基于正交设计的粘弹性阻尼器参数优化
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摘要
粘弹性阻尼器耗能能力受其剪切储存模量、剪切损失模量、剪切面积、粘弹性层厚度等多种参数的影响。为了探讨耗能器的减震控制效果,将现代振动控制理论和正交设计相结合,以结构顶层各点的最大位移和最大加速度为评价指标,在不同的参数水平下对某5层框架结构进行动态仿真,并给出各种参数对结构振动控制的贡献。计算结果表明,粘弹性阻尼器可以有效地控制框架结构的地震响应,选择合适的材料参数,位移峰值衰减可高达90.8%,加速度峰值衰减可高达63.8%。
The energy storage capacity of viscoelastic dampers is influenced by shear modulus,shear loss modulus,shear area viscoelastic layer thickness and other parameters.In the paper the modern vibration control theory and the orthogonal design are applied togather to investigate the effect of the damping control,the maximum displacement and acceleration of the roof points of the struclures are adopted as evaluation indices,the dynamical respsonses of a five-story frame structure in the level of different parameters are simulated,and the contribution of various parameters is obtained for the structural vibration control.The results show that the viscoelastic dampers can effectively control the earthquake response of the frame structure.Its displacement peak can be attenuated about 90.8%,peak acceleration can be attenuated about 63.8% when the suitable material parameters are selected.
The energy storage capacity of viscoelastic dampers is influenced by shear modulus,shear loss modulus,shear area viscoelastic layer thickness and other parameters.In the paper the modern vibration control theory and the orthogonal design are applied togather to investigate the effect of the damping control,the maximum displacement and acceleration of the roof points of the struclures are adopted as evaluation indices,the dynamical respsonses of a five-story frame structure in the level of different parameters are simulated,and the contribution of various parameters is obtained for the structural vibration control.The results show that the viscoelastic dampers can effectively control the earthquake response of the frame structure.Its displacement peak can be attenuated about 90.8%,peak acceleration can be attenuated about 63.8% when the suitable material parameters are selected.
引文
[1]黄铭枫,唐家祥.高层建筑粘弹性阻尼器的优化设置[J].华中科技大学学报,2001,29(11):73-75.
[2]徐赵东,刘军生,赵鸿铁,等.粘弹性阻尼结构的优化设计[J].西安建筑科技大学学报,2000,32(4):321-324.
[3]凌和海,薛素铎,庄鹏.减震结构中的粘弹性阻尼器参数优化[J].世界地震工程,2005,21(3):126-130.
[4]魏文晖,瞿伟廉,陈朝晖.粘弹性阻尼器对建筑结构非线性地震反映的控制[J].世界地震工程,1999,19(4):95-101.
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[6]杨荣,王肇民.粘弹性阻尼器控制高层建筑地震响应的研究[J].同济大学学报,1998,26(6):613-616.
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[10]常业军,苏毅,程文.某工业建筑采用黏弹性消能支撑的减震设计研究[J].土木工程学报,2006,39(1):33-37.
[11]方开泰,马长兴.正交与均匀试验设计[M].北京:科学出版社,2001.
[12]郝文化.ANSYS土木工程应用实例[M].北京:中国水利水电出版社,2005.
[2]徐赵东,刘军生,赵鸿铁,等.粘弹性阻尼结构的优化设计[J].西安建筑科技大学学报,2000,32(4):321-324.
[3]凌和海,薛素铎,庄鹏.减震结构中的粘弹性阻尼器参数优化[J].世界地震工程,2005,21(3):126-130.
[4]魏文晖,瞿伟廉,陈朝晖.粘弹性阻尼器对建筑结构非线性地震反映的控制[J].世界地震工程,1999,19(4):95-101.
[5]张琴,曹立勇,楼文娟.基于LQR的粘弹性阻尼器参数优化方法[J].振动与冲击,2005,24(2):62-65.
[6]杨荣,王肇民.粘弹性阻尼器控制高层建筑地震响应的研究[J].同济大学学报,1998,26(6):613-616.
[7]董平,译.结构工程中的被动耗能系统[M].北京:科学出版社,2005.
[8]欧进萍,著.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.
[9]周云,徐赵东,赵鸿铁,等.粘弹性阻尼结构的性能、分析方法及工程应用[J].地震工程与工程振动,1998,18(3):96-107.
[10]常业军,苏毅,程文.某工业建筑采用黏弹性消能支撑的减震设计研究[J].土木工程学报,2006,39(1):33-37.
[11]方开泰,马长兴.正交与均匀试验设计[M].北京:科学出版社,2001.
[12]郝文化.ANSYS土木工程应用实例[M].北京:中国水利水电出版社,2005.
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