中文摘要：

随着我国高速铁路的发展,其噪声影响也日益引起社会的关注。掌握高速铁路辐射噪声水平及其特性是开展噪声影响控制的理论基础。在大量高速铁路辐射噪声现场试验研究的基础上,获得了我国高速铁路桥梁线路和路基线路分别在200-300 km/h及300-350 km/h速度区间下的噪声源强特性变化规律,探讨了不同速度区间噪声源强与速度的变化机理。比较分析了中国标准动车组、CRH380、CRH2C动车组等不同车型动车组噪声源强特性的变化,并对高速铁路噪声辐射特性与普速铁路噪声辐射特性及法国、德国、日本等国家高速铁路辐射噪声特性加以对比分析,指出我国高速铁路辐射噪声水平略高于法国、德国等。

英文摘要：

With the development of high speed railway in China,t he influence of noise has aroused more and more social attention and understanding the radiation noise level and its characteristics of high speed railway is the theoretical basis of noise influence and control. Based on a large number of radiation noise field experiments in China high speed railway,the change rules of noise source intensity characteristics were concluded for high speed railway bridge circuit and subgrade circuit with speed of 200 - 300 km /h and 300- 350 km /h respectively,the change mechanism between noise source intensity and velocity in different speed range was discussed,noise source intensity characteristics change of different EMU（ Electric Mutiple Unit） models including Chinese standard EMU,CRH380 and CRH2C was analyzed,the noise radiation characteristics for both high speed railway and common speed railway were compared and radiation noise characteristics of high speed railway in France,Germany and Japan were discussed,which indicated that the radiation noise level of high speed railway in China is slightly higher than that of France and Germany.