基于线性化等效方法的消能减震结构有效附加阻尼比计算
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摘要
通过线性化等效原理,将消能减震结构中的消能部件等效为框架柱,将非线性分析转化为线性分析,得到消能部件附加给结构的有效阻尼比。对工程实例进行了线性化等效分析和非线性对比分析。研究结果表明:线性化等效分析方法可以准确地得出消能部件附加给结构的有效阻尼比,无论是层间位移角还是层剪力,两种分析方法得出的结果都符合较好,通过"附加有效阻尼比"修正的结构的线性分析与含有消能减震部件的非线性分析得出的结果一致。
According to the linear equivalence principle,the energy dissipation component in the energy dissipation structure was equivalent to the frame column to transform the nonlinear analysis to linear analysis and calculate the effective damping ratio provided by the energy dissipation component.Finally,based on a real engineering example,linear equivalence analysis and nonlinear comparative analysis were carried out.Analysis results show that: the effective additional damping ratio can be obtained accurately by the linear equivalence analysis method.Comparative analysis shows that: for both the inter-story drift and the story shearing force,the two calculation results agree well with each other.The linear analysis results of structure modified by the additional effective damping ratio are consistent with the nonlinear analysis results of energy dissipation structure.
According to the linear equivalence principle,the energy dissipation component in the energy dissipation structure was equivalent to the frame column to transform the nonlinear analysis to linear analysis and calculate the effective damping ratio provided by the energy dissipation component.Finally,based on a real engineering example,linear equivalence analysis and nonlinear comparative analysis were carried out.Analysis results show that: the effective additional damping ratio can be obtained accurately by the linear equivalence analysis method.Comparative analysis shows that: for both the inter-story drift and the story shearing force,the two calculation results agree well with each other.The linear analysis results of structure modified by the additional effective damping ratio are consistent with the nonlinear analysis results of energy dissipation structure.
引文
[1]李民.附加阻尼大小对消能减振结构减振效果的影响[J].安徽建筑,2005(6):84-85.
[2]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.(GB50011—2010Codefor seismic design of buildings[S].Beijing:ChinaArchitecture&Building Press,2010.(in Chinese))
[3]贺军利,汪大绥.消能减震房屋抗震设计方法研究述评[J].世界地震工程,2005,21(4):148-156.(HE Jun-li,WANG Da-sui.A study and comment onseismic design methods of a building with seismicenergy dissipation devices[J].World EarthquakeEngineering,2005,21(4):148-156.(in Chinese))
[4]叶正强,李爱群,娄宇.粘滞流体阻尼器用于建筑结构的减震设计原理与方法[J].建筑结构,2008,38(8):87-90.(YE Zhengqiang,LI Aiqun,LOU Yu.Design principle and method of structural vibrationenergy dissipation using fluid viscous dampers[J].Building Structure,2008,38(8):87-90.(inChinese))
[5]Niwa N,Kobori T,Takahashi M,Hatada T,et al.Passive seismic response controlled high-rise buildingwith high damping device[J].Earthquake Engineeringand Structural Dynamics,1995,24(5):655-671.
[6]叶正强,李爱群,程文瀼.采用粘滞流体阻尼器的工程结构减振设计研究[J].建筑结构学报,2001,22(4):61-66.(YE Zhengqiang,LI Aiqun,CHENGWenrang.Study on vibration energy dissipation designof structure with fluid viscous dampers[J].Journal ofBuilding Structures,2001,22(4):61-66.(inChinese))
[7]FEMA 356.Prestandard and commentary for theseismic rehabilitation of buildings[S].Washington,DC:Federal Emergency Management Agency,2000.
[2]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.(GB50011—2010Codefor seismic design of buildings[S].Beijing:ChinaArchitecture&Building Press,2010.(in Chinese))
[3]贺军利,汪大绥.消能减震房屋抗震设计方法研究述评[J].世界地震工程,2005,21(4):148-156.(HE Jun-li,WANG Da-sui.A study and comment onseismic design methods of a building with seismicenergy dissipation devices[J].World EarthquakeEngineering,2005,21(4):148-156.(in Chinese))
[4]叶正强,李爱群,娄宇.粘滞流体阻尼器用于建筑结构的减震设计原理与方法[J].建筑结构,2008,38(8):87-90.(YE Zhengqiang,LI Aiqun,LOU Yu.Design principle and method of structural vibrationenergy dissipation using fluid viscous dampers[J].Building Structure,2008,38(8):87-90.(inChinese))
[5]Niwa N,Kobori T,Takahashi M,Hatada T,et al.Passive seismic response controlled high-rise buildingwith high damping device[J].Earthquake Engineeringand Structural Dynamics,1995,24(5):655-671.
[6]叶正强,李爱群,程文瀼.采用粘滞流体阻尼器的工程结构减振设计研究[J].建筑结构学报,2001,22(4):61-66.(YE Zhengqiang,LI Aiqun,CHENGWenrang.Study on vibration energy dissipation designof structure with fluid viscous dampers[J].Journal ofBuilding Structures,2001,22(4):61-66.(inChinese))
[7]FEMA 356.Prestandard and commentary for theseismic rehabilitation of buildings[S].Washington,DC:Federal Emergency Management Agency,2000.
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