【摘要】 随着我国大型水下盾构隧道的日益兴建,一系列结构问题愈发凸显,对结构的安全性提出了挑战,大型水下盾构隧道结构已逐渐成为国内外研究的热点.针对大型水下盾构隧道在设计阶段、施工阶段及长期运营阶段可能存在的结构问题,综述了国内外相关的重要研究,主要包括:隧道横向结构的力学特征与分析方法,纵向结构变形与稳定性,隧道结构及附属结构物的地震响应及抗震与减震措施.总结了近期的研究成果与新进展,包括:整环管片衬砌结构力学特征与分析方法,接头力学性能,隧道结构纵向稳定性,施工期流固耦合效应及上浮机理,施工荷载的影响,火灾的影响与评估,水环境作用下管片衬砌结构的长期耐久性及结构性能评价等.最后,讨论了尚存的问题以及相关结构问题的研究趋势.更多还原

【Abstract】 With the construction of underwater shield tunnels with large cross-section in China,some structural problems become more prominent,and the structure safety is a new challenge to face.The structure of underwater shield tunnels with large cross-section is becoming a research hotspot.Structural issues of large river-crossing or sea-crossing shield tunnels have inseparable relation to national preparedness and public safety.For the structural issues in design,construction and long-term operation,the recent developments in related fields were reviewed,including the analysis method and mechanical characteristics of segmental lining structures,the longitudinal stability of structure,the seismic behavior and vibration-absorption measures for shield tunnels and their secondary structures.In addition,the recent research results and new progress were summarized,including the analysis method and mechanical characteristics of segmental lining structures,the behavior of joints,the longitudinal stability of structure,the effect of coupling seepage and stress fields,and the upward movement of shield tunnel,the influence of abnormal loads in construction,the impact and evaluation of a fire in a tunnel,and the long-term durability and evaluation of segmental lining structures under a water environment.Moreover,a development tendency of the structural issues and problems to be solved were discussed.更多还原