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The application of very large floating structure (VLFS) to the utilization of ocean space and exploitation of ocean resources has become one of the issues of great interest in international ocean engineering field. Owing to the advantage of simplicity in structure and low cost of construction and maintenance, box-type VLFS can be used in the calm water area near the coast as the structure configuration of floating airport. In this paper, a 3D linear hydroelastic theory is used to study the dynamic response of box-type VLFS in sinusoidal regular waves. A beam model and a 3D FEM model are respectively employed to describe the dynamic characteristics of the box-type structure in vacuum. A hydrodynamic model (3D potential theory of flexible body) is applied to investigate the effect of different dry models on the hydroelastic response of box-type structure. Based on the calculation of hydroelastic response in regular waves, the rigid body motion displacement, flexible deflection, and the short term and long  相似文献   
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超大型海洋浮式结构物概念设计的关键技术问题   总被引:13,自引:5,他引:8  
应用超大型海洋浮式结构物进行海洋空间利用和海洋资源开发,是目前海洋工程界的研究热点。概念设计是超大型海洋浮式结构物研究的基础。本文从设计准则、结构型式、建造材料、模块连接器、系泊系统等几个方面对概念设计的关键技术问题作了归纳,对超大型海洋浮式结构物的概念设计有一定的参考价值。  相似文献   
3.
中等水深轻张型张力腿平台型式研究   总被引:1,自引:0,他引:1  
根据我国海上边际油田的分布特点,100m-300m左右中等水深范围是一个很有开发潜力的海域。运用常规技术已很难在这一海域取得更大的经济效益。而更经济有效地开发这些边际油田对我国来说具有重大意义。本文对适合我国中等水深海域国际油田开发的轻型张力腿平台型式进行了探索,提出了三种轻型张力腿平台,对其运动性能及系索张力进行了比较,以期找适合我国中深水海域边际油田开发的张力腿平台型式。  相似文献   
4.
Dynamic Responses of Mobile Offshore Base Connectors   总被引:1,自引:1,他引:0  
YU  Lan 《中国海洋工程》2003,17(4):469-479
A Mobile Offshore Base (MOB) is a multi-purpose logistics base, which can be stationed in coastal or international waters. In the conceptual design of the MOB, attention should be paid to the dynamic responses of the inter-module connectors because tremendous loads occur in the connectors. In this paper, a study on dynamic responses of the MOB connectors is carried out by use of the Rigid Module Flexible Connector (RMFC) model which assumes that the module stiffness is significantly larger than that of the connector. In the analysis, the connector is modeled as a linear spring, which restricts relative translations but allows for relative rotations of modules. The 3-D source distribution method is adopted to determine the hydrodynamic forces of the modules, and the hydrodynamic interaction between modules is taken into account. The module motions and connector loads for 12 connector stiffness cases in regular and irregular waves are calculated with the multi-rigid-body motion equations. And the calculat  相似文献   
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