我国城市轨道交通环境振动影响的研究现况

Overview on current research of environmental vibration influence induced by urban mass transit in China

明确给出了交通环境振动的一般强度、频率与传播特征.分析了城市轨道交通环境振动问题的12个主要影响因素,总结了目前我国正在研究的8个主要方面和面临的3个主要问题,即行业标准与评价方法、振动传播与辐射噪声的预测以及减隔振技术工程的实施.作为当前城市轨道交通发展最快、规模最大的国家,我们必须开展交通环境振动相关标准的基础性研究工作,完善相应的规范编制;深入开展列车振动、道路交通振动振源输入谱及其传播计算方法的理论研究工作,结合大数据及云计算技术,推动交通环境振动预测的可视化进程;促进轨道交通行业在项目可行性研究、初步设计及工程实施的全过程中,将交通环境振动的综合减振降噪优化工作纳入其方案规划、线路布局、产品准入、结构设计以及工后验收评估等关键工作环节中.

The definition of traffic-induced environmental vibration is proposed in this paper. 12 main factors of environmental vibration by urban mass transit are analyzed, and eight current research topics in this field in China are summarized. Three key problems needed to break through in the further research are presented, which are the standards of allowable vibration and its evaluation methods, the prediction of vibration transmission and radiated noise and the implementation of vibration mitigation technology. The authors believe that the following researches must be carried out at present in China, where the urban mass transit has the fastest development and the largest scale in the world： the fundamental research on standards of traffic induced environmental vibration, the source spectra of train and road traffic induced vibrations and the visual prediction based on big data and cloud computing technology. And the comprehensive design of mitigation of vibration and noise should be considered in scheme, line plan, product access, structure design, check and assessment of mitigation effect after operation and so on in the course of feasibility study, scheme design, and project implementation.