MR-TMD减振系统对连续箱梁桥振动控制研究
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摘要
MR-TMD阻尼器是在调谐质量阻尼器(TMD)的基础上与磁流变阻尼器(MR)联合使用的一种新型结构半主动振动控制装置。在考虑轨道不平顺的影响下,建立了列车-桥-阻尼器耦合动力学模型。采用自主研发的高速铁路车-桥-轨动力耦合仿真分析平台(TDBCA1.0),以德国ICE3高速列车通过(80+128+80)米连续箱梁桥为例,分析了轨道不平顺对桥梁振动的影响,比较了TMD阻尼器和MR-TMD阻尼器的减振效果。结果表明,轨道不平顺对桥梁竖向位移影响较小,对桥梁振动加速度影响较大,列车速度越快,对桥梁振动加速度的影响越大。MR-TMD阻尼器对连续箱梁位移峰值影响较小,但能在很大程度上控制振动加速度。MR-TMD减振效果优于TMD阻尼器。
MR-TMD is a new type of semi-active control device combining a tuned mass damper(TMD) and a magneto-rheological(MR) damper.Here,a dynamic model for a train-bridge-damper coupled vibration system was established considering track irregularities.Based on the self-developed computational software TDBCA1.0 for coupled vibration of a rail vehicle-bridge-track system,taking an example of German ICE3 high-speed railway train passing a(80+128+80)-meter continuous box girder bridge,the relations between the bridge vibration and track irregularities were investigated.Effects of vibration control with TMD and MR-TMD on the bridge were also analyzed.The results showed that the effect of track irregularities on vertical displacement of the bridge is small and that on vibration acceleration is large;the higher the train speed,the larger the track irregularities effect on the vibration acceleration of the bridge;the maximum displacement of the bridge is influenced little with MR-TMD,but its vibration acceleration is effected obviously,and MR-TMD is more effective than TMD in reducing the vibration of the bridge.
MR-TMD is a new type of semi-active control device combining a tuned mass damper(TMD) and a magneto-rheological(MR) damper.Here,a dynamic model for a train-bridge-damper coupled vibration system was established considering track irregularities.Based on the self-developed computational software TDBCA1.0 for coupled vibration of a rail vehicle-bridge-track system,taking an example of German ICE3 high-speed railway train passing a(80+128+80)-meter continuous box girder bridge,the relations between the bridge vibration and track irregularities were investigated.Effects of vibration control with TMD and MR-TMD on the bridge were also analyzed.The results showed that the effect of track irregularities on vertical displacement of the bridge is small and that on vibration acceleration is large;the higher the train speed,the larger the track irregularities effect on the vibration acceleration of the bridge;the maximum displacement of the bridge is influenced little with MR-TMD,but its vibration acceleration is effected obviously,and MR-TMD is more effective than TMD in reducing the vibration of the bridge.
引文
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[14]隋莉莉,王刚,龙旭.MR-TMD结构阻尼振动系统的参数影响分析[J].深圳大学学报理工版,2006,23(4):291-295.
[2]Shi X M,Cai C S.Suppression of vehicle-induced bridgevibration using tuned mass damper[J].Journal of Vibrationand Control,2008,14(7):1037-1054.
[3]Chen S D,Wu J.Performance enhancement of bridgeinfrastructure systems:Long-span bridge,moving trucks andwind with tuned mass dampers[J].Engineering structures,2008,30:3316-3324.
[4]Lin C C,Wang J F,Chen B L.Train-induced vibrationcontrol of high-speed railway bridges equipped with multipletuned mass dampers[J],Journal of Bridge Engineering,2005,10(4):398-414.
[5]Jo B W,Tae G H,Lee D W.Structural vibration of tunedmass damper-installed three-span steel box bridge[J].International Journal of Pressure Vessels and Piping,2001,78:667-675.
[6]Jiang Z S,Richard C.Experimental Verification of an MRDamper Controlled Highway Bridge[C].19th Analysis andComputation Specialty Conference.United States:AmericanSociety of Civil Engineers,2010.347-358.
[7]翟婉明.车辆-轨道耦合动力学(第三版)[M].北京:科学出版社,2007.
[8]夏禾,张楠.车辆与结构动力相互作用(第二版)[M].北京:科学出版社,2005.
[9]Weber F,Boston C,Maslanka M.An adaptive tuned massdamper based on the emulation of positive and negativestiffness with an MR damper[J].Smart Materials andStructures,2011,20:1-11.
[10]周云,谭平.磁流变阻尼控制理论与技术[M].北京:科学出版社,2007.
[11]孙洪鑫,王修勇,陈政清,等.磁流变式调谐液柱阻尼器对地震作用的控制研究[J].中国公路学报,2010,23(1):58-65.
[12]瞿伟廉,闰淼,涂建伟.新型足尺磁流变液阻尼器的设计及仿真分析[J].武汉理工大学学报,2007,29(2):87-89,103.
[13]苏木标,李建中,邹振祝.铁路简支梁桥竖向振动影响因素的分析[J].工程力学,2003,20(4):60-66.
[14]隋莉莉,王刚,龙旭.MR-TMD结构阻尼振动系统的参数影响分析[J].深圳大学学报理工版,2006,23(4):291-295.
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