摘要
为了研究垫板刚度对地铁中大量使用的双弹性垫板扣件减振性能的影响,通过对简化模型的理论推导,以及采用实验室测试和数值模拟相结合的方法,得出:板下垫板刚度越大,则轨道板位移频响越大,轨下垫板刚度大小对轨道板振动位移频响基本没有影响;轨下垫板刚度以及板下垫板刚度越大,则轨道板振动加速度频响越小。因此,设计开发双弹性垫板的扣件,应该根据轨道板位移控制和加速度控制综合考虑。
In order to understand the impact of the stiffness of the pad on the vibration reduction performance of fasteners with two elastic pads, this paper, by means of theoretical derivation of simplified model, laboratory test and numerical simulation, concludes that with the increase of the stiffness of the pad under slab, the frequency response of slab displacement increases. The pad stiffness under rail hardly affects frequency response of track slab displacement. The bigger the stiffness of the pad under rail the pad under slab, the smaller the frequency response of track acceleration. Therefore, fasteners with double elastic pads should be designed and developed based on displacement and acceleration of track slab vibration.
出处
《铁道标准设计》
北大核心
2015年第2期9-12,共4页
Railway Standard Design
基金
国家自然科学基金项目(51008017)
高等学校博士学科点专项科研基金(20110009120023)
关键词
地铁
轨道扣件
双弹性垫板
刚度
振动
Metro
Track fastener
Double elastic Pad
Stiffness
Vibration
