盾构隧道结构计算分析方法研究

发布时间：2018-10-15 20:33

【摘要】：为了应对盾构隧道因复杂赋存环境、多元结构形式及使用功能所面临的计算模型精细化、荷载取值合理化、计算模型精准化等高要求,通过调研盾构隧道结构分析方法的发展现状,综述了当前盾构隧道结构计算分析中荷载计算方法,并结合近10年来笔者所开展的相关研究工作对盾构隧道静、动力分析方法与计算模型进行了汇总和梳理。在盾构隧道荷载取值方面,阐述了深层空间水土荷载作用机理、施工阶段流固耦合效应以及岩质地层地震荷载合理取值等方面的问题及进展;在结构分析理论及模型方面,重点论述了盾构隧道整体化分析方法的内涵及思路、盾构隧道复杂接缝面力学行为、基于接头非线性抗弯刚度计算的结构分析方法以及结构整体受力特征及破坏模式的试验与实测手段验证三方面取得的成果;综述了以地层-结构组合体系反应位移法和纵向广义反应位移法为代表的盾构隧道横、纵向抗震分析方面的研究成果,并对盾构隧道结构分析中考虑耐久性因素的研究现状做了介绍。最后,针对大深度、高水压、特殊环境等盾构隧道工程的建设形势,展望了盾构隧道结构分析方法的发展趋势。
[Abstract]:In order to meet the high requirements of the complicated environment, multiple structure forms and function of shield tunnel, the calculation model is refined, the load is reasonable, the calculation model is accurate, and so on. Based on the investigation of the development of shield tunnel structure analysis methods, this paper summarizes the current load calculation methods in shield tunnel structure calculation and analysis, and combines the relevant research work carried out by the author in the past 10 years to analyze the shield tunnel statics. Dynamic analysis method and calculation model are summarized and combed. In the aspect of load selection of shield tunnel, the mechanism of deep space soil and water load, the fluid-solid coupling effect in construction stage and the reasonable value of seismic load of rock layer are expounded, and the structure analysis theory and model are also discussed. The intension and thought of the integrated analysis method of shield tunnel and the mechanical behavior of the complex joint surface of shield tunnel are discussed emphatically. The structural analysis method based on the nonlinear bending stiffness calculation of the joints and the results obtained from three aspects: the structural stress characteristics and the failure mode of the structure are verified by the test and the actual measurement method. In this paper, the research results of seismic analysis of shield tunnel in transverse and longitudinal direction are summarized, which are represented by the response displacement method and the longitudinal generalized response displacement method of the stratigraphic-structural composite system. The research status of durability factors in shield tunnel structure analysis is also introduced. Finally, in view of the construction situation of shield tunnel engineering, such as large depth, high water pressure and special environment, the development trend of shield tunnel structure analysis method is prospected.
【作者单位】：西南交通大学交通隧道工程教育部重点实验室;
【基金】：国家自然科学基金项目(51578462,U1361210) 国家重点研发计划项目(2016YFC0802201,2016YFC0802202)
【分类号】：U455.43

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