附加阻尼装置的悬挂式巨型钢框架支撑体系模态分析
|
摘要
通过对现有高层建筑结构的体系评价,提出了新的超高层结构体系——附加阻尼装置的悬挂式巨型钢框架支撑体系.建立该体系的三维空间模型,运用有限元方法进行模态分析,并与巨型钢框架悬挂结构和巨型钢桁架悬挂结构的模态进行对比研究.计算研究表明,附加阻尼装置悬挂式巨型钢框架支撑体系具有良好的结构性态,巨型支撑与预应力拉索显著地提高抗侧刚度,同时附加阻尼器使结构密集模态成组及特征相似模态成对现象更为突出.
Through evaluation of existing structural system,a new structural system that mega-suspended steel frame and brace structure with damper was presented.The three-dimension model of this new structure was established and the modal analysis of structure was discussed using finite element method.These analysis results were contrasted respectively with those of mega-frame-suspended structure and mega-truss-suspended structure.It is proved that it has great developing potential.The huge-brace and prestressed cable can improve the lateral stiffness,and the viscoelastic damper spotlights the phenomenon the dense modes group and similar modes come in pairs.
Through evaluation of existing structural system,a new structural system that mega-suspended steel frame and brace structure with damper was presented.The three-dimension model of this new structure was established and the modal analysis of structure was discussed using finite element method.These analysis results were contrasted respectively with those of mega-frame-suspended structure and mega-truss-suspended structure.It is proved that it has great developing potential.The huge-brace and prestressed cable can improve the lateral stiffness,and the viscoelastic damper spotlights the phenomenon the dense modes group and similar modes come in pairs.
引文
[1]阮含婷.附加阻尼的悬挂式巨型钢框架支撑体系性能研究[D].江苏镇江:江苏科技大学,2008.
[2]Vafai A,Eslelcanchi H,Mufid M.The use of single diagonal bracing in improvement of the lateral response of tall buildings[J].Structural Design ofTall Buildings,1995(4):115-126.
[3]马宏.巨型桁架悬挂钢结构体系抗震性能研究[D].江苏南京:南京工业大学,2003.
[4]梁启智,张耀华.巨型框架悬挂体系地震反应特性及阻尼控制研究[J].华南理工大学学报,1999,27(1):106-110.Liang Qizhi,Zhang Yaohua.Research on seismic performance and damper control of mega-frame-suspended structure[J].Journal ofChina South University,1999,27(1):106-110.(in Chinese)
[5]王肇民,邓洪洲,董军.高层巨型框架悬挂结构体系抗震性能研究[J].建筑结构学报,1999,20(1):23-30.Wang Zhaomin,Deng Hongzhou,Dong Jun.Research on anti-seismic performance of mega-frame-suspended structure[J].Journal ofBuilding Structure,1999,20(1):23-30.(in Chinese)
[6]Zheng Tingyin.Asimplified modal of braced steel frames in tall building considering second-order effects[C]∥ProceedingsofSixth Pacific Structural Steel Conference.Beijing:Seismological Press,2001.
[7]邓志恒,秦荣.巨型框筒部分悬挂结构控制体系地震反应特性及阻尼控制研究[J].地震工程与工程振动,2002,22(4):133-138.Deng Zhiheng,Qin Rong.Research on seismic performance and damper control of mega-frame-tube-suspended structure[J].Seismic Engineering and Engineering Vibration,2002,22(4):133-138.(in Chinese)
[8]Jinkoo Kim,Jingook Ryu,Lan Chung.Seismic performance of structures connected by viscoelastic dampers[J].Engineer-ing Structures,2006,28:183-195.
[9]Lian Yeda,Zhang Xunan,Sheldon Cherry.Damping characteristics of friction damped braced frame and its effectiveness inthe mega-sub controlled structure system[J].Earthquake Engineering and Engineering Vibration,2007(6):171-181.
[10]Edward L,Wilson.Static and Dynamic Analysis ofStructures[M].USA:Computers and Structures Inc,1996.
[2]Vafai A,Eslelcanchi H,Mufid M.The use of single diagonal bracing in improvement of the lateral response of tall buildings[J].Structural Design ofTall Buildings,1995(4):115-126.
[3]马宏.巨型桁架悬挂钢结构体系抗震性能研究[D].江苏南京:南京工业大学,2003.
[4]梁启智,张耀华.巨型框架悬挂体系地震反应特性及阻尼控制研究[J].华南理工大学学报,1999,27(1):106-110.Liang Qizhi,Zhang Yaohua.Research on seismic performance and damper control of mega-frame-suspended structure[J].Journal ofChina South University,1999,27(1):106-110.(in Chinese)
[5]王肇民,邓洪洲,董军.高层巨型框架悬挂结构体系抗震性能研究[J].建筑结构学报,1999,20(1):23-30.Wang Zhaomin,Deng Hongzhou,Dong Jun.Research on anti-seismic performance of mega-frame-suspended structure[J].Journal ofBuilding Structure,1999,20(1):23-30.(in Chinese)
[6]Zheng Tingyin.Asimplified modal of braced steel frames in tall building considering second-order effects[C]∥ProceedingsofSixth Pacific Structural Steel Conference.Beijing:Seismological Press,2001.
[7]邓志恒,秦荣.巨型框筒部分悬挂结构控制体系地震反应特性及阻尼控制研究[J].地震工程与工程振动,2002,22(4):133-138.Deng Zhiheng,Qin Rong.Research on seismic performance and damper control of mega-frame-tube-suspended structure[J].Seismic Engineering and Engineering Vibration,2002,22(4):133-138.(in Chinese)
[8]Jinkoo Kim,Jingook Ryu,Lan Chung.Seismic performance of structures connected by viscoelastic dampers[J].Engineer-ing Structures,2006,28:183-195.
[9]Lian Yeda,Zhang Xunan,Sheldon Cherry.Damping characteristics of friction damped braced frame and its effectiveness inthe mega-sub controlled structure system[J].Earthquake Engineering and Engineering Vibration,2007(6):171-181.
[10]Edward L,Wilson.Static and Dynamic Analysis ofStructures[M].USA:Computers and Structures Inc,1996.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心