相邻建筑连接阻尼器的减振控制分析
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摘要
对15层主结构与7层次结构的两相邻框架剪力墙模型结构在三个不同位置连接黏滞流体阻尼器,输入三种振动台地震波及三种不同加速度峰值,以主结构顶层最大相对位移最小为优化目标,寻求出三种阻尼器连接位置对应的最优阻尼系数,并对两相邻结构进行地震反应分析。结果显示,当阻尼器选择合适的安放位置和合理的阻尼参数时,主、次结构的地震反应都会有一定程度的降低,从而起到较好的减震效果。
Two adjacent frame shear wall models,15-storey main structure and seven-layer sub-structure were designed.Selecting three kinds of locations for viscous damper,entering three kinds of seismic waves and acceleration peaks,it was aimed to get the optimal damping coefficient and damper parameters,with the target of minimal relative displacement at the top layer of the main structure.Besides,the seismic responses of two adjacent buildings were analysed.The results show that by selecting appropriate locations and damping parameters of dampers seismic responses of primary and auxiliary structures can be reduced to a certain extent.A better effect can be achieved in mitigating seismic responses of building structures.
Two adjacent frame shear wall models,15-storey main structure and seven-layer sub-structure were designed.Selecting three kinds of locations for viscous damper,entering three kinds of seismic waves and acceleration peaks,it was aimed to get the optimal damping coefficient and damper parameters,with the target of minimal relative displacement at the top layer of the main structure.Besides,the seismic responses of two adjacent buildings were analysed.The results show that by selecting appropriate locations and damping parameters of dampers seismic responses of primary and auxiliary structures can be reduced to a certain extent.A better effect can be achieved in mitigating seismic responses of building structures.
引文
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[2]Zhang W S,Xu Y L.Vibration analysis of twobuildings linked by Maxwell model—defined fluiddampers[J].Journal of Sound and Vibration,2000,233(5):775-796.
[3]朱宏平,翁顺,陈晓强.控制两相邻结构地震动响应的Maxwell模型流体阻尼器优化参数研究[J].应用力学学报,2006,23(2):296-300.Zhu HP,Weng S,Chen X Q.Optimum parameters ofMaxwell model-defined dampers for reducing theseismic responses of adjacent structures underearthquake[J].Chinese Journal of AppliedMechanics,2006,23(2):296-300.(in Chinese)
[4]Lu X L,Yang Z,Xu Y L.Seismic response control ofadjacent buildings linked by viscous fluid dampers[M]∥Proceedings of the 3rd international symposiumon safety science and technology:Progress in safetyscience and technology,vol.3.Science Press,2002:480-487.
[5]Yang Z,Xu Y L,Asce M,et al.Experimental seismicstudy of adjacent buildings with fluid dampers[J].Journal of Structural Engineering/February,2003:197-205.
[6]龚治国,吕西林,翁大根.超高层主楼与裙房黏滞阻尼器连接减振分析研究[J].土木工程学报,2007,40(9):8-15.Gong Z G,Lu X L,Weng D G.Analysis of vibrationreduction of fluid linking dampers connecting mainbuilding with podium[J].China Civil EngineeringJournal,2007,40(9):8-15.(in Chinese)
[7]Lu X L,Gong Z G,Weng D G,et al.The applicationof a new structural control concept for tall buildingwith large podium structure[J].EngineeringStructures,2007,29:1833-1844.
[8]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.Zhu B L.Structural Seismic Test[M].Beijing:Earthquake Press,1989.(in Chinese)
[9]沈德建,吕西林.地震模拟振动台及模型试验研究进展[J].结构工程师,2006,22(6):55-58.Shen D J,Lu X L.Research advances on simulatingearthquake shaking tables and model test[J].Structural Engineers,2006,22(6):55-58.(inChinese)
[10]Luco J E,Francisco C P.De Barros.Optimal dampingbetween two adjacent elastic structures[J].Earthquake Engng Struct Dyn,1998(27):649-659.
[11]翁大根,卢著辉,徐斌,等.黏滞阻尼器力学性能试验研究[J].世界地震工程,2002,18(4):30-34.Weng D G,Lu Z H,Xu B,et al.The experimentalstudy on property of energy dissipation of viscousliquid damper[J].World Earthquake Engineering,2002,18(4):30-34.(in Chinese)
[12]刘绍峰,施卫星.相邻结构连接阻尼器的最优设计参数[J].地震工程与工程振动,2007,27(5):166-172.Liu S F,Shi W X.Optimal design parameters ofadjacent structures linked by damper[J].EarthquakeEngineering and Engineering Vibration,2007,27(5):166-172.(in Chinese)
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