考虑多模块水动力干扰-非均匀海底-连接器-系泊耦合作用的超大型浮体动力响应特性研究

本项目围绕国家海洋权益维护和资源开发的重大战略需求，聚焦多模块超大型浮体动力响应特性问题。基于申请人及课题组在海洋浮式结构物水动力学、结构力学和非线性系泊理论等领域的研究基础，对多模块超大型浮体的动力响应特性进行准确的建模分析，包括模块间的水动力干扰、非均匀海底波浪散射效应、连接器变形-回复力关系、浅水系泊非线性特性等，建立考虑多模块水动力干扰-非均匀海底-连接器-系泊耦合作用的超大型浮体动力响应数值模型。基于几何和重力相似准则，开展多模块超大型浮体动力响应模型试验研究，验证和校准该数值模型。综合利用解析、数值和试验等多种手段，研究超大型浮体系统参数对浮体运动响应、连接器载荷和系泊缆张力等的影响，揭示系统耦合作用机理；深入研究多模块超大型浮体动力响应特性，指导参数优化选型和安全作业评估。项目的研究成果对多模块超大型浮体的设计建造具有重要理论价值，并为其实际应用提供重要的科学依据和技术支撑。

Focusing on the major strategic needs of national maritime rights protection and resource development, this project focuses on the multi-module very large floating structure (VLFS) dynamic response characteristics. Based on the research fundamental of the applicant and the research team in the fields of hydrodynamics, structural mechanics and nonlinear mooring theory of floating offshore structures, through accurate modeling and analysis of the dynamic response characteristics of multi-module VLFS, including multi-modules hydrodynamic interference, uneven sea-bed wave scattering pattern, connector deformation-recovery force relationship, mooring nonlinear characteristics in shallow water, etc., a numerical model of multi-module VLFS dynamic response considering multi-module hydrodynamic interference-uneven subsea-connector-mooring coupling behavior is established. Based on geometric and gravity similarity criteria, a multi-module VLFS dynamic response model test study was carried out to verify and calibrate the numerical model. The effects of multi-module VLFS parameters on the floating structure motion response, connector load and mooring line tension are studied by collaborative means of analysis, numerical and experimental methods. The coupling mechanism of the system is revealed. The multi-module VLFS dynamic response characteristics are deeply studied to guide parameter optimization and safety operation assessment. The research results of the project have important theoretical value for the design and construction of multi-module VLFS, and provide important scientific basis and technical support for its practical application.