摘要
以渤海某导管架石油平台为例,建立了ANSYS数值计算模型。通过对平台施加海洋环境荷载,计算其基底剪力、倾覆弯矩和甲板最大位移。考虑了波流耦合最危险情况,求解最不利荷载组合下的各结构响应,包括平台承受的基底剪力,倾覆弯矩和甲板最大位移。提出4种计算平台响应的经验公式,通过非线性拟合,获得其具体的表达式。并与前人公式进行比较,选择误差最小者作为该平台的结构响应经验公式。为海洋平台的可靠度分析奠定基础。该方法可为其他平台的结构响应经验公式的拟合提供参考。
To take a jacket oil platform for an example, in this paper an ANSYS numerical calculation model was establishes. By applying the ocean environment loads, the base shear, overturning moment and the maximum displacement of the platform deck was calculated. By considering the most dangerous coupling of waves and current, different structural responses were calculated under the most unfavor- able combination of multi-loads. Four kinds of empirical formula were put forward to compute the re- sponses of the platform. Their expressions were obtained by the nonlinear fitting method. Comparing with the previous formulas, the optimum formula can be selected under the minimum errors. The determination of structural response formula will lay the solid base for the reliability analysis of ocean platform. This method can provide a reference to fit structural response formulae of other platforms.
出处
《海洋湖沼通报》
CSCD
北大核心
2013年第4期173-180,共8页
Transactions of Oceanology and Limnology
基金
国家自然科学基金项目(51279186)
中央高校基本科研业务费专项(201413003)资助
关键词
波高
流速
风速
导管架平台
结构响应
非线性拟合
wave height
current velocity
wind speed
jacket platform
structural response
nonlinear fitting
