摘要
对一种改进的拟粘滞摩擦阻尼器进行了试验研究和数值分析。试验结果表明,与凸面拟粘滞摩擦阻尼器相比,改进的拟粘滞摩擦阻尼器的摩擦面由线接触改为面接触,疲劳性能显著改善,阻尼器的吨位也大大提高;与Pall型摩擦阻尼器相比,改进的拟粘滞摩擦阻尼器支撑内力明显降低,尤其是在大位移的情况下更为突出,这将有利于降低柱子的轴力,提高柱的延性。数值分析结果与试验结果吻合较好,说明基于几何非线性的数值分析方法是正确的。
Behavior of an improved pseudo-viscous frictional damper (IPVFD) was studied by testing and numerical analysis. It is shown by testing results that (1) comparing with the previous version of the dampers, the fatigue behavior of IPVFDs was improved markedly and tonnage of IPVFDs was increased greatly in virtue of some amendment on structure; (2) The internal force for support of IPVFDs was remarkablely smaller than that of Pall-type frictional dampers, and it was more conspicuous especially for larger displacement, that is beneficial to reduce the axial pressure of columns thus to improve ductility of columns. Results of the numerical analysis and testing were matched well, that can indicate correctness of this numerical analysis based on geometry nonlinearity.
出处
《土木工程学报》
EI
CSCD
北大核心
2004年第1期24-30,共7页
China Civil Engineering Journal
基金
国家自然科学基金(59908002)
哈尔滨工业大学科学研究基金(HIT200080)
关键词
耗能减振
拟粘滞摩擦阻尼器
性能试验
几何非线性
energy dissipation
pseudo-viscous frictional damper
performance testing
geometry nonlinearity
