轨道交通地下线振动环境影响及减振措施分析

Analysis of Environmental Influence of Underground Line Vibration in Rail Transit and Vibration Reduction Measures

随城市规模不断扩张,轨道交通工程进入高速发展时期。由于地上空间限制,多采取轨道交通地下线作为疏解交通拥堵的重要手段。然而列车在运行过程中产生的振动及二次结构噪声会对沿线居民的生活、工作带来一定影响。本文根据《环境影响评价技术导则城市轨道交通》(HJ 453—2018)振动环境影响评价范围,运用《地铁噪声与振动控制规范》(DB11/T 838—2019)振动预测模型对北京地铁某区间沿线环境保护目标进行振动及二次结构噪声预测,并就预测结果与环评阶段结果进行校核,分析变化原因并提出技术可行、经济合理的减振措施。

With the continuous expansion of the scale of big cities,rail transit engineering has entered a period of rapid development.Due to the limitation of the space above ground,nowadays the urban rail transit underground line is adopted as an important means to relieve traffic congestion.However,the vibration and secondary structure-borne noise generated during the train operation will bring a certain impact on the life and work of residents along the line.According to the scope of vibration environmental impact assessment of Technical Guidelines for Environmental Impact Assessment Urban Rail Transit(HJ 453—2018),this paper uses the vibration prediction model in The Code for Subway Noise and Vibration Control(DB11/T 838—2019) to predict vibration and secondary structural-borne noise of environmental protection targets along a certain section of Beijing subway.The prediction results and the results of the EIA stage are checked,the reasons for the changes are analyzed,and the technically feasible and economically reasonable vibration reduction measures are put forward.