盾构管片接头刚度衰减系数(ACS)的影响
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摘要
以盾构隧道衬砌三环原型加载破坏试验为基础,通过严格按照足尺试验尺寸、试验条件建立分析模型并消除环间作用的方法建立了单环加载破坏分析模型,着重就某局部管片接头转动刚度衰减对整环内力(弯矩)的影响进行分析,研究表明:(1)在盾构隧道管片整环破坏历程中,管片接头转动刚度的变化历程可通过转动刚度衰减系数这一特征变量进行追踪;(2)特定位置管片接头转动刚度衰减时,可导致其他位置管片弯矩发生增加或降低,且增减幅度并不一致;(3)在整环外加荷载增量保持不变的条件下,特定位置管片接头转动刚度的衰减(破坏)可导致管片环其它位置的弯矩迅速增加,从而引起或加速整环管片的破坏。
One single-ring analysis model was developed on base of the Full-Scale Test of three rings performed in Europe. Except ring interaction,it was kept same as that of the Full-Scale Test for the configuration parameter of the FEM model,such as dimension,material,constraint boundary,load history,etc. The influence of attenuation of rotational stiffness of segment joint on the bending moment of segment was analyzed. It showed that the variation of rotational stiffness of segment joints can be traced by the Attenuation Coefficient of Stiffness( ACS). The bending moment of segment may increase or decrease significantly due to the attenuation of the rotational stiffness of segment joint at specific location. The failure history of whole segment ring can be influenced significantly by the local yielding and attenuation of segment joint.
One single-ring analysis model was developed on base of the Full-Scale Test of three rings performed in Europe. Except ring interaction,it was kept same as that of the Full-Scale Test for the configuration parameter of the FEM model,such as dimension,material,constraint boundary,load history,etc. The influence of attenuation of rotational stiffness of segment joint on the bending moment of segment was analyzed. It showed that the variation of rotational stiffness of segment joints can be traced by the Attenuation Coefficient of Stiffness( ACS). The bending moment of segment may increase or decrease significantly due to the attenuation of the rotational stiffness of segment joint at specific location. The failure history of whole segment ring can be influenced significantly by the local yielding and attenuation of segment joint.
引文
[1]刘建航,侯学渊.盾构法隧道[M].北京:中国铁道出版社,1991.(Liu Jianhang,Hou Xueyuan.Shield-driven tunnels[M].Beijing:China Railway Press,1991.(in Chinese))
[2]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 Hehua,Cui Maoyu,Yang Jinsong.Design model for shield lining segments and distribution of load[J].Chinese Journal of Geotechnical Engineering,2000,22(2):190-194.(in Chinese))
[3]孙金.盾构隧道结构刚度不连续性对衬砌内力及变形影响分析[J].地下空间与工程学报,2016,12(1):55-60.(Sun Jin.Analysis of internal force and deformation of lining affected by structure stiffness discontinuity of shield tunnel[J].Chinese Journal of Underground Space and Engineering,2016,12(1):55-60.(in Chinese)).
[4]朱伟,黄正荣,梁精华.盾构衬砌管片的壳-弹簧设计模型研究[J].岩土工程学报,2006,28(8):940-947.(Zhu Wei,Huang Zhengrong,Liang Jinghua.Studies on shell-spring design model for segment of shield tunnels[J].Chinese Journal of Geotechnical Engineering,2006,28(8):940-947.(in Chinese))
[5]柳献,黄晓冬.通缝拼装盾构隧道衬砌结构抗倒塌性能的试验研究[J].岩石力学与工程学报,2015,34(增2):3703-3714.(Liu Xian,Huang Xiaodong.Experimental study of collapse capacity of straight joint segmental tunnel lining structure[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(Supp.2):3703-3714.(in Chinese))
[6]孙金.盾构隧道结构刚度不连续性对衬砌内力及变形影响分析[J].地下空间与工程学报,2016,12(1):55-60.(Sun Jin.Analysis of internal force and deformation of lining affected by structure stiffness discontinuity of shield tunnel[J].Chinese Journal of Underground Space and Engineering,2016,12(1):55-60.(in Chinese)).
[7]官林星.错缝拼装下管片宽度对盾构隧道力学行为的影响[J].地下空间与工程学报,2015,11(4):854-857.(Guan Linxing.Effect of segment width on behavior of shield tunnel assembled in staggered pattern[J].Chinese Journal of Underground Space and Engineering,2015,11(4):854-857.(in Chinese)).
