摘要
对隧道、桥梁结构和沿线建筑而言,浮置板减振性能优异,但其对轨道板及其上部结构的耗能能力有限。针对此问题,将调谐质量粒子阻尼技术应用于轨道交通振动控制领域,提出一种基于调谐质量粒子阻尼器(Tuned Mass Particle Damper,TMPD)的耗能型钢弹簧浮置板结构。基于调谐质量阻尼器(Tuned Mass Damper,TMD)及粒子阻尼理论,利用1:1浮置板轨道进行室内试验,通过落轴试验研究调谐质量粒子阻尼器安装前后钢弹簧浮置板轨道动力学特性。研究结果表明:TMPD能显著降低浮置板轨道在固有频率11.7 Hz附近的振动响应,浮置板加速度分频振级损失最大可达11.9 dB;安装TMPD的耗能型钢弹簧浮置板轨道从钢轨到地面的振动衰减最大可达23.6 dB,表明其具有优异的隔振效果;进行Z振级评价分析可得,耗能型钢弹簧浮置板Z振级约降低5 dB,在保证隔振效率基础上,调谐质量粒子阻尼器可提高浮置板轨道的耗能能力。
Floating slab has excellent vibration damping performance for tunnel,bridge structure,buildings and the adjacent line,but the energy dissipation capacity of the track slab and its superstructure is limited.To solve this problem,the Tuned Mass Particle Damper(TMPD)technology was applied to the vibration control of rail transit,and a kind of energy dissipation steel spring floating plate structure based on the TMPD was proposed.Based on the Tuned Mass Damper(TMD)and the theory of particle damping,a 1:1 floating plate track was used for laboratory test,and the dynamic characteristics of the steel spring floating plate track(SSFPT)before and after the installation of the tuned mass particle damper were studied by shaft drop test.The results show that TMPD can significantly reduce the vibration response of the floating plate track near the natural frequency of 11.7 Hz,and the maximum loss of the acceleration of the floating plate can reach 11.9 dB.The vibration attenuation of the energy dissipation SSFPT installed with TMPD is up to 23.6 dB from the rail to the ground,which ensures excellent vibration isolation effect.Through Z vibration level evaluation and analysis,the Z vibration level of the energy dissipation SSFPT is reduced by about 5 dB.On the basis of ensuring vibration isolation efficiency,the tuned mass particle damper can improve the energy dissipation capacity of the floating plate track.
作者
刘艳
李英乐
梁要
LIU Yan;LI Yingle;LIANG Yao(Shanghai Research Institute of Materials Co.,Ltd.,Shanghai 200437,China;School of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China;Shanghai Engineering Research Center of Earthquake Energy Dissipation,Shanghai 200437,China)
出处
《噪声与振动控制》
北大核心
2025年第5期285-291,共7页
Noise and Vibration Control
基金
城市轨道交通数字化建设与测评技术国家工程研究中心开放课题基金资助项目(2023实验研委019号)。
关键词
振动与波
钢弹簧浮置板
调谐质量粒子阻尼器
振动冲击
落轴试验
vibration and wave
steel spring floating plate
tuned mass particle damper
vibration shock
shaft drop test
