针对高速铁路脉动风荷载对声屏障影响问题，基于有限元法建立插板式声屏障有限元模型进行动力响应分析。分析比较1跨和8跨声屏障模型自振特性，得出声屏障结构不会发生共振、但相邻声屏障板的振动会相互影响的结论。同时研究车速及立柱间距对结构动力响应的影响，结果表明结构最大位移和最大应力都会随车速、立柱间距的增大呈非线性增大，其中，立柱间距增大会使结构出现多个响应峰值。综合考虑分析结果、结构自重和经济因素，推荐插板式声屏障设计时立柱间距合适范围为1.6 m～2.0 m。%The influence of impulsive wind load on noise barriers in high-speed railroad was studied. The finite element model for the dynamic response analysis of the noise barrier structures with stop planks was established by means of the software of ANSYS. Through the study of the free-vibration characteristics of 1-span and 8-span finite element models of the noise barrier structure, it was found that the resonance of the sound barriers would not occur but the vibration of the adjacent noise barrier plates would interact mutually. Furthermore, the influences of train speed and the distance between upright columns on the dynamic responses of the noise barrier structures were investigated. The result shows that the maximum displacement and the maximum stress increase obviously and nonlinearly with the increasing of the train speed and the distance between the upright columns. Increasing of the distance between the upright columns can cause multi response peaks for the structure. Considering the results of analysis, the weight of the structure and economy requirement, the appropriate distance between the upright columns 1.6m~2.0m was recommended for the noise barrier structures with stop planks.
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