CAJ | 학술논문

为了研究轨道交通列车不同运行速度状态下的噪声水平，利用同济大学轨道交通综合试验线对轨道交通列车运行时辐射噪声进行测试与分析，得出各监测点在不同运行速度下的噪声强度和频谱特性。结果表明：在车速小于47 km·h-1范围内，随着列车速度的增加，各监测点噪声值不断增大，基本呈线性增长；在4种不同车速工况下，距离噪声源越近，高度越高，噪声值越大；相反，距离噪声源越远，高度越低，噪声值越小。在不同运行速度下，各测点的主峰频率都在800 Hz左右，而噪声能量的主要分布范围随车速的提高而有规律地变化，随着行驶速度的提高，噪声能量的主要分布范围逐渐向800 Hz主峰频率趋近。研究结果可为轨道交通噪声措施的制定及噪声预测提供数据基础与科学依据。
위료연구궤도교통열차불동운행속도상태하적조성수평，이용동제대학궤도교통종합시험선대궤도교통열차운행시복사조성진행측시여분석，득출각감측점재불동운행속도하적조성강도화빈보특성。결과표명：재차속소우47 km·h-1범위내，수착열차속도적증가，각감측점조성치불단증대，기본정선성증장；재4충불동차속공황하，거리조성원월근，고도월고，조성치월대；상반，거리조성원월원，고도월저，조성치월소。재불동운행속도하，각측점적주봉빈솔도재800 Hz좌우，이조성능량적주요분포범위수차속적제고이유규률지변화，수착행사속도적제고，조성능량적주요분포범위축점향800 Hz주봉빈솔추근。연구결과가위궤도교통조성조시적제정급조성예측제공수거기출여과학의거。
Based on the test and analysis of the rail traffic noise produced by the vehicles running on the testing line in Tongji University, this paper studies noise levels of rail traffic vehicles in different conditions, and the noise intensity and spectrum characteristics are recorded accordingly. The results indicate that the noise value at each monitoring point increases instantly as the velocity of the vehicle climbs up when the speed is below 47km/h, and it almost tends to be a linear increase, specifically, in spite of the four different conditions of vehicle speed, the noise value increases unanimously as the distance between the monitoring point and the noise producer decreases and the height increases, and vice versa. At different speeds, all the peak frequencies from each monitoring point are around 800 Hz while the main range of the noise energy varies regularly as the vehicle speed changes, that is, the main range of the noise energy approaches 800 Hz gradually with the increasing speed of the vehicle. The re-sults may provide the statistical and scientific basis for the measures of controlling the rail traffic noise and its pre-diction.