导管架式海洋平台Pall型摩擦阻尼控制研究
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摘要
笔者考虑几何非线性,首次提出了适用于海洋平台结构的Pall型摩擦阻尼器的一种新型应用方式,对安装Pall型摩擦阻尼器的不同坡度的等腰梯形框架进行了有限元分析,采用ANSYS程序对该Pall型摩擦阻尼器的滞回特性和力学特性进行了详细的分析.分析结果表明安装Pall型摩擦阻尼器能有效减小动荷载作用下的最大位移,并且大大提高框架的耗能能力,证明了这种新型Pall型摩擦阻尼器与原Pall摩擦阻尼器具有同样的耗能能力.最后,将这种摩擦阻尼器放置在海洋平台结构中,分析了此种摩擦阻尼器在海洋平台结构中的减震效果.
Considering geometric nonlinearity,this paper puts forward a new type of application of the Pall-typed friction damper for ocean platform structures for the first time.The different slopes of isosceles trapezoid frameworks with Pall-typed friction dampers are analyzed by finite element analysis in detail.The Pall-typed friction damper hysteretic characteristics and mechanical properties are analyzed by using the ANSYS program.The results show that the installation of Pall-typed friction dampers can effectively reduce the displacement of structures and enhance greatly the energy dissipation of ocean platform structures.And it proves that the new Pall-typed friction dampers have the same energy dissipation as the original Pall dampers.The results show that the Pall-typed frictional damping ocean platform structures can reduce the vibrations of ocean platform structures.
Considering geometric nonlinearity,this paper puts forward a new type of application of the Pall-typed friction damper for ocean platform structures for the first time.The different slopes of isosceles trapezoid frameworks with Pall-typed friction dampers are analyzed by finite element analysis in detail.The Pall-typed friction damper hysteretic characteristics and mechanical properties are analyzed by using the ANSYS program.The results show that the installation of Pall-typed friction dampers can effectively reduce the displacement of structures and enhance greatly the energy dissipation of ocean platform structures.And it proves that the new Pall-typed friction dampers have the same energy dissipation as the original Pall dampers.The results show that the Pall-typed frictional damping ocean platform structures can reduce the vibrations of ocean platform structures.
引文
[1]欧进萍,邹向阳,龙旭,等.振戎中学食堂楼耗能减振分析与设计[J].地震工程与工程振动,2001,21(1):109-122.OUJin-ping,ZOU Xiang-yang,LONG Xu,et al.Seismic Analysis and Design for Dining-RoomStructure of Zhenrong Middle Schoolwith Energy Dissipator[J].Journal of Earthquake Engineering and Engineering Vibration,2001,21(1):109-122.
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[7]吴斌,张纪刚,欧进萍.Pall型摩擦阻尼器的试验研究与数值分析[J].建筑结构学报,2003,24(2):7-13.WU Bin,ZHANGJi-gang,OUJin-ping.Testing and Numerical Analysis of Pall-Typed Frictional Dampers[J].Journal of BuildingStructures,2003,24(2):7-13.
[8]张纪刚.耗能减震支撑装置:中国,ZL200820225153.6[P].2009-09-09.ZHANGJi-gang.Setup of Braces for Energy Dissipation,Invention Patant:China,ZL200820225153.6[P].2009-09-09.
[9]欧进萍,龙旭,肖仪清,等.导管架式海洋平台结构阻尼隔振体系及其减振效果分析[J].地震工程与工程振动,2002,22(3):115-122.OUJin-ping,LONG Xu,XI AO Yi-qing,et al.Damping Isolation System and Its Vibration-Suppressed Efectiveness Analysis forOffshore PlatformJacket Structure[J].Journal of Earthquake Engineering and Engineering Vibration,2002,22(3):115-122.
[2]吴波,李惠,林立岩,等.东北某政府大楼采用摩擦阻尼器进行抗震加固的研究[J].建筑结构学报,1998,19(5):28-36.WU Bo,LI Hui,LI N Li-yan,et al.Strenthening the Earthquake Resistence of a Building Using Friction Dampers[J].Journal ofBuilding Structures,1998,19(5):28-36.
[3]张纪刚,吴斌,欧进萍.海洋平台结构SMA阻尼隔振振动台试验与分析[J].地震工程与工程振动,2007,27(6):241-247.ZHANGJi-gang,WU Bin,OUJin-ping.Shaking Table Tests and Analysis of Offshore Jacket PlatformStructures Model with SMADamping Isolation Systems[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(6):241-247.
[4]张纪刚,吴斌,欧进萍.渤海某平台磁流变智能阻尼隔振控制[J].沈阳建筑大学学报:自然科学版,2006,22(1):68-72.ZHANG Ji-gang,Wu Bin,OUJin-ping.A Offshore Platform with MRSmart DampingIsolation Control System[J].Journal of Sheny-ang Jianzhu University:Natural Science,2006,22(1):68-72.
[5]吴斌,张纪刚,欧进萍.考虑几何非线性的Pall型摩擦阻尼器滞回特性分析[j].工程力学,2003,20(1):21-26.WUBin,ZHANGJi-gang,OUJin-ping.The Analysis of Hysteretic Behavior of Pall-Typed Frictional Dampers Considering GeometryNonlinearity[J].Engineering Mechanics,2003,20(1):21-26.
[6]Wu B,Zhang J,Williams M,et al.Hysteretic Behavior of I mproved Pall-Typed Frictional Dampers[J].Engineering Structure,2005,27:1258-1267.
[7]吴斌,张纪刚,欧进萍.Pall型摩擦阻尼器的试验研究与数值分析[J].建筑结构学报,2003,24(2):7-13.WU Bin,ZHANGJi-gang,OUJin-ping.Testing and Numerical Analysis of Pall-Typed Frictional Dampers[J].Journal of BuildingStructures,2003,24(2):7-13.
[8]张纪刚.耗能减震支撑装置:中国,ZL200820225153.6[P].2009-09-09.ZHANGJi-gang.Setup of Braces for Energy Dissipation,Invention Patant:China,ZL200820225153.6[P].2009-09-09.
[9]欧进萍,龙旭,肖仪清,等.导管架式海洋平台结构阻尼隔振体系及其减振效果分析[J].地震工程与工程振动,2002,22(3):115-122.OUJin-ping,LONG Xu,XI AO Yi-qing,et al.Damping Isolation System and Its Vibration-Suppressed Efectiveness Analysis forOffshore PlatformJacket Structure[J].Journal of Earthquake Engineering and Engineering Vibration,2002,22(3):115-122.
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