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。
In order to meet the high demand of sophisticated and accurate calculation model,rational evaluation of loads caused by complex construction circumstances,multiple structure and functions,the computing methods of loads in recent shield tunnel design were reviewed by investigation and survey,and the static and dynamic analysis methods and calculation models on the basis of related researches in the past 10 years were summarized.As to the parameters of loads,problems and the development of the mechanism of water and earth pressure in the deep space,the fluid-solid coupling effect and the reasonable parameters of seismic loads in rocks were discussed.As for calculation theory and models,this paper focused on the main points of holistic analysis method of shield tunnel.Whilst the recent achievements in mechanic behaviors upon complex joints＇ interface of shield tunnels,analysis method based on non-liner iterative algorithm of joints bending stiffness,integral mechanical characteristics and failure modes of shield tunnels evaluated by experiments and in-site measurements were introduced.Furthermore,taking seismic deformation method of ground-structure continuum mode and generalized longitudinal seismicdeformation method as representatives,the achievement of anti-seismic analysis in transverse and longitudinal direction was summarized.The recent research on the structural analysis of shield tunnel was introduced,taking durability into account.Finally,considering the application prospect of shield tunnel constructed in deep space,under high water pressure,or in specific circumstances,this paper provided an outlook of the developing trend of shield tunnels structural analysis.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2017年第8期1-14,共14页
China Journal of Highway and Transport
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)
关键词
盾构隧道
结构计算分析
综述
整体化分析方法
抗震分析
荷载厘定
结构模型化
shield tunnel
structural analysis
review
holistic analysis method
anti-seismic analysis
load evaluation
structural modeling
