设置支撑的实用粘弹性阻尼器耗能系统非均匀与完全非平稳地震响应的解析分析

Analytical analysis of energy dissipation system with practical viscoelastic damper supported by braces under non-uniform and fully non-stationary earthquake action

对单自由度设置支撑的实用粘弹性阻尼器耗能减震系统,基于非均匀与完全非平稳地震激励的频域响应解析分析方法进行了系统研究。首先,对设置支撑的实用粘弹性阻尼器进行等效处理;然后,利用非扩阶精确法得到耗能减震结构系统瞬态响应精确解;最后获得非均匀与完全非平稳激励下响应的解析表达式。采用频响函数法验证了该方法的正确性。本文方法的提出为设置支撑的实用粘弹性耗能减震结构在非均匀与完全非平稳地震激励下的响应分析提供一种新思路,也为基于该方法的抗震动力可靠度分析提供了途径。

Analytical frequency domain analysis method of single-degree-freedom energy dissipation system with practical viscoelastic damper supported by braces under non-uniform and fully non-stationary earthquake action is systematically studied.First of all,the equivalent calculation model of damper with braces is built;and then,the exact solutions of transient response of energy dissipation system is obtained by non-expanded-order analytic method;finally,the analytical expressions of the system under non-uniform and fully non-stationary excitations are deduced.Frequency response function method is applied to verify the validity of the proposed method.The suggested analysis method in this paper gives new access to analysis of energy dissipation system with practical viscoelastic damper supported by braces under non-uniform and fully non-stationary earthquake action and seismic dynamic reliability.