建筑结构学报2024，Vol.45Issue(5)：92-103,12.DOI:10.14006/j.jzjgxb.2023.0129
变频变摩擦的摩擦摆隔震支座力学性能
Mechanical behavior of friction pendulum bearing with variable frequency and friction
摘要
Abstract
In order to solve the problem that the traditional friction pendulum bearings(FPBs)are inapplicable to a wider range of earthquakes and structures owing to their constant stiffness and damping,a novel friction pendulum bearing with variable frequency and friction(FPB-VFF)is developed,whose stiffness and damping change with isolator displacement.The mechanical behavior and operating principle of the FPB-VFF are analyzed,while its constitutive relationship and expressions of hysteresis parameters are subsequently derived.Creating the finite element model of the FPB-VFF,its effective stiffness,effective damping,and energy dissipation are obtained,and the variation of hysteretic characteristics with bearing parameters was studied.The full-scale component tests of FPB-VFF are conducted to verify the theoretical analysis and finite element modeling.The research shows that the effective stiffness and energy-dissipating capacity of FPB-VFF increases linearly with the friction coefficient of slip zone 2,while the effective damping ratio shows an inverse correlation.Compared with FPB,the effective stiffness,energy-dissipating capacity and effective damping ratio of FPB-VFF increases by 146％,230％and 30％,respectively.关键词
隔震支座/变频变摩擦/本构模型/精细化有限元模型/滞回特性/力学性能Key words
isolation bearing/variable frequency and friction/constitutive relationship model/finite element model/hysteresis characteristics/mechanical behavior分类
建筑与水利引用本文复制引用
尚继英,谭平,韩建平,杨奎,黎庭州..变频变摩擦的摩擦摆隔震支座力学性能[J].建筑结构学报,2024,45(5):92-103,12.基金项目
国家重点研发计划(2021YFC3100700),国家自然科学基金项目(51978185),教育部创新团队项目(IRT13057),甘肃省重点研发计划(22YF7GA161). （2021YFC3100700）
