双线并行盾构隧道横向地震响应规律研究
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摘要
为研究双线并行盾构隧道的横向地震响应规律以及隧道—土体—隧道的相互作用机理,文章以深圳地铁13号线区间盾构隧道工程为背景,运用MIDAS/NX有限元模拟软件,计算分析日本阪神波及北京人工波下不同角度并行的双线盾构隧道地震响应规律。结果表明:与单线隧道相比,双线并行的空间组合方式对土体的动力响应具有放大效应,尤其是近距离隧道的中夹土;水平并行隧道动力响应最大,是线路抗震设计的最不利组合方式;双线隧道靠近侧的X型区域内力与变形最大,是结构抗震设计的薄弱环节;隧道—土体—隧道相互作用区域可根据距径比划分为3个等级:严重影响区、中度影响区及轻微影响区。
In order to study the seismic response law of two paralleled shield tunnels and interaction mechanism of tunnel-soil-tunnel system, the seismic response law of two paralleled shield tunnels with different parallel angles under Kobe wave and Beijing artificial wave was calculated and analyzed by MIDAS/NX finite element based on the Shenzhen metro line 13, with the results showing that spatial combinations of two paralleled tunnels amplifie dynamic response of soil mass compared with the single tunnel, especially the interlaid soils between tunnels with small interval; dynamic response of horizontally paralleled tunnels is the largest and it reveals this spatial combination is the most unfavorable mode regarding the aseismic design; internal force and deformation of the X-shaped region between two paralleled tunnels are the largest and it is the weak point in the aseismic design; according to the ratios of interval and diameter, the interaction region of tunnel-soil-tunnel are divided into three grades, i.e. severely affected area, moderately affected area and slightly affected area.
In order to study the seismic response law of two paralleled shield tunnels and interaction mechanism of tunnel-soil-tunnel system, the seismic response law of two paralleled shield tunnels with different parallel angles under Kobe wave and Beijing artificial wave was calculated and analyzed by MIDAS/NX finite element based on the Shenzhen metro line 13, with the results showing that spatial combinations of two paralleled tunnels amplifie dynamic response of soil mass compared with the single tunnel, especially the interlaid soils between tunnels with small interval; dynamic response of horizontally paralleled tunnels is the largest and it reveals this spatial combination is the most unfavorable mode regarding the aseismic design; internal force and deformation of the X-shaped region between two paralleled tunnels are the largest and it is the weak point in the aseismic design; according to the ratios of interval and diameter, the interaction region of tunnel-soil-tunnel are divided into three grades, i.e. severely affected area, moderately affected area and slightly affected area.
引文
[1]日本土木学会.隧道标准规范(盾构篇)及解说[M].朱伟译.北京:中国建筑工业出版社,2001.Japan Society of Civil Engineers.Japanese Standard for Shield Tunneling[M].Translated by ZHU Wei.Beijing:China Architecture and Building Press,2001.
[2]TOSHIHIKO O,NAONOBU T,KATSUMI S,et al.Dynamic Response of Twin Circular Tunnels during Earthquakes[C]//EQUCHIRT,DAMES,MOORE.Proceedings of the 4th US-Japan Workshop Prevention for Lifeline Systems.Washington:US Government Printing Office,1992.
[3]刘晶波,李彬,谷音.地铁盾构隧道地震反应分析[J].清华大学学报(自然科学版),2005,45(6):757-760.LIU Jingbo,LI Bin,GU Yin.Seismic Response Analysis of Shielded Subway Tunnels[J].Journal of Tsinghua University(Science and Technology),2005,45(6):757-760.
[4]孔戈,周健,徐建平,等.盾构隧道横向地震响应规律研究[J].岩石力学与工程学报,2007,26(增1):2872-2879.KONG Ge,ZHOU Jian,XU Jianping,et al.Study on Characteristics of Transverse Seismic Response of Shield Tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(S1):2872-2879.
[5]陈磊,陈国兴.近断层强地震动下双层竖向重叠地铁隧道的地震反应[J].防灾减灾工程学报,2008,28(4):399-408.CHEN Lei,CHEN Guoxing.Seismic Response of Vertically Double-layered Metro Tunnels under Near-fault Strong Ground Motion[J].Journal of Disaster Prevention and Mitigation Engineering,2008,28(4):399-408.
[6]梁建文,孙红阳.隧道-土-隧道轴向动力相互作用的一个解析解[J].地震工程与工程振动,2015,35(2):48-62.LIANG Jianwen,SUN Hongyang.Dynamic Tunnel-soil-tunnel Interaction in Longitudinal Direction:an Analytical Solution[J].Earthquake Engineering and Engineering Dynamics,2015,35(2):48-62.
