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Review of recent progress in studies on noise emanating from rail transit bridges

机译:回顾轨道交通桥梁噪声研究的最新进展

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摘要

Abstract In recent years, there has been rapid growth of Chinese rail transit networks. Many of these networks require elevated bridges. This results in a bridge-borne noise source, which occurs in addition to the main noise source (i.e., wheel–rail interactions). Bridge-borne noise is attracting increasing attention because of its low-frequency noise characteristics. This review paper first analyzes the space distribution, spectral characteristics, and sound pressure levels of noise radiated by all - concrete, steel–concrete composite, and all - steel bridges, mainly according to experimental studies. Second, this paper reviews existing theoretical prediction models of noise emanating from bridges: the semianalytical method, the Rayleigh integral method, the boundary element method, and statistical energy analysis. Several case studies are reviewed, and their results are discussed. Finally, according to the results of the current review, the main factors affecting bridge-borne noise are analyzed, several noise reduction measures are proposed for different types of bridges, and their effectiveness is demonstrated.
机译:摘要近年来,中国的轨道交通网络发展迅速。这些网络中许多都需要高架桥。这会导致产生桥式噪声源,该噪声源会与主要噪声源(即轮轨相互作用)一起出现。桥式噪声由于其低频噪声特性而受到越来越多的关注。本文主要根据实验研究,首先分析全混凝土,钢混凝土组合件和全钢桥梁辐射的噪声的空间分布,频谱特性和声压级。其次,本文回顾了现有的桥梁噪声理论预测模型:半分析法,瑞利积分法,边界元法和统计能量分析。审查了几个案例研究,并讨论了其结果。最后,根据目前的评估结果,分析了影响桥梁噪声的主要因素,针对不同类型的桥梁提出了几种降噪措施,并证明了其有效性。

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