附加黏滞阻尼器结构简化分析方法

Simplified method for analysis of structures with supplementary viscous dampers

介绍了FEMA273给出的传统结构线性静力分析方法,并用该法分析附加粘滞流体阻尼器结构,给出了附加粘滞流体阻尼器结构抗震性能评估的具体分析方法。为了验证所提方法的精确性,对设计好的附加黏滞阻尼器结构进行了非线性动力分析,动力分析使用的人工波加速度反应谱形状与设计消能结构时使用的设计反应谱相匹配。实例分析结果表明,该方法能快速、有效地评估附加流体阻尼器结构在大震作用下的抗震性能,特别是在消能结构初步设计和分析阶段。

Linear static procedure for the conventional structure is first introduced. Subsequently this procedure is extended to the analysis of structures with supplementary viscous dampers. The detailed steps for seismic assessment of the damped structure are presented based on the Chinese design response spectrum. Application of the simplified analysis method is illustrated through response time history analyses of the stucture with added viscous dampers under artificial earthquake accelerations that are compatible with ChineSe design response spectrum, Analysis results show that the method can rapidly effectively evaluate the seismic performance of the structure with velocity - dependent energy dissipation devices particularly during the preliminary stage of analysis and design.