高阻尼橡胶耗能性能研究
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摘要
采用液压伺服作动器、自动数据采集仪和自制剪力架对高阻尼橡胶试件进行了纯剪切试验,分析了高阻尼橡胶特征参数与激励频率、剪应变幅值、粘弹性层厚度、剪切面形状的关系,认为对高阻尼橡胶阻尼器的等价刚度和等价阻尼比计算式中应考虑激励频率和剪应变的影响。运用地震动力分析程序计算了其应用在桥梁上的减震效果,结果表明:高阻尼橡胶的应用可以使桥梁的减震效果提高30%以上。
Hydraulic actuator,data acquisition instrument and self-made shear frame are adopted to do the shear test of high damping rubber.Through the test,the paper studies the influence of frequency,shearing section shape,strain magnitude and material's thickness on the characteristic parameters(dynamic shear elastic module、dissipation engineering module) of high damping rubber((HDR).)Frequency and strain magnitude should be considered when calculating the equivalent stiffness and equivalent damping ratio of HDR Damper.The paper also analyses the energy dissipation performance of HDR on a working bridge through an earthquake dynamic analyzing program,which indicates that the application of HDR can improve the isolation effect by 30%.
Hydraulic actuator,data acquisition instrument and self-made shear frame are adopted to do the shear test of high damping rubber.Through the test,the paper studies the influence of frequency,shearing section shape,strain magnitude and material's thickness on the characteristic parameters(dynamic shear elastic module、dissipation engineering module) of high damping rubber((HDR).)Frequency and strain magnitude should be considered when calculating the equivalent stiffness and equivalent damping ratio of HDR Damper.The paper also analyses the energy dissipation performance of HDR on a working bridge through an earthquake dynamic analyzing program,which indicates that the application of HDR can improve the isolation effect by 30%.
引文
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[6]徐赵东.(铅)粘弹性阻尼结构的试验与研究[D].西安建筑科技大学博士论文,2001.
[7]范立础,王志强.桥梁减隔震设计[M].北京.人民交通出版社,2001.
[8]薛晓锋.功能分离式减震支座的开发研究[D].长安大学硕士论文,2003.
[2]丰定国,王清敏,苏三庆.工程结构抗震[M].北京:地震出版社,1994.
[3]伊津野和行,田文雄,中村一平.机能分离型支承装置の动特性と设计手法に关すゐ研究[C].日本土木学会,2000.
[4]户原春彦,著.牟传文,译.防震橡胶及其应用[M].北京:中国铁道出版社,1982.
[5]周云,徐赵东,邓雪松.粘弹性阻尼器的性能实验研究[J].振动与冲击,2001,20(3):71-75.
[6]徐赵东.(铅)粘弹性阻尼结构的试验与研究[D].西安建筑科技大学博士论文,2001.
[7]范立础,王志强.桥梁减隔震设计[M].北京.人民交通出版社,2001.
[8]薛晓锋.功能分离式减震支座的开发研究[D].长安大学硕士论文,2003.
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