007,26(9),1 855–1 861.(WANG Ting,LIU Weining,ZHANG Chengman et al.Study on ground settlement induced by shallow metro station constructions[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(9):1 855–1 861.(in Chinese))
[17]晏启祥,何川,姚勇,等.小净距隧道施工小导管注浆效果的数值模拟分析[J].岩土力学,2004,25(增2):239–242.(YAN Qixiang,HE Chuan,YAO Yong,et al.Numerical analysis for grouting effects used in tunnels with small pillar width[J].Rock and Soil Mechanics,2004,25(Supp.2):239–242.(in Chinese))
[18]何川,苏宗贤,曾东洋.地铁盾构隧道重叠下穿施工对上方已建隧道的影响[J].土木工程学报,2008,41(3):91–98.(HE Chuan,SU Zongxian,ZENG Dongyang.Influence of metro shield tunneling on existing tunnel directly above[J].China Civil Engineering Journal,41(3):91–98.(in Chinese))
[19]姚继安.浅埋偏压隧道与邻近隧道开挖顺序分析[J].铁道勘测与设计,2006,(4):9–12.(YAO Jian.Construction sequence analysis for shallow buried tunnel with biased pressure and twin tunnels[J].Railway Survey and Design,2006,(4):9–12.(in Chinese))
[20]王国波,徐海清,王艳丽.“群洞效应”对紧邻交叠盾构隧道场地土地震响应的初步分析[J].岩土工程学报,2013,35(5):968–973.(WANG Guobo,XU Haiqing,WANG Yanli.Effects of grouped tunnels and their influences on site seismic analysis with twin tunnels[J].Chinese Journal of Geotechnical Engineering,2013,35(5):968–973.(in Chinese))
[21]杨小礼,眭志荣.浅埋小净距偏压隧道施工工序的数值分析[J].中南大学学报:自然科学版,2007,38(4):764–770.(YANG Xiaoli,GUI Zhirong.Construction sequence analysis for shallow buried biased-pressure twin tunnels[J].Journal of Central South University:Science and Technology,2007,38(4):764–770.(in Chinese))
[22]LECA E,NEW B.Settlement induced by tunneling in soft ground[J].Tunnelling and Underground Space Technology,2007,22(1):119–149.
[23]LECA E,LEBLAIS Y,KUHNHENN K.Underground works in soils and soft rock tunneling[C]//Proceedings of International Conference on Geotechnology of Geology Engineering.Melbourne,Australia.2000:220–268.
[24]MUNFAKH G A.The ground improvement engineering-the state of the US practice:Part 1.methods,ground improvement[J].Ground Engineering,1997,1(4):193–214.
[25]MUNFAKH G A.The ground improvement engineering-the state of the US practice:Part 2.applications,ground improvement[J].Ground Engineering,1997,1(4):215–222.
[26]龚晓南.地基处理手册[M].3版.北京:中国建筑工业出版社,2008:365–410.(GONG Xiaonan.Handbook for ground improvement[M].3rd ed.Beijing:China Building Press,2008:365–410.(in Chinese))
[27]BYLE M J,BORDEN R H.Verification of geotechnical grouting[M].Reston:Geotechnical Special Publication,1995:1–77.
[28]WANG D Y,GAO Z R,LEE J L,et al.Assessment and optimization of soil mixing and umbrella vault applied to a cross-passage excavation in soft soils[J].International Journal of Geomechanics,2013,DOI:0.1061/(ASCE)GM.1943–5622.0000374.
[29]American Concrete Institute.Building code requirements for structural concrete and commentary[S].[S.l.]:American Concrete Institute,2003.
[30]BIENIAWSKI Z T.Design methodology in rock engineering[M].London:CRC Press,1992:205.
[31]ZHANG L,EINSTEIN H H.Using RQD to estimate the deformation modulus of rock masses[J].International Journal of Rock Mechanics and Mining Sciences,2004,41:337–341.
[32]MITCHELL J K.The properties of cement-stabilized soils[C]//Proceedings of Residential Workshop on Materials and Methods For Low Cost Road,Rail,and Reclamation Works.Leura,Australia:Unisearch Ltd.,1976:365–404.
[33]BALMER G G.Shear strength and elastic properties of soil-cement mixtures under triaxial loading[C]//Proceedings of American Society for Testing Materials by Portland Cement Association,Research and Development Laboratories.[S.l.]:[s.n.],1958:1 187–1 204.
[34]YOO C.Finite-element analysis of tunnel face reinforced by longitudinal pipes[J].Computers and Geotechnics,2002,29:73–94.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心