桁架桩腿自升式平台动力响应
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摘要
基于ANSYS软件,建立桁架桩腿自升式平台的三维有限元模型。在风暴自存工况下,通过静力分析得到平台的最大应力和位移;通过模态分析,得到结构的前六阶频率和振型;在模态分析基础上对平台进行瞬态动力响应分析,得到平台的动力响应。结果表明:平台在风暴自存工况下能够保证安全,此外动载荷对平台的影响较显著,对平台进行分析时须考虑动载荷对结构的影响。研究结果对桁架桩腿自升式平台的结构分析与安全校核具有一定的指导意义。
Based on ANSYS software,a 3 Dfinite element model of the jack-up platform with truss-type legs is established.The maximum stress and displacement of the platform are obtained by static analysis under the condition of storm self-existence.The first 6 frequencies and vibration modes of the structure are obtained by modal analysis.The transient dynamic response of the platform is analyzed on the basis of the modal analysis,and the dynamic response of the platform is obtained.The results show that the platform can ensure safety under the condition of storm self-existence.The influence of dynamic load on the platform is significant.The influence of dynamic load on the structure must be considered when the platform is analyzed.The research results have certain guiding significance for structural analysis and safety check of the jack-up platform with truss legs.
Based on ANSYS software,a 3 Dfinite element model of the jack-up platform with truss-type legs is established.The maximum stress and displacement of the platform are obtained by static analysis under the condition of storm self-existence.The first 6 frequencies and vibration modes of the structure are obtained by modal analysis.The transient dynamic response of the platform is analyzed on the basis of the modal analysis,and the dynamic response of the platform is obtained.The results show that the platform can ensure safety under the condition of storm self-existence.The influence of dynamic load on the platform is significant.The influence of dynamic load on the structure must be considered when the platform is analyzed.The research results have certain guiding significance for structural analysis and safety check of the jack-up platform with truss legs.
引文
[1]娄明阳.自升式海洋平台动力特性分析[D].哈尔滨:哈尔滨工程大学,2013.
[2]彭程.自升式平台动力响应及疲劳分析研究[D].天津:天津大学,2007.
[3]陆浩华.自升式海洋平台结构动力响应分析[D].武汉:武汉理工大学,2005.
[4]YU H,LI X,YANG S.Dynamic analysis method of offshore jack-up platforms in regular and random waves[J].Journal of Marine Science and Application,2012,11(01):111-118.
[5]XU C H,CHEN G M,XIE J,et al.A general review of research works on the structure response analysis and reliability assessment for jack-up platform[J].China Offshore Platform,2003,18(04):6-11.
[6]CASSIDY M J,TAYLOR P H,TAYLOR R E,et al.Evaluation of long-term extreme response statistics of jack-up platforms[J].Ocean Engineering,2002,29(13):1603-1631.
[7]BIENEN B,CASSIDY M J.Advances in the three-dimensional fluid-structure-soil interaction analysis of offshore jackup structures[J].Marine Structures,2006,19(02-03):110-140.
[8]竺艳蓉.海洋工程波浪力学[M].天津:天津大学出版社,1991.
[9]金新阳.《建筑结构荷载规范》修订原则与要点[J].建筑结构学报,2011,32(12):79-85.
[10]王瑜.基于有限元分析的自升式平台桁架腿选型优化设计[D].天津:天津大学,2009.
[11]王力.自升式平台整体与局部有限元模型的关系研究[D].天津:天津大学,2008.
[12]李红涛,李晔.自升式钻井平台结构强度分析研究[J].中国海洋平台,2010,25(02):28-33.
[13]徐志海,胡健.自升式平台的操作工况[J].船舶设计通讯,2010(01):62-64.
[14]黄小伟.自升式平台结构计算模型分析研究[D].天津:天津大学,2008.
[2]彭程.自升式平台动力响应及疲劳分析研究[D].天津:天津大学,2007.
[3]陆浩华.自升式海洋平台结构动力响应分析[D].武汉:武汉理工大学,2005.
[4]YU H,LI X,YANG S.Dynamic analysis method of offshore jack-up platforms in regular and random waves[J].Journal of Marine Science and Application,2012,11(01):111-118.
[5]XU C H,CHEN G M,XIE J,et al.A general review of research works on the structure response analysis and reliability assessment for jack-up platform[J].China Offshore Platform,2003,18(04):6-11.
[6]CASSIDY M J,TAYLOR P H,TAYLOR R E,et al.Evaluation of long-term extreme response statistics of jack-up platforms[J].Ocean Engineering,2002,29(13):1603-1631.
[7]BIENEN B,CASSIDY M J.Advances in the three-dimensional fluid-structure-soil interaction analysis of offshore jackup structures[J].Marine Structures,2006,19(02-03):110-140.
[8]竺艳蓉.海洋工程波浪力学[M].天津:天津大学出版社,1991.
[9]金新阳.《建筑结构荷载规范》修订原则与要点[J].建筑结构学报,2011,32(12):79-85.
[10]王瑜.基于有限元分析的自升式平台桁架腿选型优化设计[D].天津:天津大学,2009.
[11]王力.自升式平台整体与局部有限元模型的关系研究[D].天津:天津大学,2008.
[12]李红涛,李晔.自升式钻井平台结构强度分析研究[J].中国海洋平台,2010,25(02):28-33.
[13]徐志海,胡健.自升式平台的操作工况[J].船舶设计通讯,2010(01):62-64.
[14]黄小伟.自升式平台结构计算模型分析研究[D].天津:天津大学,2008.