基于Cadna/A噪声预测的某拟建养老院选址合理性研究OA

Under the background of China's aging,the transformation of the elderly care service system and the poor acoustic environment of some elderly care facilities,a proposed nursing home was taken as an example in this study to evaluate the rationality of the acoustic environment of its location.According to the design data and field investigation,a Cadna/A noise prediction model was established and the source intensity information was input for prediction and analysis.The model was verified by the noise status monitoring results.The results showed that due to the superposition effect of noise from the existing Dazhou-Chengdu Railway and the Chengdu-Dazhou-Wanzhou Railway under construction,the daytime and nighttime noise levels of the proposed nursing home exceeded the limit requirements for functional areas in the type Ⅱ acoustic environment in the Environmental Quality Standard for Noise,especially in some floors of Building 1 and Building 3,and the phenomenon of noise exceeding the standard was prominent.In addition,even if the noise reduction measures such as sound barriers are taken,it is still difficult to meet the limit requirements for class 2 zone in the Environmental Quality Standard for Noise(GB 3096-2008).It is suggested to re-select the compliant area 337 meters away from the railway to ensure the sound environment quality of nursing homes.This study can provide reference for the site selection of noise-sensitive buildings in similar scenes.