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根据刚性骨架多孔材料的微观理论具体分析了孔隙率、流阻率、扭曲因子和初形因子对低噪声沥青路面声学特性的影响.同时,讨论了路面厚度、双层路面结构的影响;也估算了低噪声沥青路面对轮船与路面相互作用所产生的单极子声源的影响.分析表明,当厚度大于40mm时,孔隙率是决定路面声学特性的主要因素;双层路面的声学特性基本上由面层结构决定.低噪声沥青路面对单机子声源的降噪作用在3dB左右.
According to the microscopic theory of rigid skeleton porous materials, the influence of porosity, flow resistance, twisting factor and initial shape factor on acoustic properties of low-noise asphalt pavement is analyzed in detail. At the same time, the influence of pavement thickness and double- The influence of low noise asphalt pavement on monopole sound source caused by the interaction between ship and pavement is analyzed.The results show that the porosity is the main factor that determines the acoustic properties of pavement when the thickness is more than 40mm.The basic acoustic properties of double pavement On the surface structure of the decision.Low-noise asphalt pavement on the single-machine sonar noise reduction role in the 3dB or so.