摘要
为研究布置扇形铅黏弹性阻尼器的装配式RCS组合节点框架结构地震响应,选取不可替换的装配式RCS组合节点JD-1、可替换的装配式RCS组合节点JD-2、JD-3、JD-4连接的减震框架结构与普通刚接减震框架结构,对其进行地震响应分析并将计算结果与未设置阻尼器的RCS框架结构结果进行对比分析,研究其减震效果。结果表明:在布置阻尼器后各框架结构地震响应均有所减小,且各装配式RCS框架结构减小幅度较普通刚接RCS框架结构更大;扇形铅黏弹性阻尼器对各RCS框架结构的最大基底剪力的减小效果具有不确定性,因此在实际工程中对于基底剪力应具体情况具体分析;JD-1节点连接框架结构的地震响应减小幅值与JD-2、JD-3、JD-4节点连接框架结构相比不超过5%,相差甚微。
In this paper,to study the influence of fan-shaped lead viscoelastic dampers on seismic response of composite RCS node frame structure,four frame structure models including one with a non-replaceable assembled composite RCS node,JD-1,and three with replaceable assembled composite RCS nodes,JD-2,JD-3 and JD-4 respectively,were simulated and compared with the frame structure with a conventional rigid connection node.Their seismic responses with and without dampers were compared and analyzed to investigate the vibration reduction effects.The results show that the seismic response of each frame structure decreases after the installation of dampers,and the amplitude reduction of each assembled RCS frame structure is greater than that of the conventional RCS frame structure with a rigid connection node.The effect of fan-shaped lead viscoelastic dampers on the reduction of maximum base shear is uncertain.Therefore,the base shear of each RCS frame structure should be analyzed according to the specific condition in practical engineering.Comparing to the frame structures with JD-2,JD-3 and JD-4 connection nodes,the vibration reduction of frame structures with JD-1 node is very small,less than 5%.
作者
刘朋
何昕雷
张文婷
王丽梅
程选生
Liu Peng;He Xinlei;Zhang Wenting;Wang Limei;Cheng Xuansheng(China Railway 21st Bureau Group Second Engineering Co.,Ltd.,Lanzhou 730070,China;Jinshan College of Fujian Agriculture and Forestry University,Fuzhou 350001,China;Western Engineering Research Center of Disaster Mitigation in Civil Engineering of the Ministry of Education,Lanzhou University of Technology,730050,China;Key Labornatory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology,730050,China)
出处
《特种结构》
2021年第1期109-115,共7页
Special Structures
基金
中铁21局科技攻关项目(18B-2)
甘肃省安全生产监督管理局科技攻关项目(GAJ00026)
甘肃省住房和城乡建设厅科技攻关项目(JK-2018-22)
