摘要
高速铁路对环境的噪声污染是一个不可忽视的问题,在已建立的轮轨滚动噪声预测模型的基础上,以板式轨道为对象,研究了在轮轨表面粗糙度(随机短波激扰)的激励下,轨道刚度变化对高速轮轨系统振动及轮轨噪声的影响。结果表明:降低轨道刚度,可以有效降低轮轨系统400Hz以下频率的振动,但对40Hz以上的振动基本无影响,从而,对轮轨噪声也基本无影响。
It is not an ignorable problem that the high-speed railway produces serious noise pollution to the environment. In this paper, the influence of track stiffness on vibration and noise of highspeed wheel/rail system for slab track is investigated under the excitation of wheel/rail roughness (random short wave) on the basis of wheel/rail noise prediction model. It is shown that the track component stiffness has severe influence on the vibration in the frequency range lower than 400Hz but very little influence on the vibration in the frequency range above 400Hz,and therefore little influence on wheel/rail rolling noise.
出处
《噪声与振动控制》
CSCD
2004年第4期15-18,共4页
Noise and Vibration Control
基金
国家自然科学基金项目(50178061)高等学校骨干教师资助计划项目(无项目号)
关键词
振动与波
轨道刚度
噪声
轮/轨
板式轨道
高速铁路
vibration and wave
track stiffness
noise
wheel/rail
slab track
high-speed railway
