SMA阻尼器偏心结构平-扭震动控制试验研究
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摘要
为了验证提出的新型筒式自复位形状记忆合金阻尼器(telescopic recentering shape memory al-loy damper,TRSMAD)对结构平动-扭转耦联振动反应的抑制作用,进行了偏心结构消能减震体系的振动台试验。设计了一个1/4缩尺的三层两跨单向偏心的钢框架模型,将提出的新型SMA阻尼器安装在结构底层的一侧,通过振动台分别对无控条件下和装有阻尼器的有控条件下的结构反应进行了研究。试验结果表明:(1)在各地震波作用下,TRSMAD对结构的平动反应有很好控制效果,而对结构各层扭转角位移的控制效果稍低;(2)不同地震波下的控制效果有所不同:对结构的平动位移而言,天津波的减震率最高,El Centro波次之,最后为Taft波;对结构扭转角的控制,平均而言,除了天津波作用下第二层为特例外,对El Centro波的减震效果最好,其次为Taft波,最后为天津波;(3)同一地震波下,阻尼器对结构模型一层的位移控制效果较其他层为优。
In order to verify the effectiveness of innovative telescopic recentering shape memory alloy damper(TRSMAD) in mitigating the translational-torsional coupled response of eccentric structures,shaking table tests on a reduced-scale eccentric steel frame model with and without TRSMAD-based energy dissipation system were performed.A 1/4-scale,3-story,2-span steel frame model of building with eccentricity was designed.One TRSMAD was eccentrically installed in the bottom story of the model.The building model with and without TRSMAD-based energy dissipation system were tested through shake table.The experimental results show that the TRSMAD can significantly reduce translational vibration and slightly mitigate the torsion response of buildings.However,the reduction ratio is different for different earthquake records.As for translational deformation,the ratio is highest under Tianjin record,medial under El Centro and lowest under Taft.As for torsion response,on average,excluding the second floor under Tianjin record,the ratio is highest under El Centro,medial under Taft and lowest under Tianjin record.Moreover,the reduction ratio of the first floor is higher than that of the second floor under the same earthquake record.
In order to verify the effectiveness of innovative telescopic recentering shape memory alloy damper(TRSMAD) in mitigating the translational-torsional coupled response of eccentric structures,shaking table tests on a reduced-scale eccentric steel frame model with and without TRSMAD-based energy dissipation system were performed.A 1/4-scale,3-story,2-span steel frame model of building with eccentricity was designed.One TRSMAD was eccentrically installed in the bottom story of the model.The building model with and without TRSMAD-based energy dissipation system were tested through shake table.The experimental results show that the TRSMAD can significantly reduce translational vibration and slightly mitigate the torsion response of buildings.However,the reduction ratio is different for different earthquake records.As for translational deformation,the ratio is highest under Tianjin record,medial under El Centro and lowest under Taft.As for torsion response,on average,excluding the second floor under Tianjin record,the ratio is highest under El Centro,medial under Taft and lowest under Tianjin record.Moreover,the reduction ratio of the first floor is higher than that of the second floor under the same earthquake record.
引文
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[14]Dolce M and Cardone D(2001),Mechanical behavior of shape memory alloys for seismic applications 2.austenite NiTi wires subjected to tension[J],Int.J.Mech.Sci.43,2657–2677.
[15]钱辉,李宏男,任文杰,等.形状记忆合金复合摩擦阻尼器设计及试验研究[J].建筑结构学报,2011,32(9):58-64.Qian Hui,Li Hongnan,Ren Wenjie,et al.Experimental investigation of an innovative hybrid shape memory alloys friction damper[J],Journalof Building Structures,2011,32(9):58-64.
[16]李宏男,钱辉,宋钢兵.一种新型SMA阻尼器的试验和数值模拟研究[J].振动工程学报,2008.21(2):179-184.Li Hongnan,Qian Hui,Song Gangbing.A type of shape memory alloy damper:design,experiment and numerical simulation[J].Journal of Vibra-tion Engineering,2008.21(2):179-184.
[17]钱辉,李宏男,宋钢兵.形状记忆合金阻尼器消能减震体系的控制研究[J].振动与冲击,2008.27(8):42-47.Qian Hui,Li Hongnan,Song Gangbing.Energy dissiptioan system of structures with shape memory alloy damper[J].Journal of Vibration andShock,,2008.27(8):42-47.
[2]霍林生.偏心结构利用调液阻尼器减震控制的研究[D].大连:大连理工大学,2005.Huo Lingsheng.Seismic response control of eccentric structures using tuned liquid dampers[D].Da lian:Dalian University of Technology,2005.
