基于损伤累积效应的半潜式平台结构疲劳分析方法  

The Structure Fatigue Analysis of Semi-Submersible Platform Based on Damage Accumulation Effect

作　　者：陶雷[1,2] 王润思 杨勇 强永华 

机构地区：[1]西南石油大学石油与天然气工程学院,成都610500 [2]西南石油大学油气藏地质与开发工程国家重点实验室,成都610500 [3]中海石油深海开发有限公司深圳分公司,广东珠海519000 [4]中海油田服务股份有限公司钻井事业部,广东深圳518067

出　　处：《重庆科技学院学报（自然科学版）》2016年第4期89-92,119,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金项目"基于钻井系统动力学的深海钻井升沉补偿装置机理研究"(51274171)

摘　　要：采用简化法对半潜式钻井平台的疲劳损伤和应力范围进行分析,并通过平台结构疲劳谱闭合分析得到波浪谱的短期分布密度函数,根据Miner线性累积疲劳损伤准则求解平台整体疲劳损伤。研究半潜式钻井平台在极端海况下的疲劳损伤对其疲劳寿命的影响,以及历史疲劳损伤对在用半潜式钻井平台的剩余寿命产生的影响,并提出基于历史损伤累积效应和极端海洋环境载荷作用的半潜式钻井平台剩余寿命分析方法。In this paper we use the simplified method to analyze the fatigue damage and stress range of semi - sub- mersible drilling platform, and get the short wave spectrum density function in the fatigue spectrum closed analysis of platform structure; a whole total fatigue damage on the platform is obtained by using Miner linear cumulative fatigue damage criteria. Based on the study on the fatigue damage effect of semi - submersible drilling platform to its fatigue life in extreme sea conditions, and analysis of the effects of the historical fatigue damage produced to the remaining life of the semi - submersible drilling platform in use, we proposed a research method to calculate the residual life of semi - submersible drilling platform based on historical damage cumulative effect and extreme ocean environment load.

关 键 词：半潜式平台 历史损伤 疲劳寿命 可靠性 累积效应 

分 类 号：TE951[石油与天然气工程—石油机械设备]