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《Chinese Journal of Underground Space and Engineering》 2012-03
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Ring Joint Deformation of Lining Structure of Metro Shield Tunnel in Shanghai Soft Soil

Li Xiangyu,Liu Ming,Li Mingyu(Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China)  
Engineering practices show that deformation characteristics of shield tunnel are ring joint dislocation and opening.A research is carried out to investigate the mechanism of longitudinal deformation of metro shield tunnel with straight joint in Shanghai soft soil when dislocation and opening happen simultaneously.Calculation method is proposed to evaluate the ring joint opening at arch bottom in every stage of deformation.Formulas of gasket deformation under four different working conditions according to waterproofing safety are established,and control indexes are obtained by combining the project practice of Shanghai Metro Line No.8.The calculation results show that simultaneous development of opening and dislocation intensifies the degree of damage of lining structure,and makes the gasket losing waterproofing effect more quickly,compared with the case of dislocation alone.
【CateGory Index】: U455.43
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【Citations】
Chinese Journal Full-text Database 6 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 LI Wenting(College of Civil Engineering,Shanghai Normal University,Shanghai 201418,China);Analytic solution of shield tunnel in soft soil under partially linearly distributed load[J];Sichuan Building Science;2012-01
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1 Xia Yang~1,Yue Fengtian~1,Shi Rongjian~1,Han Xul (1.School of Mechanics and the Civil Engineering & Architecture,China University of Mining and Technology,Xuzhou Jiangsu 221008,China);The Application of CFRP in Operational Subway Tunnel Segment Repairing[A];[C];2011
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