[8]晏启祥,程曦,何川,等.深埋双圆盾构隧道衬砌荷载模式及其接头效应分析[J].铁道标准设计,2010(10):92-94.(Yan Qixiang,Cheng Xi,He Chuan,et al.Analysis of lining load pattern and joint effect of deeply-buried double-circle shield tunnel[J].Railway Standard Design,2010(10):92-94.(in Chinese))
[9]钟小春,朱伟,秦建设.盾构隧道衬砌管片通缝与错缝的比较分析[J].岩土工程学报,2003,25(1):109-112.(Zhong Xiaochun,Zhu Wei,Qin Jianshe.The comparison of shield tunnel with segment seams in sequence and in stagger[J].Chinese Journal of Geotechnical Engineering,2003,25(1):109-112.(in Chinese))
[10]郭瑞,何川,封坤,等.大断面水下盾构隧道管片接头抗弯刚度及其对管片内力影响研究[J].中国铁道科学,2013,34(5):46-52.(Guo Rui,He Chuan,Feng Kun,et al.Bending stiffness of segment joint and its effects on segment internal force for underwater shield tunnel with large cross-section[J].China Railway Science,2013,34(5):46-52.(in Chinese))
[11]董新平.一类盾构管片接头破坏历程的解析解[J].岩土工程学报,2013,35(10):1870-1875.(Dong Xinping.An analytical solution of the segment joint model for segmented tunnel lining[J].Chinese Journal of Geotechnical Engineering,2013,35(10):1870-1875.(in Chinese)).
[12]董新平.盾构衬砌整环破坏机理研究[J].岩土工程学报,2014,36(3):417-426.(Dong Xinping.Failure mechanism of the full-ring for segmented tunnel lining[J].Chinese Journal of Geotechnical Engineering,2014,36(3):417-426.(in Chinese))
[2]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 Hehua,Cui Maoyu,Yang Jinsong.Design model for shield lining segments and distribution of load[J].Chinese Journal of Geotechnical Engineering,2000,22(2):190-194.(in Chinese))
[3]孙金.盾构隧道结构刚度不连续性对衬砌内力及变形影响分析[J].地下空间与工程学报,2016,12(1):55-60.(Sun Jin.Analysis of internal force and deformation of lining affected by structure stiffness discontinuity of shield tunnel[J].Chinese Journal of Underground Space and Engineering,2016,12(1):55-60.(in Chinese)).
[4]朱伟,黄正荣,梁精华.盾构衬砌管片的壳-弹簧设计模型研究[J].岩土工程学报,2006,28(8):940-947.(Zhu Wei,Huang Zhengrong,Liang Jinghua.Studies on shell-spring design model for segment of shield tunnels[J].Chinese Journal of Geotechnical Engineering,2006,28(8):940-947.(in Chinese))
[5]柳献,黄晓冬.通缝拼装盾构隧道衬砌结构抗倒塌性能的试验研究[J].岩石力学与工程学报,2015,34(增2):3703-3714.(Liu Xian,Huang Xiaodong.Experimental study of collapse capacity of straight joint segmental tunnel lining structure[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(Supp.2):3703-3714.(in Chinese))
[6]孙金.盾构隧道结构刚度不连续性对衬砌内力及变形影响分析[J].地下空间与工程学报,2016,12(1):55-60.(Sun Jin.Analysis of internal force and deformation of lining affected by structure stiffness discontinuity of shield tunnel[J].Chinese Journal of Underground Space and Engineering,2016,12(1):55-60.(in Chinese)).
[7]官林星.错缝拼装下管片宽度对盾构隧道力学行为的影响[J].地下空间与工程学报,2015,11(4):854-857.(Guan Linxing.Effect of segment width on behavior of shield tunnel assembled in staggered pattern[J].Chinese Journal of Underground Space and Engineering,2015,11(4):854-857.(in Chinese)).
[8]晏启祥,程曦,何川,等.深埋双圆盾构隧道衬砌荷载模式及其接头效应分析[J].铁道标准设计,2010(10):92-94.(Yan Qixiang,Cheng Xi,He Chuan,et al.Analysis of lining load pattern and joint effect of deeply-buried double-circle shield tunnel[J].Railway Standard Design,2010(10):92-94.(in Chinese))
[9]钟小春,朱伟,秦建设.盾构隧道衬砌管片通缝与错缝的比较分析[J].岩土工程学报,2003,25(1):109-112.(Zhong Xiaochun,Zhu Wei,Qin Jianshe.The comparison of shield tunnel with segment seams in sequence and in stagger[J].Chinese Journal of Geotechnical Engineering,2003,25(1):109-112.(in Chinese))
[10]郭瑞,何川,封坤,等.大断面水下盾构隧道管片接头抗弯刚度及其对管片内力影响研究[J].中国铁道科学,2013,34(5):46-52.(Guo Rui,He Chuan,Feng Kun,et al.Bending stiffness of segment joint and its effects on segment internal force for underwater shield tunnel with large cross-section[J].China Railway Science,2013,34(5):46-52.(in Chinese))
[11]董新平.一类盾构管片接头破坏历程的解析解[J].岩土工程学报,2013,35(10):1870-1875.(Dong Xinping.An analytical solution of the segment joint model for segmented tunnel lining[J].Chinese Journal of Geotechnical Engineering,2013,35(10):1870-1875.(in Chinese)).
[12]董新平.盾构衬砌整环破坏机理研究[J].岩土工程学报,2014,36(3):417-426.(Dong Xinping.Failure mechanism of the full-ring for segmented tunnel lining[J].Chinese Journal of Geotechnical Engineering,2014,36(3):417-426.(in Chinese))