| 张敏,范蓓蓓.高效耗能摩擦阻尼钢筋混凝土框架结构减震性能分析[J].计算力学学报,2023,40(6):912~919 |
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| 高效耗能摩擦阻尼钢筋混凝土框架结构减震性能分析 |
| Analysis of the seismic performance of reinforced concrete frame structures with high-efficiency energy-consuming friction dampers |
| 投稿时间：2022-06-07 修订日期：2022-07-19 |
| DOI：10.7511/jslx20220607001 |
| 中文关键词: 摩擦 阻尼器 减震 等效 放大 框架 |
| 英文关键词:friction damper damping equivalent amplification frame |
| 基金项目:国家自然科学基金(51368007)资助项目. |
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| 中文摘要: |
| 研究了高效耗能摩擦阻尼器的减震机理。利用力学原理,分析了地震作用下高效耗能摩擦阻尼器的摩擦阻尼力放大系数变化规律,推导了设置高效耗能摩擦阻尼器结构的等效阻尼比计算公式。在此基础上,对分别设置传统摩擦阻尼器和高效耗能摩擦阻尼器的框架结构进行了地震反应分析,结果表明,高效耗能摩擦阻尼器通过将较小的摩擦阻尼力放大可以显著降低结构地震反应,减震效果良好;利用本文给出的等效阻尼比分析得出结构顶层位移反应幅值,与阻尼等效前相应值误差不超过10%。 |
| 英文摘要: |
| In this paper,the seismic damping mechanism of a high-efficiency energy-consuming friction damper (HFD) is studied.Based on the mechanics principle,the variation law of the frictional damping force amplification coefficient of the HFD under seismic action is analyzed,and the equivalent damping ratio of the structure with HFDs is derived.On this basis,the seismic response analyses of frame structures with conventional friction dampers and with the HFDs are carried out respectively,which shows that the HFDs can significantly reduce the seismic response of the structures by amplifying the smaller frictional damping force,and have good damping effect.The seismic displacement response amplitude of the structures is obtained according to the equivalent damping ratio given in this paper,and the error does not exceed 10% compared with that of the structures with HFDs. |
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