市域轨道交通高架噪声影响因素与降噪效果分析
王朝亮邱海慧
Analysis of Influencing Factors and Noise Reduction Effects of Viaduct Noise in City Rail Transit
WANG ChaoliangQIU Haihui
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作者信息:温州市铁路与轨道交通投资集团有限公司，325029，温州
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Affiliation:Wenzhou Mass Transit Railway Investment Group Co., Ltd., 325029, Wenzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.01.058
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中图分类号/CLCN:U270.1+6∶U239.5
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栏目/Col:应用技术
摘要:
［目的］为市域轨道交通高架噪声的控制和降噪措施应用提供建议。［方法］基于车辆-轨道动力学、轮轨振动声辐射和高架振动声辐射理论，建立市域轨道交通高架噪声预测模型，分析车速、与高架桥的距离、高架桥类型以及声屏障等因素对市域轨道交通高架噪声的影响。［结果及结论］车速>100km/h时，相比车速<100km/h情况，高架噪声增加量为1.8~5.5dB(A)。单箱单室箱梁、单箱双室箱梁、U型梁引起的高架噪声峰值频段为50~80Hz，其中峰值频率为63Hz。在距离轨道中心线7.5m位置，单箱双室箱梁在各高度点的噪声相对最低，单箱单室箱梁、U型梁梁侧的各高度点噪声比单箱双室箱梁的高出量分别为1.0~4.1dB(A)和5.2~10.6dB(A)。近轨声屏障高度高于轨面0.90m及以上时，可保证在500Hz频段有7.0dB(A)的降噪效果，在630Hz以上频段也均能保持明显的降噪效果。
Abstracts:
［Objective］ It is aimed to provide advice for viaduct noise control in city rail transit and application of noise reduction measures. ［Method］ Based on theories of vehicle-track dynamics, wheel-rail vibration radiation, and viaduct structure vibration radiation, a prediction model for viaduct noise in city rail transit is established. The influence of factors such as train speed, distance from viaduct structure, viaduct type, and noise barriers on city rail transit viaduct noise is analyzed. ［Result & Conclusion］ When train speed exceeds 100 km/h, the viaduct noise increases by 1.8-5.5 dB(A) compared to train speeds below 100km/h. For single-cell single-box girders, single-cell double-box girders, and U-shaped girders, the peak frequency range of viaduct noise is 50-80 Hz, with a peak frequency at 63 Hz. At a distance of 7.5 m from the track centerline, the single-cell double-box girder demonstrates the lowest noise levels at all heights, whereas noise levels at the girder sides of single-cell single-box girders and U-shaped girders are higher by 1.0-4.1 dB(A) and 5.2-10.6 dB(A), respectively, compared to single-cell double-box girders. Near-track noise barriers with heights of 0.90 m or more above the track surface ensure a noise reduction effect of 7.0 dB(A) at 500 Hz frequency band, with noticeable noise reduction effects maintained across frequencies above 630 Hz.
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