带刚性伸臂减震层高层结构抗震效果分析
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摘要
带刚性伸臂减震层高层结构的抗震性能较好,但其相关研究却比较少。本文通过推导黏滞阻尼器的单周简谐振动耗能能力公式,得到黏滞阻尼器在高层建筑中合适的参数设置范围。假定总阻尼系数和单个阻尼器的其他参数不变,比较设置1~4道刚性伸臂减震层时结构的性能差异,可知多道减震层结构单个指标虽不是最好,但综合性能更好。假定单个阻尼器其他参数不变时,通过变化结构总阻尼系数,得知带刚性伸臂减震层高层结构附设阻尼器存在最优总阻尼系数(即最优附加阻尼比),通过对相应内力和位移规律的总结,得到结构合理总阻尼系数的选取规则。由此可知,附加阻尼比大小而非减震层数量才是决定此类减震结构抗震性能的关键。
High-rise building with damping rigid outrigger storeys has good seismic performance and has been used in engineering. However,there are few reports about the research of this structure. In this paper,the energy dissipation formula of one cycle of simple harmonic vibration for viscous damper has been derived. Based on it,the parameters of the selection method of viscous damper in the high-rise building is presented. Assuming that the total damping coefficients and other parameters of single damper are unchanged,the seismic performance of high-rise buildings with different damping layers are compared. The results indicate that the total performance of the buildings with multiple damping layers is better. Assuming that other parameters of single damper are unchanged,the rules of internal forces and displacements in the high-rise building with damping rigid outrigger storeys changing with its total damping coefficients are set up. Based on it,the selection criteria of total optimal damping coefficients are the key of the structure.
High-rise building with damping rigid outrigger storeys has good seismic performance and has been used in engineering. However,there are few reports about the research of this structure. In this paper,the energy dissipation formula of one cycle of simple harmonic vibration for viscous damper has been derived. Based on it,the parameters of the selection method of viscous damper in the high-rise building is presented. Assuming that the total damping coefficients and other parameters of single damper are unchanged,the seismic performance of high-rise buildings with different damping layers are compared. The results indicate that the total performance of the buildings with multiple damping layers is better. Assuming that other parameters of single damper are unchanged,the rules of internal forces and displacements in the high-rise building with damping rigid outrigger storeys changing with its total damping coefficients are set up. Based on it,the selection criteria of total optimal damping coefficients are the key of the structure.
引文
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[2]Chen Y,Mcfarland D M.Analysis of tall building with damped outriggers[J].Journal of Structural Engineering,2010,136(11):1435-1443.
[3]钟栋青,王曙光,刘伟庆.在振动台模型试验中黏滞阻尼器的设计方法[J].地震工程与工程振动,2011,31(6):191-195.ZHONG Dongqing,WANG Shuguang,LIU Weiqing.Design method of viscous dampers in shaking table model test[J].Earthquake Engineering and Engineering Dynamics,2011,31(6):191-195.(in Chinese)
[4]Smith R J,Willford M R.The damped outrigger concept for tall building[J].The Structural Design of Tall and Special Buildings,2007,16(4):501-517.
[5]林绍明,周云,邓雪松.带黏滞减震层高层结构的优化分析[J].土木工程学报,2013,46(10):71-81.LIN Shaoming,ZHOU Yun,DENG Xuesong.Optimization analysis of high-rise structure with viscous energy-dissipation story[J].China Civil Engineering Journal,2013,46(10):71-81.(in Chinese)
[6]Jeremiah C.Application of damping in high-rise buildings[D].Boston Massachusetts Institute of Technology,2006.
[7]Willford M R,Smith R J.Performance based seismic and wind engineering for 60 story twin towers inmanila[C]∥The 14th Word Conference on Earthquake Enginneering,October 12-17,2008,Beijing,China.
[8]Constantinou M C,Tsopelas P.Toggle-brace-damper seismic energy disspation systems[J].Journal of Structural Engineering,2001,127(2):105-112.
