悬浮隧道是跨越水域连接陆地的新型交通构筑物，其具有受自然条件影响小和对航运影响小等优点，拥有巨大的工程应用价值。悬浮隧道工程可行性研究对海洋资源开发和空间利用有深远意义，而目前对波浪作用下悬浮隧道水动力特性的研究局限于势流理论、二维空间、线性波浪条件和刚性主体结构，难以反映真实海洋环境下的规律特征。本项目拟基于粘性流理论建立波浪与带预紧力锚泊约束结构相互作用的数学模型，并分别对固定式和锚泊式悬浮隧道水动力特性开展计算研究。考察波幅、波频率、模型尺度、空间维度、主体截面形状、淹没深度、浮重比、结构刚度、锚泊布置形式、锚链长度、流体粘性等因素对悬浮隧道主体受力、运动响应和锚泊受力的影响。通过结果对比和流场特征分析，掌握波浪环境、主体结构形式和锚泊形式对悬浮隧道水动力特性的影响规律；探明波浪非线性和结构柔性的影响特征；并揭示粘性效应的机理。本项目的完成将为悬浮隧道的工程可行性提供理论依据。

Submerged floating tunnel is a new form of transportation infrastructure for crossing water areas and linking lands. With little affection on shipping and low influence by the environment, the submerged floating tunnel shows great value in engineering applications. Studying the engineering feasibility of the submerged floating tunnel has far-reaching significance for exploration of ocean resources and utilization of ocean space. Current numerical researches on hydrodynamic characteristics of submerged floating tunnel under wave action are mostly based on the potential flow theory and limited in two dimensions (2D), considering small-amplitude linear incident waves and rigid major structures. The true hydrodynamic characteristics in the actual marine environment, therefore, are concealed behind the calculation results. This project aims to establish a mathematical model of the interaction between waves and structures under mooring constraints with preloading forces based on the viscous flow theory. The calculations on hydrodynamic forces and motion response of major structures and mooring loads are performed using various wave amplitudes, wave frequencies, model scales, spatial dimensions, cross-section shapes of main structures, submerged depth, ratios of buoyancy and gravity, structural stiffness, mooring line arrangements, mooring line lengths and fluid viscosity. By comparing the numerical results and the analysis on flow fields around structures, the influence rules of the above-mentioned wave environment, major structure form and mooring form on the hydrodynamic characteristics of the submerged floating tunnel under wave action will be acquired. Further, the influences of wave nonlinearity and structural flexibility on the hydrodynamic characteristics will be discovered. Finally, the mechanism of the viscous effects will be revealed. This research will provide a theoretical basis for the engineering feasibility of submerged floating tunnels.