海洋独立支撑钢管桩的涡振研究
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摘要
对在水流、波浪力作用下海洋独立支撑结构所产生的涡振进行非线性研究。该研究的目的是通过改变独立支撑结构自振频率来控制结构产生的涡振,以避免结构产生涡振破坏。提出涡振概念;分析独立支撑结构1产生涡振条件、作用荷载、涡振频率以及振动方程的解。结果表明通过改变独立支撑结构EI值或采取一些特殊措施,增加结构的自振频率,来避免其在施工过程中产生的涡振破坏,对实际工程具有重大理论价值。
The vortex vibration of offshore independence support structure under current and wave is studied by non-linear theory.The objective of the research was to control the vortex vibration of structure by changing its frequency so as to prevent it from producing breakage of vortex vibration.The concept of vortex vibration was put forwarded.It analyzed many character of independence support structure,for example the condition of produce vortex vibration,the load,structure frequency and the solution of vibration equation.The result seems to suggest that the EI value of steel pipe-piles are changed or some special measures are adopted to increase the free vibration frequency,so as to avoid it yield vortex destroy in the process of construction.This is an important value theory to actual engineering.
The vortex vibration of offshore independence support structure under current and wave is studied by non-linear theory.The objective of the research was to control the vortex vibration of structure by changing its frequency so as to prevent it from producing breakage of vortex vibration.The concept of vortex vibration was put forwarded.It analyzed many character of independence support structure,for example the condition of produce vortex vibration,the load,structure frequency and the solution of vibration equation.The result seems to suggest that the EI value of steel pipe-piles are changed or some special measures are adopted to increase the free vibration frequency,so as to avoid it yield vortex destroy in the process of construction.This is an important value theory to actual engineering.
引文
[1][英]M.J.汤姆林森.桩的设计与施工[M].人民交通出版社.1984,1.p278-279
[2]赵光恒主编.结构动力学.中国水利水电出版社[M].p83-86,p164-166
[3]马弛,董艳秋,杨丽婷.海洋平台张力腿在两种边界条件下的涡激非线性振动的比较研究[J].船舶力学2000,2
[4]刘立名,余建星等.基于非线性理论的海底管跨涡激共振可靠性研究[J].海洋技术.2003,6
[5]仇原鹰,魏强,段宝岩.大型射电望远镜舱索柔性结构涡激振动的数值模拟[J].西安电子科技大学学报.2003,10.p625-629
[6]倪振华.振动力学.西安交通大学出版社[M].p367-388
[7]陈爱荣,项海帆.斜拉桥涡激流转振动的被动控制.同济大学学报,1994
[8]余建星,孙大军,罗延生等.涡激振动下的管桥段的模糊动力可靠性研究.地震工程与工程振动,2002,10,P36-40
[9]姚雄亮,陈起富.串列双圆柱在均匀流场中涡激振动综述.哈尔滨船舶工程学院学报,1994,12,p1-15
[10]Carl M.Larsen,Karl L.Halse J.1999.Comparison of Modelsfor Vor-tex Induced Vibrations of Slender Marine Structures[J].Marine Structures10(1997),p413-441
[11]Wanjun Kim.Coupled Cross—Flowand In-Line Vortex-Induced Vi-bration of Elastic Cable Systems,the Degree of Doctor for Michigan University,USA,2001
[12]Rupert Gerlds,Williams.The Effect of Neighboring Bodles on the Voetex-Excited Response of a Structure.the Degree of Doctor for U-niversity of Miami,USA,2002
[2]赵光恒主编.结构动力学.中国水利水电出版社[M].p83-86,p164-166
[3]马弛,董艳秋,杨丽婷.海洋平台张力腿在两种边界条件下的涡激非线性振动的比较研究[J].船舶力学2000,2
[4]刘立名,余建星等.基于非线性理论的海底管跨涡激共振可靠性研究[J].海洋技术.2003,6
[5]仇原鹰,魏强,段宝岩.大型射电望远镜舱索柔性结构涡激振动的数值模拟[J].西安电子科技大学学报.2003,10.p625-629
[6]倪振华.振动力学.西安交通大学出版社[M].p367-388
[7]陈爱荣,项海帆.斜拉桥涡激流转振动的被动控制.同济大学学报,1994
[8]余建星,孙大军,罗延生等.涡激振动下的管桥段的模糊动力可靠性研究.地震工程与工程振动,2002,10,P36-40
[9]姚雄亮,陈起富.串列双圆柱在均匀流场中涡激振动综述.哈尔滨船舶工程学院学报,1994,12,p1-15
[10]Carl M.Larsen,Karl L.Halse J.1999.Comparison of Modelsfor Vor-tex Induced Vibrations of Slender Marine Structures[J].Marine Structures10(1997),p413-441
[11]Wanjun Kim.Coupled Cross—Flowand In-Line Vortex-Induced Vi-bration of Elastic Cable Systems,the Degree of Doctor for Michigan University,USA,2001
[12]Rupert Gerlds,Williams.The Effect of Neighboring Bodles on the Voetex-Excited Response of a Structure.the Degree of Doctor for U-niversity of Miami,USA,2002
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