附加黏滞阻尼器减震结构基于性能的抗震设计方法
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摘要
本文以位移设计方法的概念为主,结合能力谱法提出附加黏滞流体阻尼器结构基于位移的初步设计方法。首先讨论了减震结构基于性能设计方法的实现途径并加以比较;其次定量研究了使用加速度反应谱转换为位移反应谱的条件,分析指出真实位移反应谱(均值)与转换得到的位移反应谱随着场地特征周期的增大,两者之间的差值逐渐增大;在场地条件相同的情况下,阻尼比越大两者的差异也越大。最后结合我国抗震设计规范,给出了主体结构保持弹性状态时,非迭代法确定附加黏滞流体阻尼器的减震结构设计流程。非线性时程分析结果表明该设计方法实用、有效。
The displacement based design method of the structures with viscous fluid dampers was proposed.The methods for performance-based design of structures with various energy dissipation devices were compared.The transform condition from acceleration response spectrum to displacement response spectrum(DRS) was studied.It shows that the transformed DRS differ from the true DRS(mean value) with the increase of characteristic period of the site.Given the same site condition,the difference will increase as the damping ratio increases.Based on the Chinese seismic code,the non-iteration method was applied to propose the displacement-based design method of the structures with viscous fluid dampers,under the condition that the structures keep elastic.The further nonlinear time-history analysis verifies the practicality and effectiveness of the method.
The displacement based design method of the structures with viscous fluid dampers was proposed.The methods for performance-based design of structures with various energy dissipation devices were compared.The transform condition from acceleration response spectrum to displacement response spectrum(DRS) was studied.It shows that the transformed DRS differ from the true DRS(mean value) with the increase of characteristic period of the site.Given the same site condition,the difference will increase as the damping ratio increases.Based on the Chinese seismic code,the non-iteration method was applied to propose the displacement-based design method of the structures with viscous fluid dampers,under the condition that the structures keep elastic.The further nonlinear time-history analysis verifies the practicality and effectiveness of the method.
引文
[1]Lin Y Y,Tsai M H,Hwang J S,Chang K C.Direct displacement-based designfor building with passive energy dissipation systems[J],Engineering Structures,2003,25:25-37.
[2]Ki mJ K,Choi H H.Displacement-based design of supplemental dampers for seismic retrofit of a framed structure[J].Journal of Struc-tural Engineering,2006,132(61):873-883.
[3]Ki mJ K,Choi H H,Min K W.Performance-based design of added viscous dampers using capacity spectrum method[J],Journal ofEarthquake Engineering,2003,7(1):1-24.
[4]张思海,梁兴文,邓明科.被动耗能减震结构基于能力谱法的抗震设计方法研究[J].土木工程学报,2006,39(7):26-32.
[5]欧进萍,何政,吴斌,龙旭.钢筋混凝土结构的地震损伤控制设计[J].建筑结构学报,2000,21(1):63-70.
[6]Seleemah A A,Constantinou MC.Investigation of Seismic Response of Buildings with Linear and Nonlinear Fluid Viscous Dampers[R].Rep.No.NCEER-97-0004,National Center for Earthquake Engineering Research,State University of New York at Buffalo,Buffalo,N.Y.
[7]ATC40[S].Seismic Evaluation,Retrofit of Existing Concrete Buildings Redwood City(CA):Applied Technology Council,1996.
[8]翁大根,卢著辉,徐斌,周红卫,夏嬿.黏滞阻尼器力学性能试验研究[J].世界地震工程,2002,18(4).
[9]FEMA-274 Federal Emergency Management Agency.NEHRP Commentary on the Guidelines for the seismic rehabilitation of buildings[S],Washington,D.C,1997.
[2]Ki mJ K,Choi H H.Displacement-based design of supplemental dampers for seismic retrofit of a framed structure[J].Journal of Struc-tural Engineering,2006,132(61):873-883.
[3]Ki mJ K,Choi H H,Min K W.Performance-based design of added viscous dampers using capacity spectrum method[J],Journal ofEarthquake Engineering,2003,7(1):1-24.
[4]张思海,梁兴文,邓明科.被动耗能减震结构基于能力谱法的抗震设计方法研究[J].土木工程学报,2006,39(7):26-32.
[5]欧进萍,何政,吴斌,龙旭.钢筋混凝土结构的地震损伤控制设计[J].建筑结构学报,2000,21(1):63-70.
[6]Seleemah A A,Constantinou MC.Investigation of Seismic Response of Buildings with Linear and Nonlinear Fluid Viscous Dampers[R].Rep.No.NCEER-97-0004,National Center for Earthquake Engineering Research,State University of New York at Buffalo,Buffalo,N.Y.
[7]ATC40[S].Seismic Evaluation,Retrofit of Existing Concrete Buildings Redwood City(CA):Applied Technology Council,1996.
[8]翁大根,卢著辉,徐斌,周红卫,夏嬿.黏滞阻尼器力学性能试验研究[J].世界地震工程,2002,18(4).
[9]FEMA-274 Federal Emergency Management Agency.NEHRP Commentary on the Guidelines for the seismic rehabilitation of buildings[S],Washington,D.C,1997.
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