【摘要】 根据城市轨道交通噪声时、空分布特点及污染规律,对轨道交通噪声评价量作了分析研究,提出了列车通过时的最大声级作为城市轨道交通噪声的评价量,并根据噪声时间分布特性曲线提出了与之相对应的等效声级简易计算方法。通过对上海轨道交通3号线沿线居民区的主、客观调查,得到主观烦恼度阈值和干扰睡眠阈值,提出了适用于我国城市轨道交通的环境噪声限值(建议)。更多还原

【Abstract】 According to the distributing features and polluting rules of traffic noise in terms of space & time and the study on the analysis of traffic noise evaluation,here we put forward the maxim sound grade when train is passing by as the assessment on urban mass transit.Based on the curve of noise distribution feature,we put forward a relative simplified calculation of equal sound grade.So we bring out the noise limitation suggestion which is suitable for urban mass transit environment by getting the agonizing value & disturbing sleep value from the investigation on residence area beside Line.3.更多还原