快速列车对长沙高架车站的振动与噪声模拟分析

列车运行产生的二次噪声与振动已经成为轨道交通系统所面临的主要环境问题,而目前相关研究主要集中于民用建筑与桥梁结构,对火车站等大型结构的研究鲜见于文献.本文针对快速列车运行时对长沙高架车站候车厅内产生的振动与二次结构噪声问题,提出了一种整合预测分析方法.该方法基于高架车站振源—传播—响应的有限元模型,通过谱有限元法来实现对二次噪声的精确预测.分析结果表明了该整合预测分析方法的有效性.

Simulation of Vibration and Structure-borne Noise Due to High-speed Train through Changsha Station

Structure-borne noise and vibration induced by train operations are two major environmental problems faced by rail transit systems.Current researches mainly focused on civil architectures and bridge structures,but it is rare for large structures such as railway stations in the literature.Within this framework,this paper presented an integrated predictive analytics to simulate the vibration and structure-borne noise due to high-speed train through Changsha station.This analytics obtains an accurate prediction of structure-borne noise by considering the fluid-structure interaction,based on excitation-spread-response finite element model of elevated station.The results show that this integration of predictive method is very effective.