摘要
基于旋转惯容阻尼器(Rotation Inertia Damper,RID)具有实际物理质量小,且能提供较大阻尼力的特点,提出将RID应用到巨型结构体系,形成RID-巨-子结构消能控制体系。通过建立RID-巨-子结构消能控制体系的振动微分方程,分析RID参数(等效质量和等效阻尼系数)对系统动力特性的影响规律。在此基础上,从结构时程响应及随机响应两个方面研究该新型巨-子结构消能控制体系的减震性能。研究结果表明:RID参数会对系统的自振频率和阻尼比产生不同的影响。RID-巨-子结构消能控制体系相对于巨-子结构抗震体系而言,能有效地减小结构体系在地震激励下响应。所得研究成果可为巨型结构体系的减震设计提供建议。
Due to rotation inertia damper(PID)having a small physical mass and providing a larger damping force,it was proposed to be used in mega-structure systems to form a new RID-mega-substructure energy-dissipating control system.The vibration differential equation of the new RID-mega-substructure energy-dissipating control system was established to analyze the influence law of RID parameters including equivalent mass and equivalent damping coefficient on dynamic characteristics of the new system.Then,the aseismic performance of the new system was studied from two aspects of structural time history response and random response.The study results showed that RID parameters can have different effects on natural frequencies and damping ratios of the new system;compared with a mega-substructure aseismic system,the new RID-mega-substructure energy-dissipating control system can effectively reduce seismic responses of a structural system under earthquake;the results can provide suggestions for aseismic design of mega-structure systems.
作者
李祥秀
刘爱文
刘良坤
李小军
LI Xiangxiu;LIU Aiwen;LIU Liangkun;LI Xiaojun(Institute of Geophysics,China Earthquake Administration,Beijing 100081,China;Dongguan University of Technology,Dongguan 523808,China;School of Civil Engineering,Beijing University of Technology,Beijing 100124,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2021年第3期187-194,共8页
Journal of Vibration and Shock
基金
国家重点研发计划(2016YFC0803107,2017YFC1500404)
中国地震局地球物理研究所基本科研业务费专项(DQJB19B43)
国家自然科学基金(51608491)。
关键词
巨-子结构控制体系
旋转惯容阻尼器
动力特性
减震性能
mega-substructure control system
rotation inertia damper(PID)
dynamic characteristics
aseismic performance
