【作者】 秦勤； 段传波；

【Author】 QIN Qin;DUAN Chuan-bo;Beijing Institute of Labor Protection;

【机构】 北京市劳动保护科学研究所；

【摘要】 交通噪声污染已经成为城市面临的一个重要问题,两侧架立隔声屏障,是目前国内外应用比较成熟的降噪方法。传统声屏障不仅结构单调、耐久性较差,而且降噪效果欠佳,特别是中、低频吸声性能很差。选取5种声屏障顶端附加结构产品与普通直立型声屏障进行实验室插入损失对比研究,为声屏障优化设计提供定量依据及参考。更多还原

【Abstract】 The traffic-noise pollution has become a big problem which most of big cities have to face,and the noise barrier is one of the most important things for Traffic Noise control.The traditional barrier is not only simpler structure,less durability,but also noise reduction is ineffective,especially those of the poor performance of low-frequency sound absorption.This paper will research on insertion Loss of noise barrier and five kinds of noise-reduction unit at the edge of barrier.It will provide reference for optimum design of noise barrier.更多还原