武汉地铁越江盾构隧道纵向不均匀变形及力学特性研究
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摘要
地铁盾构隧道,尤其是大型跨江海的水下地铁盾构隧道,局部埋深通常要大于普通地铁盾构隧道,而且要承受较高的水压力作用;盾构隧道作为特长线性结构,其纵向刚度较小,对于外部荷载的变化较为敏感,由此产生的不均匀变形是隧道工程中不可忽视的问题。文章针对武汉地铁越长江盾构隧道工程,通过三维数值计算探讨了埋深变化、水压变化、地层变化及穿越刚性结构物等因素对越江盾构隧道纵向不均匀变形及受力状态的影响。
Regarding subway shield tunnels,especially underwater subway tunnels with large cross sections,the local depth is usually greater than that of standard tunnels and therefore bears higher hydraulic pressure.As a linear structure,the longitudinal stiffness of a shield tunnel is relatively small,and it is more sensitive to the changes of the external load.The resulting uneven deformation should not be ignored.This paper discusses the effects of variations in overburdens,hydraulic pressures,and stratum as well as the passing of rigid structures on the longitudinal uneven deformation and stress state of a shield tunnel by three-dimensional numerical computations based on the shield tunnel crossing the Yangtze River in the Wuhan subway.
Regarding subway shield tunnels,especially underwater subway tunnels with large cross sections,the local depth is usually greater than that of standard tunnels and therefore bears higher hydraulic pressure.As a linear structure,the longitudinal stiffness of a shield tunnel is relatively small,and it is more sensitive to the changes of the external load.The resulting uneven deformation should not be ignored.This paper discusses the effects of variations in overburdens,hydraulic pressures,and stratum as well as the passing of rigid structures on the longitudinal uneven deformation and stress state of a shield tunnel by three-dimensional numerical computations based on the shield tunnel crossing the Yangtze River in the Wuhan subway.
引文
[1]林永国,廖少明,刘国彬.地铁隧道纵向变形影响因素的探讨[J].地下空间,2000,20(4):264-267Lin Yongguo,Liao Shaoming,Liu Guobin.A Discussion of the Factors Effecting on Longitudinal Deformation of Subway Tunnel[J].Underground Space,2000,20(4):264-267
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[4]张连成,叶飞,张铁柱.盾构隧道纵向变形机理分析[J].公路,2009,(8):255-259Zhang Liancheng,Ye Fei,Zhang Tiezhu.Mechanism Analysis of Longitudinal Deformation of Shield Tunnel[J].Highway,2009,(8):255-259
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[9]张军,张翅翔.河床冲淤引起过江盾构隧道纵向变形的研究[J].隧道建设,2009,29(2):152-156Zhang Jun,Zhang Chixiang.Study on Longitudinal Deformation of River-Crossing Shield-bored Tunnel Caused by RiverbedScouring and Siltation[J].Tunnel Construction,2009,29(2):152-156
[10]王如路.上海地铁盾构隧道纵向变形分析[J].地下工程与隧道,2009,(4):1-6Wang Rulu.Longitudinal Deformation Analysis of Shanghai Subway Shield Tunnels[J].Underground Engineering and Tunnels,2009,(4):1-6
[11]何川.シ-ルドトンネル縱断方向の地震時舉動に関する研究[D].东京:早稻田大学,博士学位论文,1999He Chuan.シ-ルドトンネル縱断方向の地震時舉動に関する研究[D].Tokyo,Waseda University,Doctoral Thesis,1999
[12]朱伟,译.日本土木学会.隧道标准规范(盾构篇)及解说[M].北京:中国建筑工业出版社,2001Zhu Wei translate.Japan Society of Civil Engineering.Standard Specification for Tunnelling(Shield Tunnels)and Its Definition[M].Beijing:China Architecture&Building Press,2001
[2]徐凌.软土盾构隧道纵向沉降研究[D].上海:同济大学,博士学位论文,2005Xu Ling.Research on Longitudinal Settlement of Shield Tunnel in Soft Ground[D].Shanghai:Tongji University,Doctoral Thesis,2005
[3]何应道.铁路隧道管片衬砌纵向结构力学特征研究[D].成都:西南交通大学,硕士学位论文,2009He Yingdao.Study on Longitudinal Mechanical Characteristics of Segment Lining Structure in Railway Tunnel[D].Chengdu:Southwest Jiaotong University,Master's Thesis.2009
[4]张连成,叶飞,张铁柱.盾构隧道纵向变形机理分析[J].公路,2009,(8):255-259Zhang Liancheng,Ye Fei,Zhang Tiezhu.Mechanism Analysis of Longitudinal Deformation of Shield Tunnel[J].Highway,2009,(8):255-259
[5]方勇,何川.南京越江盾构隧道纵向抗弯能力研究[J].地下空间与工程学报,2009,5(4):670-674Fang Yong,He Chuan.Study on the Longitudinal Anti-bending Capacity of Nanjing Cross-river Shield Tunnel[J].Chinese Journalof Underground Space and Engineering,2009,5(4):670-674
[6]黄宏伟,臧小龙.盾构隧道纵向变形性态研究分析[J].地下空间,2002,22(3):244-251Huang Hongwei,Zang Xiaolong.Research and Analysis on Longitudinal Deformation Characteristics of Shield Tunnel[J].Underground Space,2002,22(3):244-251
[7]周宁,袁勇.越江盾构隧道纵向变形曲率与管环渗漏的关系[J].同济大学学报(自然科学版),2009,37(11):1446-1451Zhou Ning,Yuan Yong.Correlation of Cross-river Shield Tunnel between Longitudinal Deformation Curvature and SegmentLeakage[J].Journal of Tongji University(Natural Science),2009,37(11):1446-1451
[8]戴宏伟,陈仁明,陈云敏.地面新施工荷载对临近地铁隧道纵向变形的影响分析研究[J].岩土工程学报,2006,28(3):312-316Dai Hongwei,Chen Renming,Chen Yunmin.Study on Effect of Construction Loads on Longitudinal Deformation of Adjacent MetroTunnels[J].Chinese Journal of Geotechnical Engineering,2006,28(3):312-316
[9]张军,张翅翔.河床冲淤引起过江盾构隧道纵向变形的研究[J].隧道建设,2009,29(2):152-156Zhang Jun,Zhang Chixiang.Study on Longitudinal Deformation of River-Crossing Shield-bored Tunnel Caused by RiverbedScouring and Siltation[J].Tunnel Construction,2009,29(2):152-156
[10]王如路.上海地铁盾构隧道纵向变形分析[J].地下工程与隧道,2009,(4):1-6Wang Rulu.Longitudinal Deformation Analysis of Shanghai Subway Shield Tunnels[J].Underground Engineering and Tunnels,2009,(4):1-6
[11]何川.シ-ルドトンネル縱断方向の地震時舉動に関する研究[D].东京:早稻田大学,博士学位论文,1999He Chuan.シ-ルドトンネル縱断方向の地震時舉動に関する研究[D].Tokyo,Waseda University,Doctoral Thesis,1999
[12]朱伟,译.日本土木学会.隧道标准规范(盾构篇)及解说[M].北京:中国建筑工业出版社,2001Zhu Wei translate.Japan Society of Civil Engineering.Standard Specification for Tunnelling(Shield Tunnels)and Its Definition[M].Beijing:China Architecture&Building Press,2001
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