锥体导管架海洋平台冰激结构振动响应分析  

Analysis of ice-induced structure vibration of offshore jacket platform with ice breaking cone

作　　者：季顺迎[1] 王安良[1] 车啸飞[1] 岳前进[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116023

出　　处：《海洋工程》2011年第2期32-39,共8页The Ocean Engineering

基　　金：国家海洋公益性行业科研专项经费项目(200805009);教育部新世纪优秀人才资助计划项目(2009-07);中央高校基本科研业务费专项资金资助项目(DUT10LK09)

摘　　要：渤海冰区油气开发中,在桩腿上安装抗冰锥体的导管架平台是最常见的结构形式。冰激结构振动不仅会造成平台结构的损伤,还将对平台上部管线和设备的安全运行构成极大的威胁,并影响平台作业人员的正常生活和生产操作。针对渤海冰区锥体平台结构冰激振动响应的三种计算方法进行了研究,即平台结构的有限元分析、简化的结构动力分析和冰振响应幅值统计分析。以辽东湾JZ20-2油气田的MUQ平台为例,对以上三种冰振响应计算方法进行对比,以讨论它们的一致性和各自的适用条件。结果表明,这三种分析方法的计算结果基本一致,但有些计算参数需要现场实测资料的确定。The jacket platforms with ice-breaking cones on piles are the most common structure type in ice regions of Bohai Sea for oil/gas exploitation.Ice-induced vibration can damage the platform structures,threaten the safety of oil pipelines and facilities on the desk,and affect the life and operation of staff on the platform.Thus,the analysis of ice-induced vibration of platform structures is an important issue for the offshore engineering in ice regions.It may provide a basis for predicting dangerous ice conditions.In this study,three computational approaches,i.e.,finite element model,Duhamel integration of simplified structure and statistical analysis based on field data,are developed to analyze the ice-induced vibration of jacket platform with ice-breaking cones.MUQ platform located in the JZ20-2 oil field of Liaodong Bay is taken as an example.The ice-induced vibration is simulated and compared with the above three approaches.The consistency of the methods and the application condition of each approach are discussed.The present study is an important portion in the ice forecasting for oil/gas exploitation in the ice-covered regions.

关 键 词：海冰 抗冰锥体 结构响应 海洋平台 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]