针对大断面盾构隧道管片接缝面构造复杂、管片大体积效应显著、衬砌结构纵-横向空间效应突出，受水压与地层条件影响敏感、施工期结构体系脆弱，常规方法难于准确处理大断面盾构隧道的结构分析问题，为此，提出准确获取局部参数、正确表征整体结构、精确体现交互作用的整体化分析要素，建立大断面盾构隧道的结构整体化分析方法，其主要技术内容包括： 准确获取管片接缝面的接头刚度,建立反映地层-管片结构-地下水交互作用特征的多体分析模型，充分考虑运营与施工阶段荷载演变的荷载体系，采用迭代分析方法实现结构内力与变形的精确计算。经模型、足尺、原型、现场等多层次的试验验证，该方法可准确体现高水压、多体接触、注浆层影响以及施工阶段等的力学效应。盾构隧道整体化分析方法已纳入国家标准GB/T 51438—2021《盾构隧道工程设计标准》，是对大断面及特殊盾构隧道所要求的结构计算分析方法。

Due to the complex conformation of joint surface, the significant volume effect of segments, the prominent longitudinal and transverse spatial effect of lining structures, as well as the sensitivity to water pressure and complex strata, and the unstable structure during assembly, the traditional calculation methods could not accurately cope with the structural analysis of shield tunnels with large crosssection. In view of this, the key point of the integrated analysis summarized as "accurately obtaining local parameters, correctly characterizing the overall structure, and precisely reflecting the interaction" is proposed against the structural characteristics of large crosssection shield tunnels. The integrated analysis method of large crosssection shield tunnels is established. Its main technical contents include: accurately obtaining the joint stiffness of segment joint surface, establishing a multibody analysis model reflecting the characteristics of stratumsegment structuregroundwater, comprehensively considering the load system of load evolution during operation and construction, and using iterative analysis method to accurately calculate the internal force and deformation of the structure. The model tests, fullscale tests, prototype tests, in-situ tests, and other multi-level tests show that the method can accurately reflect the mechanical effects of high water-pressure, multi-body contact, grouting layer, and construction stage, and can achievehighprecision analysis. The integrated analysis method for shield tunnel structure has been incorporated into the national design code, Standard for Design of Shield Tunnel Engineering (GB/T 51438-2021), and is required for structural analysis of large cross-section and special shield tunnels.