摩擦耗能支撑减震结构最优阻尼参数区间控制效果研究  

Study on damping parameters of friction energy dissipation brace(FDB)

作　　者：刘锐 范康 王砚[2] Liu Rui;Fan Kang;Wang Yan(Xi'an Engineering Investigation&Design Research Institute of China National Nonferrous Metals Industry Co.Ltd,Xi'an 710061,China;School of Civil Engineering and Architecture,Xi'an University of Technology,Xi'an 710048,China)

机构地区：[1]中国有色金属工业西安勘察设计研究院有限公司,陕西西安710061 [2]西安理工大学土建学院,陕西西安710048

出　　处：《工程抗震与加固改造》2024年第2期44-49,43,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：陕西省自然科学基金项目(2018JM1028)。

摘　　要：系统研究了附加摩擦阻尼器的多层摩擦耗能支撑结构(FDBF)的减震效果。针对学者提出的摩擦阻尼器两种恢复力模型:理想弹塑性和Bouc-Wen滞回模型,通过算例分析表明两模型结果数据具有良好的一致性。本文选取一附加摩擦阻尼器的多层结构进行结构建模,通过摩擦耗能支撑(FDB)的3个参数——滑移力、支撑刚度、起滑位移在参数区间内连续变化,对结构顶层最大位移和加速度响应,基底剪力以及体系总耗能和阻尼器耗能比进行了控制效果分析,结果表明耗能支撑参数对结构减震效果影响明显,存在相对较优的参数区间,并在不同特性的结构中得到验证。In order to reduce the seismic vibration of a multi-storey friction energy dissipating braced frame(FDBF).The elasticperfectly and plastic model and the Bouc-Wen hysteresis model are proposed for the friction dampers.The calculation results show that the two models are in good agreement.The 6-storey FDBF was designed as an example and through the continuous change of three parameters of friction energy dissipation brace(FDB),which are slip force,brace stifness and slip displacement,in the parameter intervals,the control effects of the maximum displacement and acceleration response of the top floor of the structure,the base shear force,the total energy consumption of the system and the energy consumption ratio of the damper were analyzed.The results show that the parameters of FDB have obvious influence on the damping effects of the structure,and a relatively better parameter intervals are existed,which is verified in the structures with different natural period.

关 键 词：摩擦耗能支撑 BOUC-WEN模型 支撑刚度 起滑位移 参数研究 

分 类 号：TU352.11[建筑科学—结构工程]