[9]GB50011-2011建筑抗震设计规范[S].北京:中国建筑工业出版社,2011.GB50011-2011 Code for Seismic Design of Building[S].Beijing:China Architecture&Building Press,2011.(in Chinese)
[10]JGJ3-2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2011.JGJ3-2010 Technical Specification for Concrete Structures of Tall Buiding[S].Beijing:China Architecture&Building Press,2010.(in Chinese)
[11]汪志昊,陈政清.高层建筑结构中黏滞阻器的新型安装方式[J].世界地震工程,2010,26(4):135-140.WANG Zhihao,CHEN Zhengqing.New installations of viscous dampers in high rise buildings[J].World Earthquake Engineering,2010,26(4):135-140.(in Chinese)
[12]吴宏磊,丁洁民,崔剑桥,等.超高层建筑结构加强层耗能减震技术及连接节点设计研究[J].建筑结构学报,2014,35(3):2-15.WU Honglei,DING Jiemin,CUI Jianqiao,et al.Study on energy dissipation technology and connection design for outriggers and belt members of super high-rise buildings[J].Journal of Building Structures,2014,35(3):8-15.(in Chinese)
[2]Chen Y,Mcfarland D M.Analysis of tall building with damped outriggers[J].Journal of Structural Engineering,2010,136(11):1435-1443.
[3]钟栋青,王曙光,刘伟庆.在振动台模型试验中黏滞阻尼器的设计方法[J].地震工程与工程振动,2011,31(6):191-195.ZHONG Dongqing,WANG Shuguang,LIU Weiqing.Design method of viscous dampers in shaking table model test[J].Earthquake Engineering and Engineering Dynamics,2011,31(6):191-195.(in Chinese)
[4]Smith R J,Willford M R.The damped outrigger concept for tall building[J].The Structural Design of Tall and Special Buildings,2007,16(4):501-517.
[5]林绍明,周云,邓雪松.带黏滞减震层高层结构的优化分析[J].土木工程学报,2013,46(10):71-81.LIN Shaoming,ZHOU Yun,DENG Xuesong.Optimization analysis of high-rise structure with viscous energy-dissipation story[J].China Civil Engineering Journal,2013,46(10):71-81.(in Chinese)
[6]Jeremiah C.Application of damping in high-rise buildings[D].Boston Massachusetts Institute of Technology,2006.
[7]Willford M R,Smith R J.Performance based seismic and wind engineering for 60 story twin towers inmanila[C]∥The 14th Word Conference on Earthquake Enginneering,October 12-17,2008,Beijing,China.
[8]Constantinou M C,Tsopelas P.Toggle-brace-damper seismic energy disspation systems[J].Journal of Structural Engineering,2001,127(2):105-112.
[9]GB50011-2011建筑抗震设计规范[S].北京:中国建筑工业出版社,2011.GB50011-2011 Code for Seismic Design of Building[S].Beijing:China Architecture&Building Press,2011.(in Chinese)
[10]JGJ3-2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2011.JGJ3-2010 Technical Specification for Concrete Structures of Tall Buiding[S].Beijing:China Architecture&Building Press,2010.(in Chinese)
[11]汪志昊,陈政清.高层建筑结构中黏滞阻器的新型安装方式[J].世界地震工程,2010,26(4):135-140.WANG Zhihao,CHEN Zhengqing.New installations of viscous dampers in high rise buildings[J].World Earthquake Engineering,2010,26(4):135-140.(in Chinese)
[12]吴宏磊,丁洁民,崔剑桥,等.超高层建筑结构加强层耗能减震技术及连接节点设计研究[J].建筑结构学报,2014,35(3):2-15.WU Honglei,DING Jiemin,CUI Jianqiao,et al.Study on energy dissipation technology and connection design for outriggers and belt members of super high-rise buildings[J].Journal of Building Structures,2014,35(3):8-15.(in Chinese)
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