某大型复杂结构地震响应与控制研究
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摘要
针对某大型复杂结构的地震响应及控制策略进行了研究。首先,建立该结构的整体有限元模型,采用Ritz向量法对结构进行模态分析,研究该复杂结构的振动特性,基于位能加权平均法求解了该复杂结构等效阻尼比;随后,研究了不同布置型式下粘滞消能支撑的受力特点和计算模型;最后.对该结构进行减振设计,分析了不同消能支撑布置形式下的减振效果。结果表明,采用消能减震装置能有效降低复杂结构的地震响应,且并不改变结构体型;同等减震效果前提下,采用人字形支撑比采用斜撑更为经济。本文工作可供类似的大型复杂结构减震设计参考和借鉴。
In this paper,the seismic response and its control strategy of a large complex structure are studied. Firstly,a finite element model of the structure is established,and the vibration properties are studied by using Ritz vector method.Then the damping ratio of the complex structure is obtained using weighted average potential method.Secondly,the mechanical properties of viscous energy dissipation braces of different types and the calculation model are studied.Lastly,the structural control plans for this structure are designed,and the reduction performance of different plans is analyzed.The results shows that the seismic response can be reduced effectively by configuring energy dissipation device and at the same time the architecture modeling does not need changing.Also it can be concluded that compared to the diagonalbraces, using chevron-braces is much more economical.The study of this paper can provide an important refcrence for the analysis of the structural control of large complex structures.
In this paper,the seismic response and its control strategy of a large complex structure are studied. Firstly,a finite element model of the structure is established,and the vibration properties are studied by using Ritz vector method.Then the damping ratio of the complex structure is obtained using weighted average potential method.Secondly,the mechanical properties of viscous energy dissipation braces of different types and the calculation model are studied.Lastly,the structural control plans for this structure are designed,and the reduction performance of different plans is analyzed.The results shows that the seismic response can be reduced effectively by configuring energy dissipation device and at the same time the architecture modeling does not need changing.Also it can be concluded that compared to the diagonalbraces, using chevron-braces is much more economical.The study of this paper can provide an important refcrence for the analysis of the structural control of large complex structures.
引文
[1]李爱群.工程结构减振控制[M].北京:机械工业出版社,2007.
[2]滕军.结构振动控制的理论、技术和方法[M].北京:科学出版社,2009.
[3]JG/T 209-2007,建筑消能阻尼器[S].
[4]JG 118-2000,建筑隔震橡胶支座[S].
[5]Symans M D,Charney F A,Whittaker A S,et al. Energy dissipation systems for seismic applications: Current practice and recent developments[J].Journal of Structural Engineering-ASCE.2008,134(1):3-21.
[6]GB 50011-2001,建筑抗震设计规范[S].
[7]American Institute of Steel Construction I.Floor vibrations due to human activity[S].USA,Chicago, Illinois,2003.
[8]09SG 6610-2,建筑结构消能减震(振)设计——国家建筑标准设计图集[S].
[9]李爱群.粘滞流体阻尼器在高层建筑减振设计中的应用研究[J].徐州工程学院学报,2005,20(1):7-14. Li A Q.Research on energy dissipation design of high-rise building using fluid viscous damper[J]. Journal of Xuzhou Institute of Technology,2005,20 (1):7-14.
[10]黄瑞新,李爱群,张志强,等.北京奥林匹克中心演播塔TMD风振控制[J].东南大学学报(自然科学版), 2009,39(3):519-524. Huang R X,Li A Q,Zhang Z Q,et al.TMD vibration control of Beijing Olympic Center broadcast tower under fluctuating wind load[J].Journal of Southeast University(Natural Science Edition),2009,39(3): 519-524.
[11]李爱群,陈鑫,张志强.大跨楼盖结构减振设计与分析[J].建筑结构学报,2010,31(6):160-170. Li A Q,Chen X,Zhang Z Q.Design and analysis on vibration control of long-span floor structures[J]. Journal of Building Structures,2010,31(6):160-170.
