筒型基础海洋平台气浮拖航稳性分析

介绍了筒型基础平台充气浮运的浮稳性和自由运动周期的理论分析方法。气浮体的浮稳性通过稳性高参数来判断，并提出了稳性高参数的计算式。气浮体的自由运动周期采用单自由度弹簧体系来计算，部分参数通过试验确定。理论计算得到的稳心半径与模型试验和现场原型试验的测算值非常吻合，气浮结构的静稳性分析理论和浮态分析理论得到了相互验证。最后利用气浮分析理论对一工程结构进行了计算分析。

Stability Analysis of the Bucket Foundation

This paper introduces a theoretical method to analyze the air floating stability of a bucket foundation platform. The stability of the air floated platform is judged by the parameter of meta centric height. The formulas of calculating the meta centric height are presented. By simplifying the platform as a single freedom rigid body and spring system, the natural period of heaving and rolling are calculated by determining some parameters from test. The meta centric radius calculated by theory coincides well with the one obtained in model tests and prototype tests. The static stability analysis theory and the state analysis theory are verified each other by the comparison of the metacentric height and the tangent slope of the curve of the stabilizing force arm. As an example, the calculation and analysis of bucket foundation platform is introduced.