基于Bouc-Wen模型的阻尼器附加有效阻尼比解析解及应用  

Analytical solution and application analysis of damper additional damping ratio based on the Bouc-Wen model

作　　者：吴山 何浩祥[1] 王宝顺 陈建伟 WU Shan;HE Haoxiang;WANG Baoshun;CHEN Jianwei(Beijing Key Laboratory of Earthquake Engineering and Structure Retrofit,Beijing University of Technology,Beijing 100124,China;College of Civil and Architectural Engineering,North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点实验室,北京100124 [2]华北理工大学建筑工程学院,河北唐山063210

出　　处：《振动与冲击》2022年第16期10-18,共9页Journal of Vibration and Shock

基　　金：国家自然科学基金(51878017)。

摘　　要：附加有效阻尼比是评价减震结构性能的重要参数,现有的建筑消能减震技术规程规定应采用双线性模型模拟位移相关型阻尼器恢复力性能,但该模型仅能在拟合位移下准确量化阻尼器耗能能力和附加有效阻尼比。Bouc-Wen模型能够在各级位移下准确量化阻尼器耗能,但目前缺乏基于该模型的附加有效阻尼比计算公式。对Bouc-Wen模型进行显式化解析,推导出基于该模型的阻尼器附加有效阻尼比计算公式。结合试验数据,对采用不同模型表征阻尼器耗能能力的精度进行了数值分析和对比,证明了所提方法的精确性。对基于Bouc-Wen模型的附加有效阻尼比进行参数分析,给出了其变化规律和各性能参数影响。基于有限元分析,对采用不同模型计算结构动力响应和附加有效阻尼比的差异进行了对比,进一步验证了该方法的有效性和应用价值。Additional effective damping ratio is an important parameter for evaluating the performance of damped structures.According to existing design codes,the bilinear model should be used to simulate the hysteresis performance of displacement-dependent dampers.However,the model can only accurately quantify the energy dissipation capacity and additional damping ratio under the fitting displacement.The Bouc-Wen model can accurately quantify the energy dissipation of dampers at all displacement levels,but there is no accurate additional effective damping ratio formula based on the model.Based on the explicit analysis of the Bouc-Wen model,the formula for calculating the additional effective damping ratio of the damper was derived.Based on experiment data,the accuracies of different models for characterizing the energy dissipation capacity of dampers were analyzed and compared.The parameter analysis of the additional effective damping ratio based on the Bouc-Wen model was carried out,and the variation law and the influence of performance parameters were given.Based on the finite element model analysis,the differences of the dynamic response and the additional effective damping ratios of different models were compared,which further verified the effectiveness and application value of the proposed method.

关 键 词：减震结构 附加有效阻尼比 BOUC-WEN模型 双线性模型 滞回耗能 

分 类 号：TU352.1[建筑科学—结构工程]