CAJ | 학술논문

高架轨道交通的运行噪声影响沿线居民的正常工作和休息，建立一套适用于高架轨道交通噪声辐射的模型，有助于在建造轨道交通线之前合理的预估由于轨道交通造成的噪声辐射影响及传播特性，从而帮助改进设计方案。建立列车辐射噪声模型的首要任务是获得列车的噪声辐射特性。为达成此目的，采用波束形成方法重建列车外侧面的波束输出能量分布图，并利用参考传声器将波束输出能量修正为声压级，获得定量的声压级分布结果。运动声源波束形成方法结合能量修正方法，可以定量的获得列车辐射噪声声压级分布结果，得到比传统波束形成方法精确的结果。该方法用于重建某高架线轨道交通列车的噪声声级分布，结果与实际声场接近。试验分析表明方法可以用于高架轨道噪声辐射模型的定量分析。
고가궤도교통적운행조성영향연선거민적정상공작화휴식，건립일투괄용우고가궤도교통조성복사적모형，유조우재건조궤도교통선지전합리적예고유우궤도교통조성적조성복사영향급전파특성，종이방조개진설계방안。건립열차복사조성모형적수요임무시획득열차적조성복사특성。위체성차목적，채용파속형성방법중건열차외측면적파속수출능량분포도，병이용삼고전성기장파속수출능량수정위성압급，획득정량적성압급분포결과。운동성원파속형성방법결합능량수정방법，가이정량적획득열차복사조성성압급분포결과，득도비전통파속형성방법정학적결과。해방법용우중건모고가선궤도교통열차적조성성급분포，결과여실제성장접근。시험분석표명방법가이용우고가궤도조성복사모형적정량분석。
The noise radiated by running trains on viaducts seriously influences people living or working along rail-lines.Optimizing the rail-line layout based on a train noise model alleviates the bad influence in advance.The characteristics of running train noise are obtained ahead for building the train noise model.Here,beam-forming combined with sound pressure level modification was presented for quantitively determining the distribution of sound pressure level on a train profile.The reference microphones were set in the reconstructing plane to modify the sound pressure level with the presented method.Subsequently,the characteristics of a running train noise were obtained quantitively.The method was applied to reconstruct the sound field induced by a running train on viaducts.The results agreed well with those of the real sound field.The method was verified with tests to be suitable for analyzing the train noise quantitively.