在役导管架平台动态可靠性研究  

Research on Dynamic Reliability of In-service Jacket Platform

作　　者：余建星[1] 陈煜嘉 陈飞宇[1] 刘梦飞[1] 周雷 赵志恒[1] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津30007 [2]海洋石油工程股份有限公司,天津300461

出　　处：《船舶工程》2015年第8期98-102,共5页Ship Engineering

基　　金：国家重点基础研究发展计划资助项目(2014CB046803);国家自然科学基金资助项目(51239008);国家科技重大专项资助项目(2011ZX05030-006);天津科委资助项目(Z14SJENG0060)

摘　　要：针对在役海洋平台结构进行可靠性分析,动态可靠性评估是最为有效的方法。包括结构的动力可靠性和时变可靠性评估。针对海洋导管架平台的复杂环境,首先考虑结构腐蚀和损伤等因素,计及载荷效应与抗力效应的影响,并结合时间离散法,计算平台的时变可靠度。通过计算结构的传递函数和响应谱,并依据首次超越理论进行动力可靠度的计算。文章研究的方法能够为海洋平台服役期间的安全状况评估提供理论依据并为平台结构的维修提供指导。Dynamic reliability assessment is the most effective method for in-service engineering structures. It includes the assessment of dynamic reliability and time-varying reliability of structure. In this paper, by taking the effects of corrosion and damage into consideration, platform load effect and resistance effect was obtained. Finally, combined with the time-discrete method the time-varying reliability of the platform was determined. By calculating the transfer function and response spectrum, dynamic reliability can be calculated based on the First-Passage theory. The methods in this paper can provide a theoretical basis accurately to reflect the state of the offshore platform safety during their service and guidance for the maintenance of the platform structure.

关 键 词：动态可靠性 时变可靠性 载荷效应 传递函数 首次超越理论 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]