非线性黏滞阻尼减震结构基于位移的设计方法
|
摘要
结合我国抗震设计规范,提出非线性黏滞阻尼减震结构基于位移的设计方法。根据减震结构的特点,将其性能划分为使用良好、人身安全和防止倒塌3个水平,并用层间位移角限值予以量化;以简化的方法计算非线性黏滞阻尼器的等效阻尼比。在此基础上将结构转化为等效单自由度体系,利用基于位移的设计方法对非线性黏滞阻尼减震结构进行设计,通过算例,介绍用该方法对框架结构进行非线性黏滞阻尼减震设计的设计过程。实例分析表明,提出的非线性黏滞阻尼减震结构基于位移的设计方法是可行的,并且与时程分析得出的平均结果吻合较好,而且该方法简单实用,便于操作,能够控制减震结构在不同强度水准地震作用下的性能。
A displacement-based design method for energy dissipation structures with nonlinear viscous dampers is proposed in combination with Chinese seismic design code.According to the characteristics of energy dissipation structures,its seismic performance is divided into three levels:serviceability,life-safety,and collapse protection.The three levels are quantified with storey drift ratios.The equivalent damping ratio is evaluated by the simplified method.The structures are transformed into an effective single-degree-of-freedom system,the design method of energy dissipation structures with non-linear viscous dampers is established by displacement-based design method.Application of the method is illustrated by using a frame structure.The results from the case study indicate that the proposed method is feasible,and agrees well with time-history analysis,futher more,the method is simple of applicability,easy to be operated and is able to control the performance of energy dissipation structures under different intensities of earthquake.
A displacement-based design method for energy dissipation structures with nonlinear viscous dampers is proposed in combination with Chinese seismic design code.According to the characteristics of energy dissipation structures,its seismic performance is divided into three levels:serviceability,life-safety,and collapse protection.The three levels are quantified with storey drift ratios.The equivalent damping ratio is evaluated by the simplified method.The structures are transformed into an effective single-degree-of-freedom system,the design method of energy dissipation structures with non-linear viscous dampers is established by displacement-based design method.Application of the method is illustrated by using a frame structure.The results from the case study indicate that the proposed method is feasible,and agrees well with time-history analysis,futher more,the method is simple of applicability,easy to be operated and is able to control the performance of energy dissipation structures under different intensities of earthquake.
引文
[1]梁兴文,黄雅捷,杨其伟.钢筋混凝土框架结构基于位移的抗震设计方法研究[J].土木工程学报,2005,38(9):53-60.
[2]Medhekar MS,Kennedy D J L.Displacement-based seismic design of buildings-theory[J].Engineering Structures,2000,22:201-209.
[3]杨其伟、梁兴文、蒋建.钢筋混凝土框架-剪力墙结构基于位移的抗震设计方法[J].工业建筑,2007,37(2):1-5.
[4]郑久建.黏滞阻尼减震结构分析方法及设计理论研究[D].北京:中国建筑科学研究院,2003.
[5]SEAOC VISION2000Committee,Performance-based seismic engineering[S].
[6]GB50011-2001,建筑抗震设计规范[S].
[7]郭子雄,吕西林,王亚勇.建筑结构抗震变形验算中层间弹性位移角限值的研讨[J].工程抗震,1998,20(2):1-6.
[8]郭子雄,吕西林,王亚勇.建筑结构在罕遇地震下弹塑变形的讨论[J].工程抗震,1999,21(1):13-18.
[9]孙春燕.黏滞阻尼器在结构抗震设计中的应用[D].北京:北京工业大学,2005.
[10]张思海.被动耗能减震结构基于性能的抗震设计方法[D].西安:西安建筑科技大学,2005.
[11]Lin Y Y,Chang K C.An improved capacity spectrum method for ATC-40[J].Earthquake Engineering and Structural Dynamics,2003,32:2013-2025.
[12]Gulkan P.Sozen M.Inelastic response of reinforced concrete structures to earthquakes motions[J].ACI Journal1974,71(4):604-610.
[13]王曙光、刘伟庆.宿迁市教育大厦消能减震设计研究[J].防灾减灾工程学报,2005,25(1):63-68.
[2]Medhekar MS,Kennedy D J L.Displacement-based seismic design of buildings-theory[J].Engineering Structures,2000,22:201-209.
[3]杨其伟、梁兴文、蒋建.钢筋混凝土框架-剪力墙结构基于位移的抗震设计方法[J].工业建筑,2007,37(2):1-5.
[4]郑久建.黏滞阻尼减震结构分析方法及设计理论研究[D].北京:中国建筑科学研究院,2003.
[5]SEAOC VISION2000Committee,Performance-based seismic engineering[S].
[6]GB50011-2001,建筑抗震设计规范[S].
[7]郭子雄,吕西林,王亚勇.建筑结构抗震变形验算中层间弹性位移角限值的研讨[J].工程抗震,1998,20(2):1-6.
[8]郭子雄,吕西林,王亚勇.建筑结构在罕遇地震下弹塑变形的讨论[J].工程抗震,1999,21(1):13-18.
[9]孙春燕.黏滞阻尼器在结构抗震设计中的应用[D].北京:北京工业大学,2005.
[10]张思海.被动耗能减震结构基于性能的抗震设计方法[D].西安:西安建筑科技大学,2005.
[11]Lin Y Y,Chang K C.An improved capacity spectrum method for ATC-40[J].Earthquake Engineering and Structural Dynamics,2003,32:2013-2025.
[12]Gulkan P.Sozen M.Inelastic response of reinforced concrete structures to earthquakes motions[J].ACI Journal1974,71(4):604-610.
[13]王曙光、刘伟庆.宿迁市教育大厦消能减震设计研究[J].防灾减灾工程学报,2005,25(1):63-68.
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