同时附加位移和速度相关型阻尼的钢框架结构设计方法研究
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摘要
在地震作用下,多高层钢框架结构主要发生剪切型变形,下部楼层相对位移较大,故应在下部楼层附加位移相关型阻尼器(如金属阻尼器)。下部楼层附加金属阻尼器后对结构进行地震反应时程分析,可知上部楼层的层间速度明显大于下部楼层,因而可以在上部楼层附加速度相关型阻尼器(如黏滞阻尼器),如此就得到同时附加位移和速度相关型阻尼的钢框架消能减震结构。本文通过数值分析首先阐明同时附加位移和速度相关型阻尼的设计思想以后,介绍了基于等效线性化理论和减震性能曲线的消能结构设计方法,并利用此方法研究了结构同时附加金属阻尼器和黏滞阻尼器的消能减震结构设计方法。结果表明,该结构减震效果比仅附加金属或仅附加黏滞阻尼结构的减震效果要好。
Multistory and high-rise steel frame structures always appear shear deformation under earthquake action.The relative displacement of lower floors is lager than upper floors.So the displacement-related damper(such as metal dampers) can be added to lower floors.The structure with which the lower floors have added displacement-related dampers is analyzed by time history analysis of earthquake response.It shows that the relative velocity of upper floors is obviously lager than the lower floors.So the velocity-related damper(such as viscous dampers) can be added to upper floors.According to this idea,the structure with displacement-related dampers and velocity-related dampers can be got.Firstly,the idea is introduced after numerical analysis of structure.Secondly,based on the equivalent linearization theory and vibration-absorption performance curve,the design method of energy dissipation structures is proposed.Thirdly,the design method was used to research the structure with displacement-related dampers and velocity-related dampers.Results show that the damping effect of the structure with metal dampers and viscous dampers is better than the structure only with metal dampers or only with viscous dampers.
Multistory and high-rise steel frame structures always appear shear deformation under earthquake action.The relative displacement of lower floors is lager than upper floors.So the displacement-related damper(such as metal dampers) can be added to lower floors.The structure with which the lower floors have added displacement-related dampers is analyzed by time history analysis of earthquake response.It shows that the relative velocity of upper floors is obviously lager than the lower floors.So the velocity-related damper(such as viscous dampers) can be added to upper floors.According to this idea,the structure with displacement-related dampers and velocity-related dampers can be got.Firstly,the idea is introduced after numerical analysis of structure.Secondly,based on the equivalent linearization theory and vibration-absorption performance curve,the design method of energy dissipation structures is proposed.Thirdly,the design method was used to research the structure with displacement-related dampers and velocity-related dampers.Results show that the damping effect of the structure with metal dampers and viscous dampers is better than the structure only with metal dampers or only with viscous dampers.
引文
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[7]Kasai K,Fu Y M,Watanabe A.Passive Control System for Seismic Damage Mitigation[J].Journal of StructuralEngineering,ASCE,1998,124(5):501～512
[8]Fu Y,Kasai K.Comparative Study of Frames Using Supplemental Viscoelastic and Viscous Dampers[J].Journal of Structural Engineering,ASCE,1998,122(10):513～522
[9]笠井和彦.シンポジウム主旨及び制振性能に関する私見[A].2000東京工業大学パッシプ制振構造シンポジウム論文集,2000,3:61～76
[10]日本隔振构造协会.被动减震结构设计施工手册[M].北京:中国建筑工业出版社,2008 Japanese Isolated Construction Association.Design and Construction Manual of Passive Damping Structural[M].Beijing:China Architecture Building Press,2008(in Chinese)
[2]裴星洙,方鹏凯.设置软钢阻尼器的钢框架消能减震性能研究[J].江苏科技大学学报(自然科学版),2009,23(1):13～17 Pei Xing-zhu,Fang Peng-kai.Study on Passive Energy Dissipation Performance of Steel Frame with Mild Steel Damper[J].Journal of Jiangsu University of Science and Technology(Natural Sciencee Edition),2009,23(1):13～17(in Chinese)
[3]裴星洙,贺方倩.高层消能减震钢框架结构最佳阻尼量分析[J].土木工程学报,2010,42(S):282～288 Pei Xing-zhu,He Fang-qian.Analysis on the Optimal Damping Amount of the High-rise Steel Frame Structure of Energy Dissipation[J].China Civil Engineering Journal,2010,42(s):282～288(in Chinese)
[4]笠井和彦,渡辺暑.制振構造の性能.日本建築学会大会パネルディスカッション資料「耐震設計における性能評価-耐震.免震.制(震)振構造の比較」,1997,9:19～37
[5]日本建築構造技術者協会.履歴ダンパー付け建物の構造概要に関する実態調査報告書[M].平成15年
[6]裴星洙,王维,王星星.基于能量原理的隔震结构地震响应预测法研究[J].工程力学,2011,28(7):65～72 Pei Xing-zhu,Wang Wei,Wang Xing-xing.Earthquake Response Prediction of Isolated Structures Based on Energy Principle[J].Engineering Mechanics,2011,28(7):62～75(in Chinese)
[7]Kasai K,Fu Y M,Watanabe A.Passive Control System for Seismic Damage Mitigation[J].Journal of StructuralEngineering,ASCE,1998,124(5):501～512
[8]Fu Y,Kasai K.Comparative Study of Frames Using Supplemental Viscoelastic and Viscous Dampers[J].Journal of Structural Engineering,ASCE,1998,122(10):513～522
[9]笠井和彦.シンポジウム主旨及び制振性能に関する私見[A].2000東京工業大学パッシプ制振構造シンポジウム論文集,2000,3:61～76
[10]日本隔振构造协会.被动减震结构设计施工手册[M].北京:中国建筑工业出版社,2008 Japanese Isolated Construction Association.Design and Construction Manual of Passive Damping Structural[M].Beijing:China Architecture Building Press,2008(in Chinese)
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