L形偏心框架结构混合减震分析
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摘要
针对L形偏心框架结构平面不规则问题,通过在外围框架设置屈曲约束支撑与粘滞阻尼器,采用串联刚片模型建立了偏心结构平扭耦联动力方程,运用有限元方法构建某国家工程实验室三维模型,对比分析了结构的扭转周期比、扭转位移比、层间位移角、层剪力最大值,研究了屈曲约束支撑与粘滞阻尼器混合减震方法对L形偏心框架结构的减震效果。计算结果表明:屈曲约束支撑能较好地控制结构的扭转周期比、扭转位移比;而粘滞阻尼器能大幅度减小结构的层间位移角、层剪力最大值,减震效果明显。
The irregular plain problem of L-shaped eccentric frame structure was solved by installing buckling-restrained brace and viscous damper in the outer frame.A translation-torsion coupling dynamic equation of the eccentric structure was established with the series mass model.A three-dimensional model of one National Engineering Laboratory was built using the finite element method.The ratio of torsion period to translation period,torsional displacement ratio,story drift and maximum story shear of the structure were analyzed comparatively,and the effect of buckling-restrained brace and viscous damper hybrid energy dissipation method on the L-shaped eccentric frame was studied.The results showed that the buckling-restrained brace can control the ratio of torsion period to translation period and torsional displacement ratio well,and the viscous damper can greatly reduce structural story drift and maximum story shear,and the damping effect is quite obvious.
引文
[1]MINORU W.Design of earthquake-resistant buildings[M].New York:Mc Craw-Hill Company,1986:92-93.
    [2]MELI R.The 1985 earthquake:causes and effects in Mexico City[J].Concrete Int,1986,8(5):23-34.
    [3]TSAI K C,HSIAO C P.Overview of building damage in 921 Chi-chi Earthquake[J].Earthquake Engineering and Engineering Seismology,2000,2(1):93-108.
    [4]吴晓云,陈森,魏琏.论地震作用下多层平扭耦联建筑的刚心[J].地震工程与工程振动,1998,8(4):33-44.
    [5]李创第,刘伟,葛新广,等.带支撑分数导数粘滞阻尼器减震结构随即响应[J].广西大学学报:自然科学版,2010,36(1):28-32.
    [6]周云.粘滞阻尼减震结构设计[M].武汉:武汉理工大学出版社,2006.
    [7]刘鹏飞,刘伟庆,王曙光,等.非线性粘滞阻尼减震结构基于位移的设计方法[J].世界地震工程,2009,25(4):167-173.
    [8]陈敏,贺国京.阻尼器在框架结构中的优化布置策略[J].土木建筑与环境工程,2013,35(4):21-27.
    [9]CHANG K,LIN Y,CHEN C.Shaking table study on displacement-based design for seismic retrofit of existing buildings using nonlinear viscous dampers[J].Journal of Structural Engineering,2008,134(4):671-681.
    [10]吴从晓,周云,邓雪松,等.高位转换粘滞阻尼减震结构阻尼器合理阻尼系数研究[J].振动与冲击,2011,30(3):180-184.
    [11]郭彦林,刘建彬.结构的耗能减震与防屈曲支撑[J].建筑结构,2005,35(8):18-23.
    [12]刘建彬.防屈曲支撑及防屈曲支撑钢框架设计理论研究[D].北京:清华大学土木工程学院,2005.
    [13]CHOIH K M.Energy-based seismic design of buckling-restrained braced frames using hysteretic energy spectrum[J].Engineering Structures,2006,28:304-311.
    [14]李霆,王小南.武汉保利广场混合减震连体高层结构设计[J].建筑结构,2012,42(12):1-7.
    [15]李霆,王小南.武汉保利广场混合减震连体高层抗震性能研究[J].建筑结构,2012,42(12):8-12.
    [16]沈聚敏.抗震工程学[M].北京:中国建筑工业出版社,2000.

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