城市轨道交通减振降噪分析及工程措施

Analysis of Reducing Vibration and Noise of Urban Mass Transit and Engineering Measures for Them

研究目的:城市轨道交通引起的环境振动和噪声污染问题日益突出,需引起高度重视。因此,基于环境评价报告并结合工程实际,对城市轨道交通进行减振降噪设计显得十分重要,本文结合上海地铁2号线东延伸工程,通过研究与分析提出轨道减振降噪的设计新思路及工程措施。研究结论:研究结果表明,合理选择轨道结构和结构参数是减振降噪的主要措施,轨道结构的刚度设计是减振降噪型轨道结构设计的重点,研发新型减振降噪轨道结构是未来的发展方向。

Research purposes： Vibration and noise pollution caused by urban mass transit is increasingly becoming a prominent problem, so it is necessary to pay attention to them. Therefore, the design of reducing noise and vibration based on the environmental assessment report and the actual engineering is very important. This paper, combined with the east extension project of Line 2 of Shanghai Metro, puts forward the new design concept on and the engineering measures for reducing the track vibration and noise of urban mass transit through the research and analysis. Research conclusions：The research results show that the reasonable choice of track structure and structural parameters are the main measures for reducing the vibration and noise, the stiffness design of the track structure is the focal point of track design, and research and development of vibration and noise reducing track structure is the development direction in future.