材料阻尼对钢筋混凝土框架结构动力响应影响分析
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摘要
介绍应力相关复阻尼模型求解结构动力响应的方法;并在时域内考虑阻尼是一个变量,采用应力相关复阻尼模型计算一个钢筋混凝土框架结构的动力响应和结构的材料阻尼值,按相同的阻尼比,采用黏性阻尼模型计算了同一个钢筋混凝土框架结构的响应,并将结果进行对比,分析两种不同的阻尼模型对结构动力响应的影响。结果表明,结构的材料阻尼值都表现出随应力增长而增大的特性,该特性有利于增加结构的耗能,且能有效抑制结构振动响应振幅;采用不同类型的阻尼对结构响应影响很大。
The solution method for structural dynamic response by using stress related complex damping models is discussed.By considering damping as a variable in time domain,stress related complex damping model is used to calculate the dynamic response and material damping of a reinforced concrete frame structure.With an equal damping ratio,a viscous damping model is used to calculate the response of the same structure.Analysis of the influence of two different damping models on the structural dynamic response indicates that the material damping of the structure increases with the stress,which is advantageous to increasing the energy dissipation of the structure,that it is effective to control the response amplitude of the structure vibration,and that damping has considerable influence on the structural dynamic response.
The solution method for structural dynamic response by using stress related complex damping models is discussed.By considering damping as a variable in time domain,stress related complex damping model is used to calculate the dynamic response and material damping of a reinforced concrete frame structure.With an equal damping ratio,a viscous damping model is used to calculate the response of the same structure.Analysis of the influence of two different damping models on the structural dynamic response indicates that the material damping of the structure increases with the stress,which is advantageous to increasing the energy dissipation of the structure,that it is effective to control the response amplitude of the structure vibration,and that damping has considerable influence on the structural dynamic response.
引文
[1]GB50011—2001建筑抗震设计规范[S](GB50011—2001Code for seismic design of buildings[S](in Chinese))
[2]Specifications for Highway Bridge[S].Japan Road Association,2002
[3]Newmark N M,Hall W J.Seismic design criteria for nuclear reactor fac ilities[C]//Proceedings of FourthWorld Conference on Earthquake Engineering.Santiago:1969
[4]张相庭.结构阻尼耗能假设及在振动计算中的应用[J].振动与冲击,1982,(2):12-22(ZhangXiangting.Hypothesis on energy loss due to structural damping and its application to the vibration calculation[J].Journal of Vibration and Shock,1982,(2):12-22(in Chinese))
[5]Ahid D,Nashif,et al.Vibration damping[M].New York:John Wiley&Sons,1985
[6]刘传文,徐升桥.丫髻沙大桥主桥的地震反应[J].铁道标准设计,2000,20(12):8-11(Liu Chuanwen,Xu Shengqiao.Seismic response of the main span of Ya Jisha Bridge[J].Railway Standard Design,2000,20(12):8-11(in Chinese))
[7]Wen J,Wang Y F.The influence of damping change on dynamic response of concrete-filled steel tubular arch bridge[sC]//Proceedings of the4th International Conference on Advances in Steel Structures(ICASS).Shanghai:2005:1675-1680
[8]文捷.钢筋混凝土及钢管混凝土材料阻尼研究[D].北京:北京交通大学,2006(Wen Jie.Study on material damping of reinforced concrete and concrete-filled steel tube[D].Beijing:Beijing Jiaotong University,2006(in Chinese))
[9]Lazan B J.Damping of material and members in structural mechanics[M].London:Pergamon Press,1968
[10]Myklestad N O.The concept of complex damping[J].Journal of Applied Mechanics,1952,19(3):20-30
[2]Specifications for Highway Bridge[S].Japan Road Association,2002
[3]Newmark N M,Hall W J.Seismic design criteria for nuclear reactor fac ilities[C]//Proceedings of FourthWorld Conference on Earthquake Engineering.Santiago:1969
[4]张相庭.结构阻尼耗能假设及在振动计算中的应用[J].振动与冲击,1982,(2):12-22(ZhangXiangting.Hypothesis on energy loss due to structural damping and its application to the vibration calculation[J].Journal of Vibration and Shock,1982,(2):12-22(in Chinese))
[5]Ahid D,Nashif,et al.Vibration damping[M].New York:John Wiley&Sons,1985
[6]刘传文,徐升桥.丫髻沙大桥主桥的地震反应[J].铁道标准设计,2000,20(12):8-11(Liu Chuanwen,Xu Shengqiao.Seismic response of the main span of Ya Jisha Bridge[J].Railway Standard Design,2000,20(12):8-11(in Chinese))
[7]Wen J,Wang Y F.The influence of damping change on dynamic response of concrete-filled steel tubular arch bridge[sC]//Proceedings of the4th International Conference on Advances in Steel Structures(ICASS).Shanghai:2005:1675-1680
[8]文捷.钢筋混凝土及钢管混凝土材料阻尼研究[D].北京:北京交通大学,2006(Wen Jie.Study on material damping of reinforced concrete and concrete-filled steel tube[D].Beijing:Beijing Jiaotong University,2006(in Chinese))
[9]Lazan B J.Damping of material and members in structural mechanics[M].London:Pergamon Press,1968
[10]Myklestad N O.The concept of complex damping[J].Journal of Applied Mechanics,1952,19(3):20-30
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