黏滞阻尼器在单层网壳结构中的优化布置
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摘要
目前采用黏滞阻尼器对单层网壳结构进行减振控制时,阻尼器最优布置位置通过试算确定。针对此问题,推导了地震作用下黏滞阻尼器耗能公式,提出了以能量比例系数为评价指标的阻尼器优化布置准则。以单层球面网壳和单层柱面网壳为例,对比分析了地震作用下分别采用优化布置准则与现有布置方式布置阻尼器时结构最大节点位移减振系数,验证了所提出优化布置准则的正确性及在单层球面网壳和单层柱面网壳中的适用性。
It's a time-consuming work to compare control effect of viscous dampers in structure to determine the optimal placement of viscous dampers in single-layer reticulated shell.Energy dissipation of viscous dampers under seismic action is derived,and the optimal placement criterion of viscous dampers is proposed according to energy proportional coefficient which is based on strain energy of members of structure under seismic action.Dynamic nonlinearity analysis is applied to single-layer spherical reticulated shell and single-layer cylindrical reticulated shell with viscous dampers by using optimal placement criterion and existing arrangement mode,and the maximum vibration reduction radio of the displacement is compared to certify the correctness and applicability of optimal placement criterion in single-layer spherical reticulated shell and single-layer cylindrical reticulated shell.
It's a time-consuming work to compare control effect of viscous dampers in structure to determine the optimal placement of viscous dampers in single-layer reticulated shell.Energy dissipation of viscous dampers under seismic action is derived,and the optimal placement criterion of viscous dampers is proposed according to energy proportional coefficient which is based on strain energy of members of structure under seismic action.Dynamic nonlinearity analysis is applied to single-layer spherical reticulated shell and single-layer cylindrical reticulated shell with viscous dampers by using optimal placement criterion and existing arrangement mode,and the maximum vibration reduction radio of the displacement is compared to certify the correctness and applicability of optimal placement criterion in single-layer spherical reticulated shell and single-layer cylindrical reticulated shell.
引文
[1]范峰,沈世钊.网壳结构的粘滞阻尼减振分析与试验研究[J].地震工程与工程振动,2000,20(1):106-111.FAN Feng,SHEN Shizhao.Vibration reducing analysis and experimental study of viscous damper on reticulated shells[J].Journal of EarthquakeEngineering and engineering vibration,2000,20(1):106-111.(in Chinese)
[2]李媛萍,张卫,王仕统.单层球面网壳的粘弹性阻尼器减震控制参数分析[J].暨南大学学报:自然科学版,2010,31(3):263-267.LI Yuanping,ZHANG Wei,WANG Shitong.Parameter analysis of seism ic control about large-scale single-layer spherical shell with viscoelasticdampers[J].Journal of Jinan University:Natural Science,2010,31(3):263-267.(in Chinese)
[3]杨飏,李友明,沈世钊,等.单层网壳结构的阻尼减振控制分析[J].世界地震工程,2009,25(1):143-147.YANG Yang,LI Youming,SHEN Shizhao et al.Vibration control of single-layer lattice spherical shells with bar-type dampers[J].World Earth-quake Engineering,2009,25(1):143-147.(in Chinese)
[4]范峰,沈氏钊.单层柱面网壳的黏滞阻尼器减振分析[J].世界地震工程,2003,19(2):27-32.FAN Feng,SHEN Shizhao.Vibration reduction analysis of viscous damper on single-layer reticulated vaults[J].World Earthquake Engineering,2003,19(2):27-32.(in Chinese)
[5]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报:自然科学版,2006,34(7):859-863.YE Aijun,FAN Linchu.Seismic response reduction of a super-long-span cable-stayed bridge by adding dampers[J].Journal of Tongji University:Natural Science,2006,34(7):859-863.(in Chinese)
[6]杜文风,高博青,董石麟.单层网壳动力失效的形式与特征研究[J].工程力学,2009,26(7):39-46.DU Wenfeng,GAO Boqing,DONG Shilin.Study on types and characters of dynamical failure for single layer latticed shells[J].Engineering Me-chanics,2009,26(7):39-65.(in Chinese)
[7]张微敬,钱稼茹,沈顺高,等.北京A380机库采用黏滞阻尼器的减振控制分析[J].建筑结构学报,2009,30(2):1-7.ZHANG Weijing,QIAN Jiaru,SHEN Shungao,et al.Vibration reduction analyses of Beijing A380 hangar structure with viscous dampers[J].Journal of Building Structures,2009,30(2):1-7.(in Chinese)
[8]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB50011-2010 Code for Seismic Design of Buildings[S].Beijing:China Architecture&Building Press,2010.(in Chinese).
[9]ISO10721-1 Steel structure:material and design[S].Switzerland:European Committee for Standardization,1997.
[10]Marshall P W,Gates W E,Anagnostopoulos S.Inelastic dynamic analysis of tubular offshore structures[C]//Proceedings of Ninth Annual Off-shore Technology Conference,Houston,1977:235-246.
[2]李媛萍,张卫,王仕统.单层球面网壳的粘弹性阻尼器减震控制参数分析[J].暨南大学学报:自然科学版,2010,31(3):263-267.LI Yuanping,ZHANG Wei,WANG Shitong.Parameter analysis of seism ic control about large-scale single-layer spherical shell with viscoelasticdampers[J].Journal of Jinan University:Natural Science,2010,31(3):263-267.(in Chinese)
[3]杨飏,李友明,沈世钊,等.单层网壳结构的阻尼减振控制分析[J].世界地震工程,2009,25(1):143-147.YANG Yang,LI Youming,SHEN Shizhao et al.Vibration control of single-layer lattice spherical shells with bar-type dampers[J].World Earth-quake Engineering,2009,25(1):143-147.(in Chinese)
[4]范峰,沈氏钊.单层柱面网壳的黏滞阻尼器减振分析[J].世界地震工程,2003,19(2):27-32.FAN Feng,SHEN Shizhao.Vibration reduction analysis of viscous damper on single-layer reticulated vaults[J].World Earthquake Engineering,2003,19(2):27-32.(in Chinese)
[5]叶爱君,范立础.附加阻尼器对超大跨度斜拉桥的减震效果[J].同济大学学报:自然科学版,2006,34(7):859-863.YE Aijun,FAN Linchu.Seismic response reduction of a super-long-span cable-stayed bridge by adding dampers[J].Journal of Tongji University:Natural Science,2006,34(7):859-863.(in Chinese)
[6]杜文风,高博青,董石麟.单层网壳动力失效的形式与特征研究[J].工程力学,2009,26(7):39-46.DU Wenfeng,GAO Boqing,DONG Shilin.Study on types and characters of dynamical failure for single layer latticed shells[J].Engineering Me-chanics,2009,26(7):39-65.(in Chinese)
[7]张微敬,钱稼茹,沈顺高,等.北京A380机库采用黏滞阻尼器的减振控制分析[J].建筑结构学报,2009,30(2):1-7.ZHANG Weijing,QIAN Jiaru,SHEN Shungao,et al.Vibration reduction analyses of Beijing A380 hangar structure with viscous dampers[J].Journal of Building Structures,2009,30(2):1-7.(in Chinese)
[8]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB50011-2010 Code for Seismic Design of Buildings[S].Beijing:China Architecture&Building Press,2010.(in Chinese).
[9]ISO10721-1 Steel structure:material and design[S].Switzerland:European Committee for Standardization,1997.
[10]Marshall P W,Gates W E,Anagnostopoulos S.Inelastic dynamic analysis of tubular offshore structures[C]//Proceedings of Ninth Annual Off-shore Technology Conference,Houston,1977:235-246.
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