摘要
可恢复功能结构是目前地震工程研究的热点,也是未来发展趋势,以可恢复功能结构为背景,提出了基于高强钢环簧摩擦耗能的自复位消能减震阻尼器,分析了阻尼器的工作原理并给出了构造方案。通过低周往复加载试验考察多次序列地震作用下阻尼器的抗震性能。试验结果表明:采用高强钢环簧的自复位消能减震阻尼器变形能力可调节、自复位性能优良;滞回性能稳定,具有良好的抗震可恢复性;环簧锥形摩擦面处理工艺对阻尼器自复位性能与耗能能力会产生一定影响,当摩擦系数增大时,自复位性能有所降低,但耗能能力增大;所提出的阻尼器理论刚度预测公式计算结果与试验结果吻合较好,可为工程设计提供参考。
The resilience structure is regarded as the future development trend of earthquake engineering. Based on the resilience structure, a self-centering seismic damper based on high-strength steel ring spring which absorbing energy by friction was proposed. The working principle and detailed design of the damper were discussed. The seismic performance of the damper under multiple sequence earthquakes was investigated by low-cycle hysteretic loading test. The test results show that the self-centering seismic damper with high-strength steel ring spring can adjust the deformation capacity, which have excellent self-centering performance. The damper has stable hysteresis performance and good seismic recoverability after multiple earthquakes. The treatment process of ring spring tapered friction surface has influence on the self-centering performance and energy dissipation capacity of the damper. When the friction coefficient increases, the self-centering performance is reduced, but the energy consumption is increased. The damper stiffness prediction of the theoretical formula proposed in this paper agrees well with the experimental results, which can provide reference for engineering design.
作者
赵亚硕
王伟
方成
ZHAO Yashuo;WANG Wei;FANG Cheng(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;Department of Structural Engineering,Tongji University,Shanghai 200092,China)
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2020年第11期108-115,142,共9页
Journal of Building Structures
基金
国家自然科学基金重点国际合作项目(51820105013)
科技部国家重点实验室基金项目(SLDRCE19-B-05)
关键词
可恢复功能结构
自复位阻尼器
摩擦环簧
滞回试验
自复位性能
resilience structure
self-centering damper
friction ring spring
hysteretic test
self-centering performance
