地铁环境影响评价中轨道隔振措施应用效果研究

Application Effect Analysis of Track Vibration Isolation Measures in Subway Environmental Impact Assessment

通过研究北京、上海和广州地铁运营线路所采用的轨道隔振措施对环境振动的隔振效果,对比各厂家产品的轨道隔振性能,澄清了隔振性能在频域分析上的模糊概念,分析各种轨道隔振措施在不同频率下的隔振效果差异,提出了城市轨道交通环境影响评价中各种轨道隔振措施按一般、中等、较高及特殊隔振措施的划分原则和各等级隔振效果取值范围的建议。

The effects of the track vibration isolation measures on environmental vibration isolation in Beijing, Shanghai and Guangzhou metro operation lines were studied. The track vibration isolation performances of products by different manufacturers were compared. Fuzzy concepts in frequency domain analysis of the anti-vibration performance were clarified. The differences of the isolation effects in different frequencies of a variety of track vibration measures were analyzed. The principle of classifying various track vibration isolation measures according to the general, medium, high and special isolation measures in the city orbit traffic environmental impact assessment was proposed, and the recommendations on the valuing scopes of various grades of vibration isolation effects were given.