柔性鋪面行車噪音減輕對策之研究

Mitigation Strategies for Traffic Noise on Flexible Pavements

沈得縣(Der-Hsien Shen) ； 吳佳銘(Chia-Ming Wu) ； 徐茂濱(Mau-Pin Hsu)

《中國土木水利工程學刊》 20卷4期 (2008/12) Pp. 555-571

https://doi.org/10.6652/JoCICHE.200812_20(4).0008

摘要

本研究係經由鋪面現地噪音量測、試驗室鋪面試體吸音係數量測及交通噪音軟體模擬等方式，以探討鋪面型式及車輛管制方式對柔性鋪面行車減噪成效之影響，並研擬各種行車噪音減輕對策。研究結果顯示；車輛、車速、輪胎及鋪面型式等均會影響行車噪音之大小。在鋪面型式方面，柔性鋪面可採用鋪面孔隙化、鋪面紋理粗質化、鋪面柔性化及孔隙性鋪面雙層化等方式，而達成減輕行車噪音之目的。在車輛管制方面，可採用管制重型車車速及管制車流量而減輕行車噪音。都會區若採用管制重型車車速及鋪設柔性減噪鋪面，則其行車噪音減輕之效果較裝設隔音牆佳。

關鍵字

噪音減輕對策 ； 輪胎鋪面噪音 ； 吸音係數 ； 交通噪音模擬

並列摘要

This paper proposes the strategies for mitigating traffic noise based on the results from in situ tire/road noise measurements, laboratory experiments and software simulation. To assess the performance of noise mitigation, the factors related to tire/pavement noise such as types and materials of the flexible pavements are discussed. Field test results indicate that traffic noise is affected by vehicle types, vehicle speeds, types of tires and types of flexible pavements. The laboratory test results show that pavement materials with porosity, macro-texture, flexibility and doublelayer can achieve the object of noise mitigation. Simulation results indicate that traffic noise can also be reduced considerably by lowering the speed limit of heavy vehicles, as well as by controlling volumes of traffic flow. In general, limiting the speeds of heavy vehicles and utilizing lownoise flexible pavements are more effective than just setting up noise barriers in urban areas as far as traffic noise mitigation is concerned.

並列關鍵字

noise mitigation strategies ； tire/pavement noise ； sound absorption coefficient ； traffic noise simulation