【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。更多还原

【Abstract】 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.更多还原