华中科技大学学报（自然科学版）2025，Vol.53Issue(2)：32-39,8.DOI:10.13245/j.hust.250063
新型自复位摩擦阻尼器及其滞回性能研究
Research on novel self-centering friction damper and its hysteresis performance
摘要
Abstract
A new type of self-centering friction damper was developed to improve the seismic capacity of continuous girder bridges.The structural form and working mechanism of the damper were elaborated on and the theoretical formula of the damper's mechanical model was derived based on static equilibrium conditions.The key parameters affecting the mechanical performance of the damper were analyzed using finite element simulation,and the results of the mechanical model calculation were compared with the simulation results of the finite element model.The study results show that the self-centering friction damper exhibits a stable flag type with good energy dissipation and self-centering performance.Parameters such as the initial inclination angle of the winding rope,the number of winding turns of the winding rope and the stiffness of the self-centering spring have a significant effect on the mechanical properties of this damper,and these parameters should be optimized in the design to obtain excellent mechanical properties.The calculation results of the mechanical model are in good agreement with the simulation results of the finite element method,demonstrating that the established mechanical model can effectively reflect the hysteretic performance of the damper under cyclic loading.关键词
摩擦阻尼器/耗能能力/自复位性能/有限元模拟/参数分析Key words
friction damper/dissipation capability/self-centering performance/finite element simulation/parameter analysis分类
土木建筑引用本文复制引用
张文学,时寄哲,张成,郑永瑞..新型自复位摩擦阻尼器及其滞回性能研究[J].华中科技大学学报（自然科学版）,2025,53(2):32-39,8.基金项目
国家自然科学基金资助项目(51778022) （51778022）
北京市自然科学基金资助项目(8172008). （8172008）
