具有负刚度特征的半周摩擦阻尼装置的开发及应用研究  

Development and application of half-cycle friction damping device with negative stiffness characteristic

作　　者：方国威 孙天威 彭凌云[1] 田杰[1] 康迎杰 FANG Guo-wei;SUN Tian-wei;PENG Ling-yun;TIAN Jie;KANG Ying-jie(Beijing Key Lab of Earthquake Engineering and Structural Retrofit,Beijing University of Technology,Beijing 100124,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京工业大学工程抗震与结构诊治北京市重点试验室,北京100124 [2]清华大学土木工程系,北京100084

出　　处：《振动工程学报》2021年第2期347-356,共10页Journal of Vibration Engineering

基　　金：国家自然科学基金重点资助项目(51738001)。

摘　　要：在消能减震措施中,为达到满意的减震效果,需在建筑结构的多个楼层布置耗能装置,占用了较多的建筑空间,为此提出仅需在底部楼层布置耗能装置的负刚度阻尼消能减震技术方案。为实现该方案,研发了一种力学性能稳定、构造简单,行程大,具有负刚度特征的半周摩擦阻尼装置。通过性能试验验证了该装置能够实现预期的滞回模型,进行了单自由度体系和框架结构的减震模拟分析,结果表明,采用半周摩擦阻尼装置进行减震可以增大结构阻尼、延长结构周期、对结构地震响应起到理想的控制效果。Half-cycle friction damping device with negative stiffness characteristic,which only needs to be arranged at the bottom floors to dissipate energy and reduce shock,is proposed in this work.Due to the stable mechanical properties,simple structure,and large stroke of this device,it can be readily applied in engineering.The expected hysteretic model is obtained by the performance test.Shock absorption simulation analysis for single degree of freedom and frame structure is realized in this work.The results indicate that the half-cycle friction damping device can increase structural damping,extend structure cycle and control the seismic response of the structure.

关 键 词：减震 负刚度装置 半周摩擦阻尼装置 性能试验 数值模拟 

分 类 号：TU352[建筑科学—结构工程]