中国铁道科学2017，Vol.38Issue(3)：47-54,8.DOI:10.3969/j.issn.1001-4632.2017.03.07
通缝拼装盾构隧道横向刚度有效率计算方法及其影响因素
Calculation Method for Transverse Effective Rigidity Ratio of Shield-Driven Tunnel with Straight Joint and Its Influential Factors
摘要
Abstract
Based on the definition of transverse effective rigidity ratio for shield-driven tunnel,the analytical formula of transverse effective rigidity ratio for shield-driven tunnel with straight joint was deduced according to the longitudinal joint stiffness of segment,and the feasibility of the formula was verified by an example.Through the results of back analysis,the influence mechanism of the mechanical properties of soil and tunnel buried depth on the transverse effective rigidity ratio of shield-driven tunnel was clarified.Based on the analytical formula,the influence of multiple factors on transverse effective rigidity ratio was analyzed.Results show that the larger the diameter of segment ring,the greater the transverse effective rigidity ratio of shield-driven tunnel.The larger the bending rigidity of segment section,the smaller the longitudinal joint stiffness of segment and the more the number of segment ring will lead to the smaller the transverse effective rigidity ratio of shield-driven tunnel.The transverse effective rigidity ratio of shield driven tunnel not only represents the weakened degree of transverse rigidity of tunnel by segment longitudinal joints,but also reflects the proportion of the transverse deformation of segment ring which caused by the rotational deformation of segment longitudinal joints to the total transverse deformation of segment ring.The larger the proportion,the smaller the transverse effective rigidity ratio of shield driven tunnel,and vice versa.关键词
盾构隧道/横向刚度有效率/梁—弹簧模型/管片接头/接头刚度/均质圆环模型Key words
Shield-driven tunnel/Transverse effective rigidity ratio/Beam spring model/Segment joint/Joint stiffness/Uniform rigidity ring model分类
交通工程引用本文复制引用
黄大维,周顺华,冯青松,狄宏规,舒瑶..通缝拼装盾构隧道横向刚度有效率计算方法及其影响因素[J].中国铁道科学,2017,38(3):47-54,8.基金项目
国家自然科学基金资助项目(51608200,51478353,51368020,51468021) （51608200,51478353,51368020,51468021）
