一种新型阻尼器的开发与研究
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摘要
桥梁横向振幅超限一直是困扰铁路桥梁的一个重要问题。在全国铁路全面提速的大环境下,这个问题益发突出,列车速度的提高势必造成更大的桥梁横向位移,进而给行车安全造成不利的影响。传统的桥梁横向振动控制方法主要是通过改变桥梁自身刚度,达到减小桥梁振动响应的目的,但成本较高,经济性较差。耗能减振思想的提出为桥梁横向振动控制提供了一种新的思路,即用阻尼器加固桥梁。阻尼器的安装能够将输入桥梁的能量转化为阻尼器的滞回能,通过阻尼器的往复加卸载循环,先于结构消耗部分输入能量。这种方法的优势在于经济节省,易于更换,但目前国内尚缺乏该类型阻尼器产品及相关的应用研究。本文对铅橡胶阻尼器的结构及力学性能进行了阐述,提出该型式阻尼器能够适用于铁路横向小位移振动条件下的能量消耗。
It is always a troubling problem that railway bridges go beyond their lateral vibration limits.This problem appears even more significant in the case of national railway network speed lift because the raising speed of train increases the effect of lateral vibration which will lead to serious potential danger,derailment,for example.The generally traditional vibration control methods is concentrate on the enhancement of lateral stiffness of bridge to reduce the structural vibration response of bridges,which need considerable investment.The thoughts of energy dissipation indicates an alternative way of vibration control-reducing the lateral displacement by installing damping device.Damping device which connected properly to the bridge can dissipate the energy input before the deformation of the structure and reduces the response of structure itself.This method is economical and easy to replace damping devices though there is no much research in this field.The new typle of damper is developed in this paper.
It is always a troubling problem that railway bridges go beyond their lateral vibration limits.This problem appears even more significant in the case of national railway network speed lift because the raising speed of train increases the effect of lateral vibration which will lead to serious potential danger,derailment,for example.The generally traditional vibration control methods is concentrate on the enhancement of lateral stiffness of bridge to reduce the structural vibration response of bridges,which need considerable investment.The thoughts of energy dissipation indicates an alternative way of vibration control-reducing the lateral displacement by installing damping device.Damping device which connected properly to the bridge can dissipate the energy input before the deformation of the structure and reduces the response of structure itself.This method is economical and easy to replace damping devices though there is no much research in this field.The new typle of damper is developed in this paper.
引文
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[2]周云.粘滞阻尼减振结构设计[M].武汉:武汉理工大学出版社,2006 Zhou Yun.Vibration Reduction Design of Structure with Viscous Damper Energy Dissipation[M].Wuhan:Wuhan Univercity of Technology Press,2006(in Chinese)
[3]周云.摩擦耗能减振结构设计[M].武汉:武汉理工大学出版社,2006 Zhou Yun.Vibration Reduction Design of Structure with Friction Energy Dissipation[M].Wuhan:Wuhan Univercity of Technology Press,2006(in Chinese)
[4]周云.金属耗能减振结构设计[M].武汉:武汉理工大学出版社,2006 Zhou Yun.Vibration Reduction Design of Structure with Metal Energy Dissipation[M].Wuhan:Wuhan Univercity of Technology Press,2006(in Chinese)
[5]周云.粘弹性阻尼减振结构设计[M].武汉:武汉理工大学出版社,2006 Zhou Yun.Vibration Reduction Design of Structure with Viscoelastic Damper Energy Dissipation[M].Wuhan:Wuhan Univercity of Technology Press,2006(in Chinese)
[6]Soong T T,Dargush G F.Passive Energy Dissipation Systems in Structural Engineering[M](董平译).北京:科学出版社,2005
[7]冼巧玲,周福霖.铅-橡胶阻尼器的试验研究[J].地震工程与工程振动,2001,21(4)Xian Qiao-ling,Zhou Fu-lin.Study of the Lead-rubber Dampers[J].Journal of Earthquake Engineering and Engineering Vibration,2001,21(4)(in Chinese)
[8]周云,徐赵东,邓雪松,李良.组合式铅橡胶复合阻尼器的性能试验研究[J].世界地震工程,2006,16(2)Zhou Yun,Xu Zhao-dong,Deng Xue-song,Li Liang.Experimental Study on Properties of Combined Lead Rubber Dampers[J].World Information on Earthquake Engineering,2006,16(2)(in Chinese)
[9]刘季,周云.结构抗震控制研究与应用状况(上):基础隔震、耗能减振及吸振减振[J].哈尔滨建筑大学学报,1995,28(4)Liu Ji,Zhou Yun.State-of-the-art and Practice in Earthquake Response Control of Structures[J].Journal of Harbin University of Civil Enineering and Architecture,1995,28(4)(in Chinese)
[10]周云,徐彤.耗能减振技术研究与应用的新进展[J].地震上程与工程振动,1999,19(2)Zhou Yun,Xu Tong.State-of-the-art of Research and Application on Seismic Energy Dissipation[J].Journal of Earthquake Engineering and Engineering Vibration,1999,19(2)(in Chinese)
[11]周云.徐赵东.赵鸿铁.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)Zhou Yun,Xu Zhao-dong,Zhao Hong-tie.Study on Behavior,Analytical Methods and Application of Viscoelastic Structure[J].Journal of Earthquake Engineering and Engineering Vibration,1998,18(3)(in Chinese)
[12]周云.刘季.新型耗能阻尼器的研究与开发[J].地震工程与工程振动,1998,18(1)Zhou Yun,Liu Ji.Development and Study of New Energy Dissipaters(Dampers)[J].Journal of Earthquake Engineering and Engineering Vibation,1998,18(1)(in Chinese)
[13]李松瑞.铅及铅合金[M].长沙:中南大学出版社,1996 Li Song-rui.Lead and Lead Alloys[M].Changsha:Central South University of Technology Press,1996(in Chinese)
[14]卜炎.螺纹联接设计与计算[M].北京:高等教育出版社,1995,7 Pu Yan.Design and Calculation of Thread Connection[M].Beijing:Higher Education Press,1995(in Chinese)
[15]赵风华.黄金林.钢结构设计原理[M].北京:高等教育出版社,2005 Zhao Feng-hua,Huang Jin-lin.The Designing Principle of Steel Structure[M].Beijing:Higher Education Press,2005(in Chinese)
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