[3]Ahlawat A S,Ramaswamy A.Multiobjective optimal FLC driven hybrid mass damper system for torsionally coupled,seismicclly excited structures[J].Earthquake Engineering and Structural Dynamics,2002,31(12):2121-2139.
[4]Singh M P,Singh S,Moreschi L M.Tuned mass dampers for response control of torsional buildings[J].Earthquake Engineering and StructuralDynamics,2002,31(4):749-769.
[5]赵大海,李宏男.采用模糊逻辑的半主动摩擦阻尼器对偏心结构的振动控制[J],振动工程学报,2007,20(2):112-117.Zhao Dahai,Li Hongnan.Vibration control of irregular structure using semi-active friction dampers based on fuzzy logic[J].Journal of VibrationEngineering,2007,20(2):112-117.
[6]李宏男,阎石,林皋.智能结构控制发展综述[J].地震工程与工程振动,1999,19(2):29-36Li Hongnan,Yan Shi,Lin Gao.State-of-the-art review for intelligent structural control[J].Earthquake engineering and engineering vibra-tion,1999,19(2):29-36.
[7]欧进萍.结构振动控制—主动、半主动和智能控制[M].北京:科学出版社.2003.Ou Jinping.Structural vibration control-active,semi-active and smart control[M].Bei jing:Science Press,2003.
[8]徐祖耀.形状记忆材料[M].上海:上海交通大学出版社.2000.Xu Zuyao.Shape memory materials[M].Shan ghai:Shanghai Jiaotong University Press,2000.
[9]Dolce M,Cardone D and Marnetto R.Implementation and Testing of Passive Control Devices Based on Shape Memory Alloys[J],EarthquakeEng.Struct.Dyn..2000.29(7):945-968.
[10]李惠,毛晨曦.新型SMA耗能器及结构地震反应控制试验研究[J].地震工程与工程振动.2003.23(1):133-139.Li Hui,Mao Chenxi.Experimental investigation of earthquake response reduction of buildings with added two types of SMA passive energy dissipa-tion devices[J].Earthquake engineering and engineering vibration,2003.23(1):133-139.
[11]薛素铎,董军辉,卞晓芳等.一种新型形状记忆合金阻尼器[J].建筑结构学报.2005.26(3):45-50.Xue Suduo,Dong Junhui,Bian Xiaofang,et al.A new type of shape memory alloy damper[J].Journal of Building Structures,2005.26(3):45-50.
[12]倪立峰,李秋胜,李爱群等.新型形状记忆合金阻尼器的试验研究[J].地震工程与工程振动.2002.22(3):145-148.Ni Lifeng,Li Qiusheng,Li Qiqun,et al.Investigation and experiment of damper based on shape memory alloy(SMA)[J].Earthquake engineer-ing and engineering vibration,2002.22(3):145-148.
[13]左晓宝,李爱群,倪立峰.一种超弹性SMA复合阻尼器的设计与试验[J].东南大学学报.2004.34(4):459-463.Zuo Xiaobao,Li Aiqun,Ni Lifeng.Design and experimental investigation of superelast ic SMA damper[J],Journal of Southeast University(Natural Science Edition),2004.34(4):459-463.
[14]Dolce M and Cardone D(2001),Mechanical behavior of shape memory alloys for seismic applications 2.austenite NiTi wires subjected to tension[J],Int.J.Mech.Sci.43,2657–2677.
[15]钱辉,李宏男,任文杰,等.形状记忆合金复合摩擦阻尼器设计及试验研究[J].建筑结构学报,2011,32(9):58-64.Qian Hui,Li Hongnan,Ren Wenjie,et al.Experimental investigation of an innovative hybrid shape memory alloys friction damper[J],Journalof Building Structures,2011,32(9):58-64.
[16]李宏男,钱辉,宋钢兵.一种新型SMA阻尼器的试验和数值模拟研究[J].振动工程学报,2008.21(2):179-184.Li Hongnan,Qian Hui,Song Gangbing.A type of shape memory alloy damper:design,experiment and numerical simulation[J].Journal of Vibra-tion Engineering,2008.21(2):179-184.
[17]钱辉,李宏男,宋钢兵.形状记忆合金阻尼器消能减震体系的控制研究[J].振动与冲击,2008.27(8):42-47.Qian Hui,Li Hongnan,Song Gangbing.Energy dissiptioan system of structures with shape memory alloy damper[J].Journal of Vibration andShock,,2008.27(8):42-47.
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