水中悬浮隧道概念设计及动力分析理论与模型试验进展

Development of Conceptual Design,Dynamic Analysis Theory and Model Experiment of Submerged Floating Tunnels

为了解水中悬浮隧道工程概念设计进展,进一步明确环境荷载和水中悬浮隧道(submerged floating tunnel,简称SFT)结构相互作用的动力模拟分析和模型试验研究方向,首先综述各国在SFT领域的工程研究概况,然后分别对SFT的管段、锚索动力模拟和波浪、洋流模型试验进展进行总结。结果表明:SFT的关键参M“协同浮重比”涵盖了结构张力腿锚索布置形式、倾角和浮重比与SFT水平、竖向振幅间的相互作用关系。考察综合性参量有助于研究结构自振频率、支撑系统张力水平的归一化变化规律。深水大型波浪流水池中波流耦合、流固耦合以及动水与静水结合的SFT模型试验是未来的研究方向。

In order to lean the conceptual design progress of submerged floating tunnel(SFT)and further clear the dynamic simulation analysis and research direction of model experiment for the interaction between environmental load and SFT structure,firstly,the survey of engineering researches about SFT in different countries are summarized;and then the experimental progress of SFT tube section,cable dynamics simulation,and wave and ocean current model are analyzed respectively.The analytical results show that the key parameters of SFT is the coordinated floating weight ratio,which covers the relationship among the structure tension,the configuration of leg anchor cables,the angle of inclination,the ratio of floating weight and the horizontal and vertical amplitudes of SFT.The investigation of comprehensive parameters is helpful to the study of normalized variation law of the structural natural frequency and the tension level of the bracing system.The SFT model experiment of wave flow coupling,fluid-solid coupling and dynamic water combined with hydrostatic water in large wave pools in deep water is the future research direction.