地震荷载作用下大坂盾构隧道管片配筋校核
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摘要
将盾构隧道管片视为分段曲梁、管片之间为铰接关系、管片与地层之间为非线性接触关系,边界采用无限元吸收地震波的反向与折射,地层服从Mohr-Coulomb弹塑性本构模型,地震波采用EI-Centro波,采用地层-结构法,应用隐式动力有限元分析地震荷载作用下管片轴力与弯矩分布情况。根据有限元计算结果,结合结构力学方法,校核管片配筋是否合理。与荷载结构法相比,其方法可模拟围岩与管片、管片与管片之间的相互关系,并可考虑锚杆等支护结构对管片受力的影响,因而,计算结果更为精确。研究为盾构隧道管片配筋优化设计,降低隧道支护成本,提供了一种管片配筋校核计算方法与设计依据。
Taking the shield tunnel segment as a section curved beam,the segment was articulated each other and contacted nonlineariy with the rock stratum.Infinite element was used to absorb the reflection and refraction of seisminc waves in boundary;the Mohr-Coulomb elastoplastic constitutive model and EI Centro seismic wave were used;an implicit dynamic finite element analysis of axial force and bending moment distributions under seismic loads was conducted by stratum structure method.According to the finite element analysis results,the reinforcement of the segment is checked combining with structural mechanics approach.Comparing with the load-structure method,the proposed method can simulate the relationships between the segments,segment and surrounding rock;the supporting structure such as bolt can also be considered;so the method can give more accurate results.The research provides a method of checking calculation and design basis for the optimization design of the shield tunnel and reduces the cost of the support.
Taking the shield tunnel segment as a section curved beam,the segment was articulated each other and contacted nonlineariy with the rock stratum.Infinite element was used to absorb the reflection and refraction of seisminc waves in boundary;the Mohr-Coulomb elastoplastic constitutive model and EI Centro seismic wave were used;an implicit dynamic finite element analysis of axial force and bending moment distributions under seismic loads was conducted by stratum structure method.According to the finite element analysis results,the reinforcement of the segment is checked combining with structural mechanics approach.Comparing with the load-structure method,the proposed method can simulate the relationships between the segments,segment and surrounding rock;the supporting structure such as bolt can also be considered;so the method can give more accurate results.The research provides a method of checking calculation and design basis for the optimization design of the shield tunnel and reduces the cost of the support.
引文
[1]侯公羽,杨悦,刘波.盾构管片设计改进惯用法模型及其内力解析解[J].岩土力学,2008,29(1):161-166.HOU Gong-yu,YANG Yue,LIU Bo.Improved joint model with routine method and an analytical solution of its inner forces[J].Rock and Soil Mechanics,2008,29(1):161-166.
[2]肖石林.盾构机隧道施工的管片设计及有限元分析[D].武汉:武汉大学,2004.
[3]朱合华,陶履彬.盾构隧道衬砌结构受力分析的梁-弹簧系统模型[J].岩土力学,1998,19(2):26-32.ZHU He-hua,TAO Lü-bin.Study of two beam-spring models for the numerical analysis of segments in shield tunnel[J].Rock and Soil Mechanics,1998,19(2):26-32.
[4]朱合华,崔茂玉,杨金松.盾构衬砌管片的设计模型与荷载分布的研究[J].岩土工程学报,2000,22(2):190-194.ZHU He-hua,CUI Mao-yu,YANG Jin-song.Design model for shield lining segments and distribution of load[J].Chinese Journal of Geotechnical Engineering,2000,22(2):190-194.
[5]林志,朱合华,杨超,等.盾构区间隧道衬砌结构的抗震计算[J].同济大学学报,2004,32(5):607-611,616.LIN Zhi,ZHU He-hua,YANG Chao,et al.Anti-seismic calculation for shield tunnels[J].Journal of Tongji University,2004,32(5):607-611,616.
[6]张建刚,何川,杨征.大断面宽幅盾构管片三维内力分布分析[J].岩土力学,2009,30(7):2058-2062.ZHANG Jian-gang,HE Chuan,YANG Zheng.Analysis of3D internal forces distribution of wide segment lining for large-section shield tunnel[J].Rock and Soil Mechanics,2009,30(7):2058-2062.
[7]胡志平,罗丽娟,蔡志勇.盾构隧道管片衬砌的平板壳-弹性铰-地基系统模型[J].岩土力学,2005,26(9):1403-1408.HU Zhi-ping,LUO Li-juan,CAI Zhi-yong.Study of flat shell-elastic hinge-foundation model in shield tunnel[J].Rock and Soil Mechanics,2005,26(9):1403-1408.
[8]钟登华,梅传书,刘春冬.隧道TBM施工管片衬砌三维计算模型[J].天津大学学报,2001,34(4):472-476.ZHONG Deng-hua,MEI Chuan-shu,LIU Chun-dong.Study of the3-D computational model for TBM tunneling utilizing segmental concrete linings[J].Journal of Tianjin University,2001,34(4):472-476.
[9]钟登华,佟大威,王帅,等.深埋TBM施工输水隧洞结构的三维仿真分析[J].岩土力学,2008,29(3):609-613,618.ZHONG Deng-hua,TONG Da-wei,WANG Shuai,et al.Three-dimensional simulation analysis of structure of deep water diversion tunnel with TBM constructing[J].Rock and Soil Mechanics,2008,29(3):609-613,618.
[10]祝彦知,冯紫良,方志.地震动下考虑各向异性土体-盾构隧道数值模拟[J].岩土力学,2005,26(5):710-716.ZHU Yan-zhi,FENG Zi-liang,FANG Zhi.Numerical simulation of shield tunnel dynamic response to earth motions taking account of anisotropy of layered soil[J].Rock and soil Mechanics,2005,26(5):710-716.
