随机波浪载荷下CII海洋平台结构可靠性分析
Reliability Analysis of Offshore Platform CII under Random Wave Loadings
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- DOI:
- 作者:
- 付方, 陆建辉, 李玉辉
FU Fang, Lu Jianhui, Li Yuhui
- 作者单位:
- 中国海洋大学工程学院, 山东青岛 266071
Engineering College, China Ocean University, Qingdao 266071, China
- 关键词:
- 导管架平台;可靠性分析;蒙特卡罗方法;ANSYS软件
jacket platform;reliability analysis;Monte Carlo Method;software ANSYS
- 摘要:
- 将位于渤海湾的CII导管架海洋平台看作空间钢架结构，应用ANSYS软件对导管架平台进行动力学分析，得到平台的基本动力学参数；考虑随机波浪作用，应用蒙特卡罗模拟法和有限元方法对结构进行可靠性分析。以各管件壁厚为输入变量，以甲板位移响应、导管架最大应力和平台总质量为输出变量进行灵敏度分析，评价影响输出变量变化的主要因素并计算出导管架构件的可靠度。该研究对导管架海洋平台的安全性评价和结构设计具有参考意义。
A jacket type offshore platform CII located in Bohai Bay was modeled as a steel frame structure and the FEM software ANSYS was applied to study dynamic characteristics of the structure.With the responses of the platform under random wave loadings,the structural reliability analysis using Monte Carlo Method and FEM were carried out.The wall thicknesses of pipe elements were chosen to be the input variable.The displacement response of the deck,the maximum stress of the jacket and total mass of the platform were taken as the output variables.The main factors affecting the output variables were appraised in the course of sensitivity analysis,meanwhile the jacket reliability was worked out.The results show that the proposed method is significative for the security evaluation and structure design of a jacket type offshore platform.2006,6(6): 22-26 收稿日期：2006-2-19分类号：TE952.02基金项目：青岛市科技发展计划项目(05-2-JC-58)作者简介：付方（1981- ），男，中国海洋大学工程学院在读硕士研究生。参考文献：
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