地铁盾构隧道施工对城市地下管线的影响研究
|
摘要
研究软土地区盾构隧道施工对周围地下管线的影响,分析地下管线的力学及变形性状,具有较为重要的理论意义与实用价值。本文主要采用理论分析和数值模拟相结合的方法,对盾构隧道施工影响下的地下管线性状进行研究,并分析了管线位移的影响因素。主要研究内容如下:
(1)采用弹性地基假定,基于Peck修正公式和Attewell经验公式,使用初参数法,推导了盾构隧道施工影响下,垂直和平行于盾构隧道的刚性接口地下管线的竖向位移与力学性状求解公式。
(2)按管线与隧道垂直及平行两种情形,分析了盾构隧道施工对柔性接口地下管线位移与转角的影响,并给出了各接口处的相对转角与相邻接口位移之间存在的关系。
(3)提出了一种基于经验公式的变形控制安全性评价方法,建立了管线变形指标和地面最大位移之间的直接联系。通过管线的允许变形值反求出地面变形的允许值,以达到由地面位移间接控制管线变形的目的,实现对管线的安全监控。
(4)利用Plaxis 3D Tunnel有限元软件,分为管隧垂直与平行两种情况,建立了三维数值模型,模拟了盾构隧道施工对刚性接口地下管线的影响。
(5)采用数值计算方法,按管隧垂直、管隧平行两种情形,分析了土质参数、管线参数、施工参数对地下管线力学性状的影响规律。
Estimating the effect of shield tunnel construction on adjacent buried pipelines in soft soil areas, Giving a study on this research subject has important theoretical significances and utility value. the method of theoretical analysis and numerical simulation were adopted respectively to research the displacement and force of adjacent buried pipelines effected by shield tunnel construction. The research also analysed the influencing factors of displacement of pipelines. The main research results are as follows:
(1)Adopting the elastic foundation beam theory, by Peck modified formula and Attewell empirical formula, using the method of initial parameter, the solution formulas of vertical displacement and mechanics properties of rigidly jointed pipelines effected by shield tunnel construction were derived in two different cases (pipeline transverse to the tunnel and pipeline parallel to the tunnel).
(2)In the two different cases (pipeline transverse to tunnel and pipeline parallel to the tunnel), the effect of shield tunnel construction on the displacement and rotation angle of flexible jointed pipelines was analysed. Then the relationship of relative rotation angle in every joint and displacement in adjacent joints was given.
(3)Direct relation between pipeline deformation index and maximum ground surface displacement is established and a new deformation control method is put forward based on empirical formula to overcome the weakness of previous damage evaluation method, which only take ground displacemen as assessment index. Ground surface allowable deformation is attained by using allowable deformation value of pipelines to achieve the goal of controlling pipeline deformation through ground surface displacement and protect the pipeline.
(4)Using Plaxis 3D Tunnel finite element software, 3-D numerical models were established to simulate the effect of shield tunnel construction on rigidly jointed buried pipelines in the two different cases (pipeline transverse to tunnel and pipeline parallel to the tunnel).
(5)In the two different cases (pipeline transverse to tunnel and pipeline parallel to the tunnel),the change laws of displacement of rigidly jointed buried pipeline effected by shield tunnel construction were studied under different factors(soil、buried pipeline、construction).
(1)采用弹性地基假定,基于Peck修正公式和Attewell经验公式,使用初参数法,推导了盾构隧道施工影响下,垂直和平行于盾构隧道的刚性接口地下管线的竖向位移与力学性状求解公式。
(2)按管线与隧道垂直及平行两种情形,分析了盾构隧道施工对柔性接口地下管线位移与转角的影响,并给出了各接口处的相对转角与相邻接口位移之间存在的关系。
(3)提出了一种基于经验公式的变形控制安全性评价方法,建立了管线变形指标和地面最大位移之间的直接联系。通过管线的允许变形值反求出地面变形的允许值,以达到由地面位移间接控制管线变形的目的,实现对管线的安全监控。
(4)利用Plaxis 3D Tunnel有限元软件,分为管隧垂直与平行两种情况,建立了三维数值模型,模拟了盾构隧道施工对刚性接口地下管线的影响。
(5)采用数值计算方法,按管隧垂直、管隧平行两种情形,分析了土质参数、管线参数、施工参数对地下管线力学性状的影响规律。
Estimating the effect of shield tunnel construction on adjacent buried pipelines in soft soil areas, Giving a study on this research subject has important theoretical significances and utility value. the method of theoretical analysis and numerical simulation were adopted respectively to research the displacement and force of adjacent buried pipelines effected by shield tunnel construction. The research also analysed the influencing factors of displacement of pipelines. The main research results are as follows:
(1)Adopting the elastic foundation beam theory, by Peck modified formula and Attewell empirical formula, using the method of initial parameter, the solution formulas of vertical displacement and mechanics properties of rigidly jointed pipelines effected by shield tunnel construction were derived in two different cases (pipeline transverse to the tunnel and pipeline parallel to the tunnel).
