悬浮隧道动力响应分析方法及模拟的研究进展

发布时间：2018-04-21 04:47

本文选题：隧道工程 + 悬浮隧道　；参考：《中国公路学报》2017年01期

【摘要】：为了明确悬浮隧道在水下环境及交通荷载作用下的受力行为,以及承受冲击、地震等极端荷载时亟待研究解决的动力问题,首先综述了波流环境中悬浮隧道管体、锚索构件动力响应、振动稳定性分析与锚索疲劳损伤评估等方面的研究进展,对比了几种锚索振动理论分析模型的差异;同时针对悬浮隧道在运营中可能面临的地震、极端波浪等偶然作用威胁,总结归纳了该方面结构振动研究的最新进展。分析结果表明:现有的动力分析理论模型基本采用将隧道管体、锚索分开讨论或者对两者耦合振动系统简化处理的方法,而对考虑车辆移动荷载作为外部激励时相互耦合的动力研究几乎未见,因此有必要在流体-悬浮隧道-车辆系统耦合振动方面展开研究;由于地震、冲击荷载等偶然作用导致结构振动的计算模型不够精确及缺乏试验数据,有必要建立多种特殊荷载和灾害作用下的多尺度动力响应理论模型并开展试验研究。
[Abstract]:In order to make clear the behavior of suspended tunnel under underwater environment and traffic load, and the dynamic problems that need to be solved when subjected to extreme loads such as shock and earthquake, the pipe body of suspended tunnel in wave-current environment is first summarized. The research progress in dynamic response, vibration stability analysis and fatigue damage assessment of anchor cable members are compared, and the differences of several theoretical analysis models of cable vibration are compared. The recent progress of structural vibration research in this field is summarized. The results show that the existing theoretical model of dynamic analysis is based on the discussion of tunnel tube and cable separately or the simplification of the coupled vibration system. However, few studies have been done on the coupling dynamics of vehicle moving load as external excitation, so it is necessary to study the coupled vibration of fluid-suspension tunnel-vehicle system. The calculation model of structural vibration caused by accidental action such as impact load is not accurate enough and lack of experimental data. It is necessary to establish a multi-scale dynamic response model under special loads and disasters and to carry out experimental research.
【作者单位】：浙江大学建筑工程学院;
【基金】：国家自然科学基金项目(51279178,51541810)
【分类号】：U451

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