建筑结构学报2025，Vol.46Issue(9)：265-275,11.DOI:10.14006/j.jzjgxb.2024.0647
旋转摩擦阻尼器受力性能试验研究
Experimental investigation of basic mechanical properties of rotational friction damper
摘要
Abstract
In order to control the excessive deformation of beam-column joints in ancient timber structures under load and facilitate damper replacement,a rotational friction damper is proposed.This damper achieves variable friction characteristics through the arrangement of arc-sloped frictional surfaces and disc springs.Five dampers were designed with bolt pre-tightening force,friction surface condition,and sliding tooth angle as the main parameters,and experimental research was conducted on rotational friction dampers under reciprocating force.The results show that the hysteresis curves of the damper exhibit a clear'flag-like'shape with asymmetry in positive and negative directions.The dampers have stable mechanical properties and good energy dissipation performance,with the equivalent viscous damping coefficient stably ranging from 0.09 to 0.19.The ultimate bending moment and energy dissipation capacity of dampers are positively correlated with bolt preload,friction surface roughness,and sliding tooth angle.A finite element model of the damper was established,and parametric analysis was conducted on the sliding tooth angle and steel plate thickness of the model.It is found that increasing the sliding tooth angle and steel plate thickness can effectively improve the energy dissipation capacity of the damper,but it needs to be controlled within a reasonable range.It is recommended to have a sliding tooth angle of 10°-15° and a steel plate thickness of 20-40 mm.关键词
旋转摩擦阻尼器/拟静力试验/耗能能力/滞回性能/数值模拟Key words
rotational friction damper/quasi-static test/energy dissipation capacity/hysteresis performance/numerical simulation分类
建筑与水利引用本文复制引用
常鹏,赵荣浩,冯秋歌,杨娜..旋转摩擦阻尼器受力性能试验研究[J].建筑结构学报,2025,46(9):265-275,11.基金项目
中央高校基本科研业务费专项资金资助(2022JBZY008),国家自然科学基金项目(51878034),高等学校学科创新引智计划(B13002). （2022JBZY008）
