基于磁流变阻尼器的隔震高架桥Skyhook控制
|
摘要
为进一步提高隔震高架桥的抗震性能,避免在强震下隔震支座位移过大,可以将附加减震措施与隔震支座配合使用,组成混合隔震系统。基于位移控制目标,研究了简化的两自由度高架桥线性模型分别在最优被动控制、LQR主动控制、LQR-Clipped磁流变(MR)阻尼器半主动控制及MR阻尼器Skyhook控制下的地震响应。研究结果表明,基于Skyhook控制的MR阻尼器控制效果可以达到LQR-Clipped控制的效果,相对最优被动控制也体现出一定的优越性。并且Skyhook控制系统简单,具有较强的实用价值。
To further enhance the seismic performance of isolated elevated highway bridge and avoid the excessive displacement of bearings,supplemental vibration control device may be added to work with isolation bearings and form the hybrid control system.Based on the control of displacement objective,the seismic responses of the simplified linear two-degrees-of-freedom bridge model under different control strategies were investigated namely,optimal passive control,LQR active control,LQR-clipped MR semi-active control as well as Skyhook MR control.The numerical simulation results show that Skyhook control strategy can get good control performance close to that of LQR-clipped control,and Skyhook control also works considerably better than optimal passive control.Moreover,Skyhook control system is simpler and has better practical utility.
To further enhance the seismic performance of isolated elevated highway bridge and avoid the excessive displacement of bearings,supplemental vibration control device may be added to work with isolation bearings and form the hybrid control system.Based on the control of displacement objective,the seismic responses of the simplified linear two-degrees-of-freedom bridge model under different control strategies were investigated namely,optimal passive control,LQR active control,LQR-clipped MR semi-active control as well as Skyhook MR control.The numerical simulation results show that Skyhook control strategy can get good control performance close to that of LQR-clipped control,and Skyhook control also works considerably better than optimal passive control.Moreover,Skyhook control system is simpler and has better practical utility.
引文
[1]李忠献,岳福青,周莉.城市隔震高架桥梁地震反应的半主动控制[J].土木工程学报,2007,40(1):42-48.
[2]李忠献,岳福青.城市桥梁地震碰撞反应研究与发展[J].地震工程与工程振动,2005,25(4):91-98.
[3]Hwang J S,Tseng Y S.Design formulations for supplementalviscous dampers to highway bridges[J].EarthquakeEngineering and Structural Dynamics,2005,34:1627-1642.
[4]Spencer B F,Dyke S J,Sain M K,et al.Phenomenologicalmodel of a magnetorheological damper[J].ASCE Journal ofEngineering Mechanics,1997,3:230-238.
[5]王修勇,陈政清,何旭辉,等。斜拉桥拉索风雨振控制的智能阻尼技术[J].振动与冲击,2002,21(3):26-30.
[6]Chen Z Q,Wang X Y,Ko J M,et al.MR damping systemfor mitigating wind-rain induced vibration on Dongting LakeCable-Stayed Bridge[J].Wind and Structures,2004,7(5):293-304.
[7]李惠,刘敏,欧进萍.斜拉索磁流变智能阻尼控制系统分析与设计[J].中国公路学报,2005,18(4):37-41.
[8]Erkus B,Abe M,Fujino Y.Investigation of semi-activecontrol for seismic protection of elevated highway bridge[J].Engineering Structure,2002,24:281-293.
[9]Dyke S J,Spencer B F,Sain MK,et al.Modeling and controlof magnetorheological dampers for seismic response reduction[J].Smart Materials and Structures,1996,5:565-575.
[10]陈水生.高架桥梁地震响应模糊半主动控制[J].地震工程与工程振动,2005,25(6):165-171.
[11]Lou C H,Wu LY,Lin P Y.Displacement control of isolatedstructures with semi-active control devices[J].Journal ofStructural Control,2003,10:77-100.
[12]阎石,张海.高架桥地震反应半主动控制分析[J].地震工程与工程振动,2003,23(6):169-173.
[13]Kori J G,Jangid R S.Semiactive control of seismicallyisolated bridges[J].International Journal of StructuralStability and Dynamics,2008,8(4):547-568.
[14]Savaresi S M,Spelta C.Mixed Sky-hook and ADD:Approaching the Filtering Limits of a Semi-active Suspension[J].Journal of Dynamic Systems,Measurement,andControl,2007,129:382-392.
[2]李忠献,岳福青.城市桥梁地震碰撞反应研究与发展[J].地震工程与工程振动,2005,25(4):91-98.
[3]Hwang J S,Tseng Y S.Design formulations for supplementalviscous dampers to highway bridges[J].EarthquakeEngineering and Structural Dynamics,2005,34:1627-1642.
[4]Spencer B F,Dyke S J,Sain M K,et al.Phenomenologicalmodel of a magnetorheological damper[J].ASCE Journal ofEngineering Mechanics,1997,3:230-238.
[5]王修勇,陈政清,何旭辉,等。斜拉桥拉索风雨振控制的智能阻尼技术[J].振动与冲击,2002,21(3):26-30.
[6]Chen Z Q,Wang X Y,Ko J M,et al.MR damping systemfor mitigating wind-rain induced vibration on Dongting LakeCable-Stayed Bridge[J].Wind and Structures,2004,7(5):293-304.
[7]李惠,刘敏,欧进萍.斜拉索磁流变智能阻尼控制系统分析与设计[J].中国公路学报,2005,18(4):37-41.
[8]Erkus B,Abe M,Fujino Y.Investigation of semi-activecontrol for seismic protection of elevated highway bridge[J].Engineering Structure,2002,24:281-293.
[9]Dyke S J,Spencer B F,Sain MK,et al.Modeling and controlof magnetorheological dampers for seismic response reduction[J].Smart Materials and Structures,1996,5:565-575.
[10]陈水生.高架桥梁地震响应模糊半主动控制[J].地震工程与工程振动,2005,25(6):165-171.
[11]Lou C H,Wu LY,Lin P Y.Displacement control of isolatedstructures with semi-active control devices[J].Journal ofStructural Control,2003,10:77-100.
[12]阎石,张海.高架桥地震反应半主动控制分析[J].地震工程与工程振动,2003,23(6):169-173.
[13]Kori J G,Jangid R S.Semiactive control of seismicallyisolated bridges[J].International Journal of StructuralStability and Dynamics,2008,8(4):547-568.
[14]Savaresi S M,Spelta C.Mixed Sky-hook and ADD:Approaching the Filtering Limits of a Semi-active Suspension[J].Journal of Dynamic Systems,Measurement,andControl,2007,129:382-392.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心