简支梁桥减震半主动控制算法研究
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摘要
总结了6种半主动控制算法,采用黏滞阻尼器,对一座三跨简支梁桥进行了不同地震动输入下的半主动控制地震反应计算分析,比较分析了不同地震动输入和半主动控制算法对简支梁桥地震反应控制效果的影响。结果表明,半主动控制能有效地减小桥梁结构的大部分地震反应,同时可能会放大另外部分地震反应,这与地震动输入密切相关,不同地震动输入下的控制效果各不相同。所提六种半主动控制算法中,算法2、5、6对该简支梁桥地震反应的减震效果相对最好,这与各种算法的阻尼器耗能大小有关。
Six semi-active control algorithms are summarized.The semi-active control analysis of seismic responses for a three-span simply supported beam bridge is performed with viscous dampers under different ground motion inputs.Influences of different ground motion inputs and semi-active control algorithms on control effect of seismic response are compared for simply supported beam bridge.The results indicate that the semi-active control can make most seismic responses of the bridge less,but can perhaps make some other seismic responses larger.This is due to the ground motion input,and the control effectiveness is different under different ground motion inputs.In the six semi-active control algorithms presented,vibration suppressing effectiveness of No.2,No.5 and No.6 control algorithms is the best,which is due to the energy consuming of each control algorithm.
Six semi-active control algorithms are summarized.The semi-active control analysis of seismic responses for a three-span simply supported beam bridge is performed with viscous dampers under different ground motion inputs.Influences of different ground motion inputs and semi-active control algorithms on control effect of seismic response are compared for simply supported beam bridge.The results indicate that the semi-active control can make most seismic responses of the bridge less,but can perhaps make some other seismic responses larger.This is due to the ground motion input,and the control effectiveness is different under different ground motion inputs.In the six semi-active control algorithms presented,vibration suppressing effectiveness of No.2,No.5 and No.6 control algorithms is the best,which is due to the energy consuming of each control algorithm.
引文
[1]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.
[2]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
[3]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[4]隋莉莉,欧进萍.MR减振驱动器用于结构振动控制的算法研究[J].应用力学学报,2002,19(3):144-148.
[5]张春巍,欧进萍.结构磁流变阻尼半主动控制的改进算法与仿真分析[J].世界地震工程,2003,19(1):37-43.
[6]隋莉莉,王刚,欧进萍.基于加速度反馈的结构地震反应半主动MR阻尼控制试验[J].地震工程与工程振动,2002,22(6):89-95.
[7]朱东生,王梅.简支梁桥横向地震力计算方法及模型研究[J].兰州铁道学院学报,1999,18(2):27-33.
[8]郑史雄,奚绍中.简支梁桥的地震反应性能[J].西南交通大学学报,1998,33(2):132-137.
[9]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.
[2]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
[3]胡聿贤.地震工程学[M].北京:地震出版社,1988.
[4]隋莉莉,欧进萍.MR减振驱动器用于结构振动控制的算法研究[J].应用力学学报,2002,19(3):144-148.
[5]张春巍,欧进萍.结构磁流变阻尼半主动控制的改进算法与仿真分析[J].世界地震工程,2003,19(1):37-43.
[6]隋莉莉,王刚,欧进萍.基于加速度反馈的结构地震反应半主动MR阻尼控制试验[J].地震工程与工程振动,2002,22(6):89-95.
[7]朱东生,王梅.简支梁桥横向地震力计算方法及模型研究[J].兰州铁道学院学报,1999,18(2):27-33.
[8]郑史雄,奚绍中.简支梁桥的地震反应性能[J].西南交通大学学报,1998,33(2):132-137.
[9]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.
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