[11]丁峻宏,金先龙,郭毅之,等.盾构隧道地震响应的三维数值模拟方法及应用[J].岩石力学与工程学报,2006,25(7):1430-1436.DING Jun-hong,JIN Xian-long,GUO Yi-zhi,et al.Three-dimensional numerical simulation method and its application to seismic response of shield tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(7):1430-1436.
[12]耿萍,何川,晏启祥.水下盾构隧道抗震设计分析方法的适应性研究[J].岩石力学与工程学报,2007,26(增刊2):3625-3630.GENG Ping,HE Chuan,YAN Qi-xiang.Applicability study on aseismic design method of submarine shield tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(Supp.2):3625-3630.
[13]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(增刊1):2872-2879.KONG Ge,ZHOU Jian,XU Jian-ping,et al.Study on characteristics of transverse seismic response of shield tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(Supp.1):2872-2879.
[14]张栋梁,杨林德,谢永利,等.盾构隧道抗震设计计算的解析解[J].岩石力学与工程学报,2008,27(3):543-549.ZHANG Dong-liang,YANG Lin-de,XIE Yong-li,et al.Analytical solution for aseismic design calculation of shield tunnels[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(3):543-549.
[15]中华人民共和国电力工业部.DL/T5057-1996水工混凝土结构设计规范[S].北京:中国电力出版社,1997.
[2]肖石林.盾构机隧道施工的管片设计及有限元分析[D].武汉:武汉大学,2004.
[3]朱合华,陶履彬.盾构隧道衬砌结构受力分析的梁-弹簧系统模型[J].岩土力学,1998,19(2):26-32.ZHU He-hua,TAO Lü-bin.Study of two beam-spring models for the numerical analysis of segments in shield tunnel[J].Rock and Soil Mechanics,1998,19(2):26-32.
[4]朱合华,崔茂玉,杨金松.盾构衬砌管片的设计模型与荷载分布的研究[J].岩土工程学报,2000,22(2):190-194.ZHU He-hua,CUI Mao-yu,YANG Jin-song.Design model for shield lining segments and distribution of load[J].Chinese Journal of Geotechnical Engineering,2000,22(2):190-194.
[5]林志,朱合华,杨超,等.盾构区间隧道衬砌结构的抗震计算[J].同济大学学报,2004,32(5):607-611,616.LIN Zhi,ZHU He-hua,YANG Chao,et al.Anti-seismic calculation for shield tunnels[J].Journal of Tongji University,2004,32(5):607-611,616.
[6]张建刚,何川,杨征.大断面宽幅盾构管片三维内力分布分析[J].岩土力学,2009,30(7):2058-2062.ZHANG Jian-gang,HE Chuan,YANG Zheng.Analysis of3D internal forces distribution of wide segment lining for large-section shield tunnel[J].Rock and Soil Mechanics,2009,30(7):2058-2062.
[7]胡志平,罗丽娟,蔡志勇.盾构隧道管片衬砌的平板壳-弹性铰-地基系统模型[J].岩土力学,2005,26(9):1403-1408.HU Zhi-ping,LUO Li-juan,CAI Zhi-yong.Study of flat shell-elastic hinge-foundation model in shield tunnel[J].Rock and Soil Mechanics,2005,26(9):1403-1408.
[8]钟登华,梅传书,刘春冬.隧道TBM施工管片衬砌三维计算模型[J].天津大学学报,2001,34(4):472-476.ZHONG Deng-hua,MEI Chuan-shu,LIU Chun-dong.Study of the3-D computational model for TBM tunneling utilizing segmental concrete linings[J].Journal of Tianjin University,2001,34(4):472-476.
[9]钟登华,佟大威,王帅,等.深埋TBM施工输水隧洞结构的三维仿真分析[J].岩土力学,2008,29(3):609-613,618.ZHONG Deng-hua,TONG Da-wei,WANG Shuai,et al.Three-dimensional simulation analysis of structure of deep water diversion tunnel with TBM constructing[J].Rock and Soil Mechanics,2008,29(3):609-613,618.
[10]祝彦知,冯紫良,方志.地震动下考虑各向异性土体-盾构隧道数值模拟[J].岩土力学,2005,26(5):710-716.ZHU Yan-zhi,FENG Zi-liang,FANG Zhi.Numerical simulation of shield tunnel dynamic response to earth motions taking account of anisotropy of layered soil[J].Rock and soil Mechanics,2005,26(5):710-716.
[11]丁峻宏,金先龙,郭毅之,等.盾构隧道地震响应的三维数值模拟方法及应用[J].岩石力学与工程学报,2006,25(7):1430-1436.DING Jun-hong,JIN Xian-long,GUO Yi-zhi,et al.Three-dimensional numerical simulation method and its application to seismic response of shield tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(7):1430-1436.
[12]耿萍,何川,晏启祥.水下盾构隧道抗震设计分析方法的适应性研究[J].岩石力学与工程学报,2007,26(增刊2):3625-3630.GENG Ping,HE Chuan,YAN Qi-xiang.Applicability study on aseismic design method of submarine shield tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(Supp.2):3625-3630.
[13]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(增刊1):2872-2879.KONG Ge,ZHOU Jian,XU Jian-ping,et al.Study on characteristics of transverse seismic response of shield tunnel[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(Supp.1):2872-2879.
[14]张栋梁,杨林德,谢永利,等.盾构隧道抗震设计计算的解析解[J].岩石力学与工程学报,2008,27(3):543-549.ZHANG Dong-liang,YANG Lin-de,XIE Yong-li,et al.Analytical solution for aseismic design calculation of shield tunnels[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(3):543-549.
[15]中华人民共和国电力工业部.DL/T5057-1996水工混凝土结构设计规范[S].北京:中国电力出版社,1997.
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