摘要
首先介绍了桥上轨道结构的减振及隔振垫层原理,然后利用ansys建立在移动荷载作用下桥上轨道结构振动模型,并以外部激励的形式输入轨道不平顺。然后分析了有碴轨道结构在混凝土桥梁上的竖向动力特性,研究不同隔振垫层及参数的情况下,轨道结构的动力响应和加速度频谱,最后对桥上轨道结构的减振设计提出了建议。
The paper described the vibration reducing of track structure on bridge and principle of track pads firstly. And then a vibration model of track structure on bridge is established under the function of moving load by using ANSVS, inputting irregnlarities of track in forms of external excitation. Afterwards, it analysized the vertical dynamical specialty fo ballasted track on concrete bridge, and studied the dynamic response and spectrum of track structure under the influences of track pads and its parameter. Finally, the advices about the vibration reducing design of the ballasted track on bridge are given.
出处
《洛阳工业高等专科学校学报》
2006年第5期8-10,43,共4页
Journal of Luoyang Technology College
关键词
垫层
轨道结构
减振
动力响应
ANSYS
Track pads
Track structure
Vibration reducing
Dynamic response
ANSYS
