300km/h高速列车过站时机场地下车站辐射噪声研究

Research on the Radiation Noise of Airport Underground Station with 300 km/h High-speed Train Passing Through

为研究高速列车以300 km/h速度下穿某机场地下车站时的车站辐射噪声,基于统计能量法(Statistical Energy Analysis,SEA)建立该地下车站的SEA模型,进行地下车站辐射噪声预测研究。通过开展高速列车噪声实车测试,获得转向架、受电弓等主要噪声源区域的声功率级频谱。将实车噪声测试结果作为高速列车穿行时的噪声源激励,利用SEA统计能量分析法对地下车站噪声进行数值分析,详细研究单车越行、中部交会和端部交会3种工况下的车站噪声特性。根据数值分析结果可得,两车端部交会时产生的站台噪声最大,站台总声压级最高可达80.11 dB,超过80 dB的标准规定,需要在站台处有针对性地进行降噪设计。最后,通过不同位置的竖井设计方案,分析地下车站噪声的辐射传播规律。该研究可为高速列车穿越机场综合交通枢纽所引起的类似站台噪声问题提供参考。

In order to study the station noise situation when a 300 km/h high-speed train passing through the airport underground station,the model of the underground station is established based on the statistical energy analysis(SEA)method,and the radiation noise of the underground station is studied.By carrying out the actual test on the noise of high-speed train,the sound power level spectra of the main noise source areas such as bogies and pantographs are obtained.The actual test results are used as the noise source excitation for high-speed trains passing through the station,and the station noise is calculated with SEA method.The station noise characteristics under the three working conditions of single train crossing,two trains meeting at the central and two trains meeting at the end of the station are analyzed in detail.The numerical analysis results show that the maximum station noise is generated when two trains meet at the end of the station,and the total sound pressure level of the station platform can be up to 80.11 dB,which exceeds the standard regulation of 80 dB.Therefore noise reduction design at the station platform is necessary.Finally,through designing shaft schemes in different positions,the radiation propagation rules of noise in underground station are analyzed.The study has provided a reference for analysis of similar station noise problem caused by high-speed trains crossing the airport comprehensive transportation hub.