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基于MRD与LRB混合控制的隔震连续梁桥地震响应

Keywords: 隔震连续梁桥,磁流变阻尼器,铅芯橡胶支座,振动控制,混合控制,地震响应

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Abstract:

为了研究磁流变阻尼器(MRD)与铅芯橡胶支座(LRB)混合控制对桥梁结构地震响应及隔震效果的影响,以典型三跨连续梁桥为背景,采用平行板模型模拟MRD的本构关系,采用Bouc-Wen模型模拟LRB的力-位移非线性行为,通过对结构的离散建立无控制、LRB单独控制、MRD与LRB混合控制的多种控制工况有限元计算模型,运用有限单元方法建立系统的动力特性矩阵,并采用瞬时最优控制算法对其进行了非线性时程对比分析.分析结果表明:采用MRD与LRB混合控制工况与LRB单独控制工况相比,前者的结构地震响应明显降低,隔震效果得到明显提高;在桥墩、桥台处均安装MRD与仅在桥墩或桥台处安装MRD的LRB隔震桥梁相比,前者对结构地震响应的控制效果更好.

References

[1]  重庆交通科研设计院.JTG/T B02-01—2008公路桥梁抗震设计细则[S].北京:人民交通出版社,2008.
[2]  WEN Y K.Method of random vibration of hystereticsystems[J].Journal of Engineering Mechanics Division,1976,102(2):249-263.
[3]  周云,徐龙河,李忠献.磁流体阻尼器半主动控制结构的地震反应分析[J].土木工程学报,2001,34(5):10-14.ZHOU Yun,XU Long-he,LI Zhong-xian.Seismicresponses of semi-control using magneto rheological fluiddampers[J].China Civil Engineering Journal,2001,34(5):10-14.(in Chinese)
[4]  杜修力,韩强,刘文光.考虑双向耦合非线性的LRB隔震桥梁地震反应分析[J].工程力学,2008,25(3):119-125.DU Xiu-li,HAN Qiang,LIU Wen-guang.Nonlinearseismic responses of isolated bridge of LRB with bi-directional coupled model[J].Engineering Mechanics,2008,25(3),119-125.(in Chinese)
[5]  张骏,阎贵平.减隔震支座对梁式桥抗震性能的影响[J].中国公路学报,2002,15(1):38-43.ZHANG Jun,YAN Gui-ping.Effects of isolation bearingon anti-seismic performance of RC beam bridge[J].China Journal of Highway and Transport,2002,15(1):38-43.(in Chinese)
[6]  马涌泉,陈水生.基于自振与频谱特性影响的LRB连续梁桥隔震效果研究[J].武汉理工大学学报,2011,33(7):101-106.MA Yong-quan,CHEN Shui-sheng.Research on isolatedeffect of continuous girder bridges with LRB based oninfluenced by self-vibration characteristic and spectrumcharacteristic[J].Journal of Wuhan University ofTechnology,2011,33(7):101-106.(in Chinese)
[7]  SPENCER B F,DYKE S J,SAIN M K.Phenomenalogical model for magnet or ecological dampers[J].Journal of Engineering Mechanics,1997,123(3):230-238.
[8]  汪志昊,陈政清.基于磁流变阻尼器的隔震高架桥Skyhook控制[J].振动与冲击,2010,29(12):196-199.WANG Zhi-hao,CHEN Zheng-qing.Skyhook control ofisolated elevated highway bridge based on magnetorheological(MR)damper[J].Journal of Vibration andShock,2010,29(12):196-199.(in Chinese)
[9]  张延年,刘斌,李艺,等.MRD与LRB相混合的结构振动控制[J].东北大学学报:自然科学版,2006,27(1):95-98.ZHANG Yan-nian,LIU Bin,LI Yi,et al.Hybrid controlof MRD and LRB for structural vibration[J].Journal ofNortheastern University:Natural Science,2006,27(1):95-98.(in Chinese)
[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):165-170.CHEN Shui-sheng.Semi-active control based on fuzzytheory of seismic response for elevated highway bridges[J].Earthquake Engineering and Engineering Vibration,2005,25(6):165-170.(in Chinese)
[11]  GAVIN H P,HANSON R D,FILISKO F E.Electrorheological dampers,PartⅠ:analysis and design[J].Journal of Applied Mechanics,1996,63(3):669-675.

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