讨论轮轨噪声激扰之一：冲击噪声激扰。
The impact noise excitation is discussed, and the time-history inputting models for impact noise excitations are founded.
轮轨噪声同比下降超过9分贝，夜间行驶更安静。
The noise generated by wheels and rails was decreased by 9 decibels, which is more favorable for night driving.
城市轨道交通噪声主要由轮轨噪声、动力设备噪声、结构振动噪声组成。
Vibration and noise of urban rail transit have become an intractable probelm. The noise consists of three parts: that induced by wheel and rail; by engine and by viaduct structure.
轨道不平顺是引起车体振动加速度、轮轨作用力和轮轨噪声增大的主要因素之一。
Track irregularity is one of the factors that make the increase of car body vibration, wheel-rail interaction force and wheel-rail noise.
综述了欧洲铁路轮轨噪声研究方法和进展，并对在我国开展轮轨噪声研究提出了建议。
Methods and advances in study of wheel rail noise in Europe railway are introduced and some Suggestions for performing study of wheel rail noise in our country are presented in this paper.
随列车行驶速度逐年提高，气动噪声源逐渐超越轮轨噪声成为高速列车最主要噪声源。
With the constant increase of the trains' speed, the aerodynamic noise gradually succeeds the traditional track noise and becomes the main noise source of the high-speed trains.
结果表明：一、轮轨噪声以钢轨辐射的声能为主；二、不能忽略钢轨横向振动对轮轨噪声的影响。
The first conclusion is that the power of wheel/rail noise is radiated by rail primarily.
研究结果表明，中低速磁悬浮列车运行时相对于普通轮轨噪声较低，就声环境保护角度而言具有较大的优势。
It is shown that the middle-low speed maglev vehicles used for city transportation has advantage over the wheel-rail as far as sound environment protection is conserved.
经过实验室试验和现场安装试验，证明该技术可有效降低轮轨辐射噪声。
After lab test and onset installation test, it has been proved that this technology can effectively reduce the wheel-rail radiation noise.
为了减少蠕滑以抑制作为噪声源的波浪磨耗的形成，最有效的办法是改善轮轨关系。
The most effective way to reduce creepage and to inhibit the formation of such noise-initiating corrugation is through improved control of wheel and rail profiles.
直线电机轮轨交通系统因其造价低、线路适用性强、养护维修简单、噪声低等优点，被业内普遍认为是一种先进的交通方式。
The LIM wheel-rail system has the advantages of low costs, great applicability, low noise and simple maintenance, and is widely believed to be an advanced traffic mode in urban rail transit field.
处于轨道与道床之间的减振橡胶垫对降低轮轨接触噪声起着重要作用，所以对减振橡胶垫各项性能的研究显得非常重要。
The rubber absorbers between rail and sleeper plays significant role in reducing noise due to the friction between rail and wheel.
目前控制轮轨滚动噪声的措施主要是通过改善和优化轨上结构来实现的，而很少考虑轨下基础对噪声的影响。
Currently measures in control of wheel-rail rolling noise mainly by improving and optimizing the rail structure to achieve, but rarely considered the impact of the foundation under rail.
本文就是针对轮轨滚动噪声这一铁路噪声的主要来源进行研究。
Aimed at the rolling noise which is the main source in railway noise, lots researches are done in this field.
本文就是针对轮轨滚动噪声这一铁路噪声的主要来源进行研究。
Aimed at the rolling noise which is the main source in railway noise, lots researches are done in this field.
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