[7]毕冉,唐晓,刘保健.盾构地铁隧道区间在地震作用下的三维动力时程响应分析[J].地质与勘探,2016,52(4):712-717.BI Ran,TANG Xiao,LIU Baojian.Three-dimensional Seismic Response Analysis of a Shield-shaped Subway Tunnel[J].Geology and Exploration,2016,52(4):712-717.
[8]中华人民民共和国住房和城乡建设部.城市轨道交通结构抗震设计规范:GB 50909-2014[S].北京:中国计划出版社,2014.Ministry of Housing and Urban-Rural Development of the People′s Republic of China.Code for Seismic Design of Urban Rail Transit Structures:GB 50909-2014[S].Beijing:China Planning Press,2014.
[9]安军海,陶连金,李积栋,等.地铁双层交叉隧道非线性地震响应分析[J].中国铁道科学,2015,36(3):66-72.AN Junhai,TAO Lianjin,LI Jidong,et al.Nonlinear Seismic Response of Doubled-decked Intersecting Metro Tunnel[J].China Railway Science,2015,36(3):66-72.
[10]姚毅超,董正方,王君杰.盾构隧道的反应位移法与抗震性能指标[J].中国科技论文,2012,7(5):334-338.YAO Yichao,DONG Zhengfang,WANG Junjie.Response-displacement Method and Aseismic Behavior Indices for Shield Tunnels[J].China Sciencepaper,2012,7(5):334-338.
[2]TOSHIHIKO O,NAONOBU T,KATSUMI S,et al.Dynamic Response of Twin Circular Tunnels during Earthquakes[C]//EQUCHIRT,DAMES,MOORE.Proceedings of the 4th US-Japan Workshop Prevention for Lifeline Systems.Washington:US Government Printing Office,1992.
[3]刘晶波,李彬,谷音.地铁盾构隧道地震反应分析[J].清华大学学报(自然科学版),2005,45(6):757-760.LIU Jingbo,LI Bin,GU Yin.Seismic Response Analysis of Shielded Subway Tunnels[J].Journal of Tsinghua University(Science and Technology),2005,45(6):757-760.
[4]孔戈,周健,徐建平,等.盾构隧道横向地震响应规律研究[J].岩石力学与工程学报,2007,26(增1):2872-2879.KONG Ge,ZHOU Jian,XU Jianping,et al.Study on Characteristics of Transverse Seismic Response of Shield Tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(S1):2872-2879.
[5]陈磊,陈国兴.近断层强地震动下双层竖向重叠地铁隧道的地震反应[J].防灾减灾工程学报,2008,28(4):399-408.CHEN Lei,CHEN Guoxing.Seismic Response of Vertically Double-layered Metro Tunnels under Near-fault Strong Ground Motion[J].Journal of Disaster Prevention and Mitigation Engineering,2008,28(4):399-408.
[6]梁建文,孙红阳.隧道-土-隧道轴向动力相互作用的一个解析解[J].地震工程与工程振动,2015,35(2):48-62.LIANG Jianwen,SUN Hongyang.Dynamic Tunnel-soil-tunnel Interaction in Longitudinal Direction:an Analytical Solution[J].Earthquake Engineering and Engineering Dynamics,2015,35(2):48-62.
[7]毕冉,唐晓,刘保健.盾构地铁隧道区间在地震作用下的三维动力时程响应分析[J].地质与勘探,2016,52(4):712-717.BI Ran,TANG Xiao,LIU Baojian.Three-dimensional Seismic Response Analysis of a Shield-shaped Subway Tunnel[J].Geology and Exploration,2016,52(4):712-717.
[8]中华人民民共和国住房和城乡建设部.城市轨道交通结构抗震设计规范:GB 50909-2014[S].北京:中国计划出版社,2014.Ministry of Housing and Urban-Rural Development of the People′s Republic of China.Code for Seismic Design of Urban Rail Transit Structures:GB 50909-2014[S].Beijing:China Planning Press,2014.
[9]安军海,陶连金,李积栋,等.地铁双层交叉隧道非线性地震响应分析[J].中国铁道科学,2015,36(3):66-72.AN Junhai,TAO Lianjin,LI Jidong,et al.Nonlinear Seismic Response of Doubled-decked Intersecting Metro Tunnel[J].China Railway Science,2015,36(3):66-72.
[10]姚毅超,董正方,王君杰.盾构隧道的反应位移法与抗震性能指标[J].中国科技论文,2012,7(5):334-338.YAO Yichao,DONG Zhengfang,WANG Junjie.Response-displacement Method and Aseismic Behavior Indices for Shield Tunnels[J].China Sciencepaper,2012,7(5):334-338.