SMA阻尼器设计及框架结构地震反应控制分析
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摘要
采用SMA(Shape Memory Alloy)旗帜型恢复力模型,深入分析了预变形、超弹性拉伸位移、刚度和长度4个参数对SMA阻尼器耗能系数的影响规律;分别建立了预变形、拉伸位移与耗能系数的关系式,并提出SMA阻尼器刚度和长度的确定方法。在分析结果的基础上,设计了一种新型超弹性SMA阻尼器。为了验证SMA阻尼器的减震效果,针对某5层框架结构,分析了框架结构在无控和安装SMA阻尼器两种情况下的地震反应。结果表明:安装SMA阻尼器后,框架结构顶层水平位移和加速度反应都比未控时降低50%以上,因此,SMA阻尼器可以有效抑制结构地震反应。
With the SMA(Shape Memory Alloy) banner model,the effect of pre-stressing,displacement,stiffness and length to the energy dissipation ratio is studied.The two equations,which are of pre-stressing and displacement to the energy dissipation ratio are proposed.The methods are put forward to confirm the stiffness and length of SMA.Based on the above analysis,a new pull-press SMA damper is designed.The simulation analysis on seismic response of five-floor frame with SMA damper shows that the displacement and acceleration of the top floor are reduced by 50% at least.It verifies that this kind of SMA damper can availably suppress the seismic responses of structure.
With the SMA(Shape Memory Alloy) banner model,the effect of pre-stressing,displacement,stiffness and length to the energy dissipation ratio is studied.The two equations,which are of pre-stressing and displacement to the energy dissipation ratio are proposed.The methods are put forward to confirm the stiffness and length of SMA.Based on the above analysis,a new pull-press SMA damper is designed.The simulation analysis on seismic response of five-floor frame with SMA damper shows that the displacement and acceleration of the top floor are reduced by 50% at least.It verifies that this kind of SMA damper can availably suppress the seismic responses of structure.
引文
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[2]周云,徐赵东,赵鸿铁.粘弹性阻尼结构的性能、分析方法及工程应用[J].地震工程与工程振动,1998,18(3):96～108Zhou Yun,Xu Zhao-dong,Zhao Hong-tie.Study onbehavior,analytical,methods and application of visco-elastic structure[J].Earthquake Engineering andEngineering Vibration,1998,18(3):96～108(inChinese)
[3]Graesser E J,Cozzarelli F A.Shape memory alloys asnew materials for seismic isolation[J].Journal ofEngineering Mechanics,1991,117(11):2590～2608
[4]李忠献,陈海泉,李延涛.斜拉桥参数振动有限元分析与半主动控制[J].工程力学,2004.21(1):131～135Li Zhong-xian,Chen Hai-quan,Li Yan-tao.Finiteelement analysis and semi-active control of parametricvibrations of cable-stayed bridges[J].MechanicsEngineering,2004,21(1):131～135(in Chinese)
[5]李忠献,陈海泉,刘建涛.应用SMA复合橡胶支座的桥梁隔震[J].地震工程与工程振动,2002,22(2):143～148Li Zhong-xian,Chen Hai-quan,Liu Jian-tao.Bridgeisolation with SMA-composite rubber bearing[J].Earthquake Engineering and Engineering Vibration,2002,22(2):143～148(in Chinese)
[6]Peter W C,et al.Experimental and analytical studies ofshape memory alloy damper for structural control[A].Proceedings of SPIE 2445[C],1995,241～251
[7]Dolce,Mauro,Cardone,Donatello,Marnetto,Roberto.Implementation and testing of passive control devicesbased on shape memory alloys[J].EarthquakeEngineering and Structural Dynamics,2000,29(7):2000:945～968
[8]Robert C K,et al.Structural damping with shapememory alloys:one-class devices[A].Proceedings ofSPIE 2445[C],1995,225～240
[9]Masuda A,Noori M.Optimization of hystereticcharacteristics of damping devices based on pseudoelasticshape memory alloy[J].International Journal of Non-linear Mechanics,2002,37(8):1375～1386
[2]周云,徐赵东,赵鸿铁.粘弹性阻尼结构的性能、分析方法及工程应用[J].地震工程与工程振动,1998,18(3):96～108Zhou Yun,Xu Zhao-dong,Zhao Hong-tie.Study onbehavior,analytical,methods and application of visco-elastic structure[J].Earthquake Engineering andEngineering Vibration,1998,18(3):96～108(inChinese)
[3]Graesser E J,Cozzarelli F A.Shape memory alloys asnew materials for seismic isolation[J].Journal ofEngineering Mechanics,1991,117(11):2590～2608
[4]李忠献,陈海泉,李延涛.斜拉桥参数振动有限元分析与半主动控制[J].工程力学,2004.21(1):131～135Li Zhong-xian,Chen Hai-quan,Li Yan-tao.Finiteelement analysis and semi-active control of parametricvibrations of cable-stayed bridges[J].MechanicsEngineering,2004,21(1):131～135(in Chinese)
[5]李忠献,陈海泉,刘建涛.应用SMA复合橡胶支座的桥梁隔震[J].地震工程与工程振动,2002,22(2):143～148Li Zhong-xian,Chen Hai-quan,Liu Jian-tao.Bridgeisolation with SMA-composite rubber bearing[J].Earthquake Engineering and Engineering Vibration,2002,22(2):143～148(in Chinese)
[6]Peter W C,et al.Experimental and analytical studies ofshape memory alloy damper for structural control[A].Proceedings of SPIE 2445[C],1995,241～251
[7]Dolce,Mauro,Cardone,Donatello,Marnetto,Roberto.Implementation and testing of passive control devicesbased on shape memory alloys[J].EarthquakeEngineering and Structural Dynamics,2000,29(7):2000:945～968
[8]Robert C K,et al.Structural damping with shapememory alloys:one-class devices[A].Proceedings ofSPIE 2445[C],1995,225～240
[9]Masuda A,Noori M.Optimization of hystereticcharacteristics of damping devices based on pseudoelasticshape memory alloy[J].International Journal of Non-linear Mechanics,2002,37(8):1375～1386
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