摘要
分别建立了高架浮置板、高架减振器轨道系统的有限元模型,通过数值模拟的方法,比较了这两种高架形式的振动特性,结果表明,浮置板轨道相比减振器轨道基频较低,因而减振性能更好,扣件刚度的变化对高架系统的固有频率几乎没有影响,浮置板支座刚度对高架系统的固有频率影响较大。
The paper respectively establishes finite element model of viaduct floating slab and viaduct absorber rail system, and compares their vibration performance by using numerical simulation. Results show that basic frequency of floating slab rail is lower than that of absorber rail. Owing to its better vibration damping performance, there is nearly no impact of fastener stiffness change upon viaduct system, while the impact of floating slab bearing stiffness upon inherent viaduct system frequency.
出处
《山西建筑》
2013年第7期162-164,共3页
Shanxi Architecture
关键词
城市轨道交通
高架桥
振动特性
固有频率
浮置板
数值模拟
city rail transit
viaduct bridge
vibration performance
inherent frequency
floating slab
numerical simulation