(2)In the two different cases (pipeline transverse to tunnel and pipeline parallel to the tunnel), the effect of shield tunnel construction on the displacement and rotation angle of flexible jointed pipelines was analysed. Then the relationship of relative rotation angle in every joint and displacement in adjacent joints was given.
(3)Direct relation between pipeline deformation index and maximum ground surface displacement is established and a new deformation control method is put forward based on empirical formula to overcome the weakness of previous damage evaluation method, which only take ground displacemen as assessment index. Ground surface allowable deformation is attained by using allowable deformation value of pipelines to achieve the goal of controlling pipeline deformation through ground surface displacement and protect the pipeline.
(4)Using Plaxis 3D Tunnel finite element software, 3-D numerical models were established to simulate the effect of shield tunnel construction on rigidly jointed buried pipelines in the two different cases (pipeline transverse to tunnel and pipeline parallel to the tunnel).
(5)In the two different cases (pipeline transverse to tunnel and pipeline parallel to the tunnel),the change laws of displacement of rigidly jointed buried pipeline effected by shield tunnel construction were studied under different factors(soil、buried pipeline、construction).
引文
[1]谢新生,张志勇.盾构施工对周围环境的影响及防治措施分析[J].岩土工程界,第7卷,第8期
[2]徐永福,孙钧.隧道盾构掘进施工对周围土体的影响[J] .地下工程与隧道,1999,(2):9-13
[3]徐永福.盾构推进引起地面变形的分析[J].地下工程与隧道,2000,(1):21-25
[4] Romo M R.Elements induced by soft ground tunneling[A].Inter Conf on Case Histories in Geotech Engrg :Vol 1[C].Toronto: Balkema,1984
[5]阳军生,刘宝琛.城市隧道施工引起的地表移动及变形[M].北京:中国铁道出版社,2002
[6] Peck.. R.B.Deep excavation and tunneling in soft ground.State of the Art Report[A]. Proc.7th Int. Cont. on Soil Mechanics and Foundation Engineering[C].Mexico city,1969: 255-290
[7] S.Y.Chi, J.C.Chern, C.C.Lin.Optimized back-analysis for tunneling-induced ground movement using equivalent ground loss model[J]. Tunneling and Underground Space Technology, 2001(16):159-165
[8] P.B.Attewell,J.Yeates,A.R.Selby. Soil movements induced by tunneling and their effeets on pipelines and structures[M].London: Blackie,1986
[9] Mair R.J.,Taylor R.N.,Bracegirdle A. Subsurface settlement profits above tunnels in clay[J].Geotechnique,1993,43(2):315-320
[10] Clough G W,Schmidt B. Design and performance of excavations and tunnels in soft clay[A]. Soft Clay Engineering[C]. Amsterdam: Elsevier Scientific Publishing Company,1981:569一636
[11]张海波.地铁隧道盾构法施工对周围环境影响的数值模拟[D].河海大学博士学位论文,2005
