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一、立项背景建筑排水管道产生的噪音是家庭中噪声的主要来源之一。根据《住宅设计规范》(GB50096-1999(2003年版)),住宅的卧室、起居室的允许噪声级(A声级)昼间应小于或等于50dBA,夜间应小于或等于40dBA。国外重点解决排水系统的排水能力问题,而没有把降低噪声作为重点内容来研究。目前,国际上对柱状材料排水管道的噪声检测标准,发布的只有欧洲
I. Background The noise generated by the construction drainage pipe is one of the main sources of noise in the home. According to “Residential Design Code” (GB50096-1999 (2003 edition)), the allowable noise level (A sound level) of residential bedrooms and living rooms should be less than or equal to 50dBA in daytime and less than or equal to 40dBA in nighttime. Foreign focus on the drainage system to solve the problem of drainage, rather than to reduce noise as a key content to study. At present, the international standards for the detection of noise in the column material drain pipe, released only in Europe