[12]陈鑫,李爱群,沈顺高,等.基于纤维模型的空间网架支承方案优化设计与分析[J].防灾减灾工程学报, 2010,30(4):398-406. Chen X,Li A Q,Shen S G,et al.Optimal design and analysis on space grid structure with large column spacing based on fiber model[J].Journal of Disaster Prevention and Mitigation Engineering,2010,30(4): 398-406.
[13]Hwang J S,Huang Y N,Hung Y H.Analytical and experimental study of toggle-braced-damper systems [J].Journal of Structural Engineering,2005,131(7): 1035-1043.
[14]Constaninou M C,Tsopelas P,Hammel W.Testing and Modeling of an Improved Damped Configuration for Stiff Structural Systems[EB/OL].http://civil. Eng.Buffalo.edu/users.ntwk/,1997.
[15]东南大学土木工程学院.苏州工业园区档案管理中心大楼减振分析报告[R].南京:东南大学,2008.
[16]Chen X,Li A Q,Liu T,et al.Study and Design on Viscous Energy Dissipation Braces[C]// Proceedings of International Conference on Health Monitoring of Structure,Material and Environment(Volume 1), Nanjing:Southeast University,2007.379-383.
[2]滕军.结构振动控制的理论、技术和方法[M].北京:科学出版社,2009.
[3]JG/T 209-2007,建筑消能阻尼器[S].
[4]JG 118-2000,建筑隔震橡胶支座[S].
[5]Symans M D,Charney F A,Whittaker A S,et al. Energy dissipation systems for seismic applications: Current practice and recent developments[J].Journal of Structural Engineering-ASCE.2008,134(1):3-21.
[6]GB 50011-2001,建筑抗震设计规范[S].
[7]American Institute of Steel Construction I.Floor vibrations due to human activity[S].USA,Chicago, Illinois,2003.
[8]09SG 6610-2,建筑结构消能减震(振)设计——国家建筑标准设计图集[S].
[9]李爱群.粘滞流体阻尼器在高层建筑减振设计中的应用研究[J].徐州工程学院学报,2005,20(1):7-14. Li A Q.Research on energy dissipation design of high-rise building using fluid viscous damper[J]. Journal of Xuzhou Institute of Technology,2005,20 (1):7-14.
[10]黄瑞新,李爱群,张志强,等.北京奥林匹克中心演播塔TMD风振控制[J].东南大学学报(自然科学版), 2009,39(3):519-524. Huang R X,Li A Q,Zhang Z Q,et al.TMD vibration control of Beijing Olympic Center broadcast tower under fluctuating wind load[J].Journal of Southeast University(Natural Science Edition),2009,39(3): 519-524.
[11]李爱群,陈鑫,张志强.大跨楼盖结构减振设计与分析[J].建筑结构学报,2010,31(6):160-170. Li A Q,Chen X,Zhang Z Q.Design and analysis on vibration control of long-span floor structures[J]. Journal of Building Structures,2010,31(6):160-170.
[12]陈鑫,李爱群,沈顺高,等.基于纤维模型的空间网架支承方案优化设计与分析[J].防灾减灾工程学报, 2010,30(4):398-406. Chen X,Li A Q,Shen S G,et al.Optimal design and analysis on space grid structure with large column spacing based on fiber model[J].Journal of Disaster Prevention and Mitigation Engineering,2010,30(4): 398-406.
[13]Hwang J S,Huang Y N,Hung Y H.Analytical and experimental study of toggle-braced-damper systems [J].Journal of Structural Engineering,2005,131(7): 1035-1043.
[14]Constaninou M C,Tsopelas P,Hammel W.Testing and Modeling of an Improved Damped Configuration for Stiff Structural Systems[EB/OL].http://civil. Eng.Buffalo.edu/users.ntwk/,1997.
[15]东南大学土木工程学院.苏州工业园区档案管理中心大楼减振分析报告[R].南京:东南大学,2008.
[16]Chen X,Li A Q,Liu T,et al.Study and Design on Viscous Energy Dissipation Braces[C]// Proceedings of International Conference on Health Monitoring of Structure,Material and Environment(Volume 1), Nanjing:Southeast University,2007.379-383.
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