[12] Sagaseta C. Analysis of undrained soil deformation due to ground loss[J].Geotechnique,1987,37(3):301-320
[13] Verruijt A. BookerJ.R. Surface settlements due to deformation of a tunnel in an elastic half plane[J].Geotechnique,1996,46(4):753-756
[14] Loganathan N,Poulous H.G,Xu K.J. Ground and pile-group responses due to tunneling[J]. Soil and Foundations,2001,41(1):57-67
[15]易宏伟.盾构施工对土体扰动与地层移动影响的研究[D].同济大学博士学位论文,1999
[16]施建勇,张静,佘才高等.隧道施工引起土体变形的半解析分析[J] .河海大学学报,2002,30(6):48-51
[17] Lee K.M.,Rowe R.K..Finite element molelling of the three-dismensional ground deformations due to tunneling in soft cohesive soils:Part I-Method of analysis
[18]况龙川.盾构隧道数值模拟及其受环境影响的安全问题研究[R].河海大学博士后研究工作报告,2000
[19]刘洪洲,孙钧.软土隧道盾构推进中地面沉降影响因素的数值法研究[J].现代隧道技术,2001,38(6):24-28
[20]孙钧,刘红洲.上海地铁交叠盾构隧道施工变形问题[J].同济大学学报,2002,30(4):379-385
[21]骆建军,张顶力,王梦恕等.地铁施工对管线的影响[J].中国铁道科学,2006,27(6):124-127
[22]蒋正华,吴波,高波。地铁区间隧道施工对管线影响的数值模拟[J].现代隧道技术,2003,40(1):16-20
[23]李宏刚.铸铁给水管线的应力分析、爆管原因、处理及预防措施[J].纯碱工业,2000,(2):38-41
[24]廖少明,刘建航.邻近建筑及设施的保护技术,基坑工程手册[M].北京:中国建筑工业出版社,1997
[25]高文华.基坑变形预测与邻近建筑及设施的保护研究[博士后出站报告D].长沙:湖南大学,2001
[26] Kristin M. Molnar, Richard J. Finno, Edwin C. Rossow. Analysis of effects of deep beaced excavations on adjacent buried utilities [R]. School of Civil and Environmental Engineering , Northwestern University, December, 2003
[27]高田至郎等.受地基沉降影响的地下管线的设计公式及应用[A],地下管线抗震[C].北京:学术书刊出版社,1990
[28]段光杰.地铁隧道施工扰动对地表沉降和管线变形影响的理论和方法研究[博士学位论文D],北京:中国地质大学(北京),2002
[29]李大勇,龚晓南,张土乔.软土地基深基坑周围地下管线保护措施的数值模拟[J],岩土工程学报,2001,23(6):736-740
[30]吴波,高波.地铁区间隧道施工对邻近管线影响的三维数值模拟[J],岩石力学与工程学报,2002,21(增2):2451-2456
[31]刘洪洲,孙钧.软土隧道盾构推进中地面沉降影响因素的数值法研究[J].现代隧道技术,2001,38(6):24-28
[32]孙钧,刘红洲.上海地铁交叠盾构隧道施工变形问题[J].同济大学学报,2002,30(4):379-385
[33]吴为义.盾构隧道周围地下管线的性状研究[D].浙江大学博士学位论文,2008
[34]王霆,刘维宁,李兴高等.地铁施工影响临近管线的研究现状与展望[J].中国铁道科学,2006,27(6):117-123
[35]袁正辉,贺美德.地铁隧道施工对地下管线的影响[J].市政技术,2006,24(5):317-320
[36]龙驭球.弹性地基梁的计算[M].北京:人民教育出版社,1982
[37]《数学手册》编写组.数学手册[M].北京:高等教育出版社,2004
[38]姜忻良.隧道开挖引起土层沉降槽曲线形态的分析与计算[J].岩土力学,2004,25(10):1542-1544
[39] Untraner.R.E. Design Requiremnets for Cast Iron Soil Pipe[R]. Iowa State University, May, 1970
[2]徐永福,孙钧.隧道盾构掘进施工对周围土体的影响[J] .地下工程与隧道,1999,(2):9-13
[3]徐永福.盾构推进引起地面变形的分析[J].地下工程与隧道,2000,(1):21-25
[4] Romo M R.Elements induced by soft ground tunneling[A].Inter Conf on Case Histories in Geotech Engrg :Vol 1[C].Toronto: Balkema,1984
[5]阳军生,刘宝琛.城市隧道施工引起的地表移动及变形[M].北京:中国铁道出版社,2002
[6] Peck.. R.B.Deep excavation and tunneling in soft ground.State of the Art Report[A]. Proc.7th Int. Cont. on Soil Mechanics and Foundation Engineering[C].Mexico city,1969: 255-290
[7] S.Y.Chi, J.C.Chern, C.C.Lin.Optimized back-analysis for tunneling-induced ground movement using equivalent ground loss model[J]. Tunneling and Underground Space Technology, 2001(16):159-165
[8] P.B.Attewell,J.Yeates,A.R.Selby. Soil movements induced by tunneling and their effeets on pipelines and structures[M].London: Blackie,1986
[9] Mair R.J.,Taylor R.N.,Bracegirdle A. Subsurface settlement profits above tunnels in clay[J].Geotechnique,1993,43(2):315-320
[10] Clough G W,Schmidt B. Design and performance of excavations and tunnels in soft clay[A]. Soft Clay Engineering[C]. Amsterdam: Elsevier Scientific Publishing Company,1981:569一636
[11]张海波.地铁隧道盾构法施工对周围环境影响的数值模拟[D].河海大学博士学位论文,2005
[12] Sagaseta C. Analysis of undrained soil deformation due to ground loss[J].Geotechnique,1987,37(3):301-320
[13] Verruijt A. BookerJ.R. Surface settlements due to deformation of a tunnel in an elastic half plane[J].Geotechnique,1996,46(4):753-756
[14] Loganathan N,Poulous H.G,Xu K.J. Ground and pile-group responses due to tunneling[J]. Soil and Foundations,2001,41(1):57-67
[15]易宏伟.盾构施工对土体扰动与地层移动影响的研究[D].同济大学博士学位论文,1999
[16]施建勇,张静,佘才高等.隧道施工引起土体变形的半解析分析[J] .河海大学学报,2002,30(6):48-51
[17] Lee K.M.,Rowe R.K..Finite element molelling of the three-dismensional ground deformations due to tunneling in soft cohesive soils:Part I-Method of analysis
[18]况龙川.盾构隧道数值模拟及其受环境影响的安全问题研究[R].河海大学博士后研究工作报告,2000
[19]刘洪洲,孙钧.软土隧道盾构推进中地面沉降影响因素的数值法研究[J].现代隧道技术,2001,38(6):24-28
[20]孙钧,刘红洲.上海地铁交叠盾构隧道施工变形问题[J].同济大学学报,2002,30(4):379-385
[21]骆建军,张顶力,王梦恕等.地铁施工对管线的影响[J].中国铁道科学,2006,27(6):124-127
[22]蒋正华,吴波,高波。地铁区间隧道施工对管线影响的数值模拟[J].现代隧道技术,2003,40(1):16-20
[23]李宏刚.铸铁给水管线的应力分析、爆管原因、处理及预防措施[J].纯碱工业,2000,(2):38-41
[24]廖少明,刘建航.邻近建筑及设施的保护技术,基坑工程手册[M].北京:中国建筑工业出版社,1997
[25]高文华.基坑变形预测与邻近建筑及设施的保护研究[博士后出站报告D].长沙:湖南大学,2001
[26] Kristin M. Molnar, Richard J. Finno, Edwin C. Rossow. Analysis of effects of deep beaced excavations on adjacent buried utilities [R]. School of Civil and Environmental Engineering , Northwestern University, December, 2003
[27]高田至郎等.受地基沉降影响的地下管线的设计公式及应用[A],地下管线抗震[C].北京:学术书刊出版社,1990
[28]段光杰.地铁隧道施工扰动对地表沉降和管线变形影响的理论和方法研究[博士学位论文D],北京:中国地质大学(北京),2002
[29]李大勇,龚晓南,张土乔.软土地基深基坑周围地下管线保护措施的数值模拟[J],岩土工程学报,2001,23(6):736-740
[30]吴波,高波.地铁区间隧道施工对邻近管线影响的三维数值模拟[J],岩石力学与工程学报,2002,21(增2):2451-2456
[31]刘洪洲,孙钧.软土隧道盾构推进中地面沉降影响因素的数值法研究[J].现代隧道技术,2001,38(6):24-28
[32]孙钧,刘红洲.上海地铁交叠盾构隧道施工变形问题[J].同济大学学报,2002,30(4):379-385
[33]吴为义.盾构隧道周围地下管线的性状研究[D].浙江大学博士学位论文,2008
[34]王霆,刘维宁,李兴高等.地铁施工影响临近管线的研究现状与展望[J].中国铁道科学,2006,27(6):117-123
[35]袁正辉,贺美德.地铁隧道施工对地下管线的影响[J].市政技术,2006,24(5):317-320
[36]龙驭球.弹性地基梁的计算[M].北京:人民教育出版社,1982
[37]《数学手册》编写组.数学手册[M].北京:高等教育出版社,2004
[38]姜忻良.隧道开挖引起土层沉降槽曲线形态的分析与计算[J].岩土力学,2004,25(10):1542-1544
[39] Untraner.R.E. Design Requiremnets for Cast Iron Soil Pipe[R]. Iowa State University, May, 1970