高速铁路双排封闭式PVC空井减隔振措施的模型试验研究

Research on the Model Test of Vibration Reduction Measure by Enclosed PVC Empty-wells of Double-row on High-Speed Railway

高速铁路是一种大运量、安全、效率高、能耗少的运输方式,对国家的发展做出了巨大的贡献,但与此同时,由高速铁路给周边环境带来的不良振动和噪声环境污染等一直备受大家的关注。针对以上的问题,本文通过进行1g条件下双排封闭式PVC空井减隔振措施室内模型试验,其直径、深度、排间距等因素对双排封闭式PVC空井减隔振效果进行分析。结果表明:双排封闭式PVC空井深度是影响减隔振效果的主要因素,随着其深度增加减隔振效果逐渐增强;而双排封闭式PVC空井直径和排间距对减隔振效果影响不够明显;综上所述确定了双排封闭式PVC空井减隔振效果的优越性,为以后的实际工程提供参考。

High-speed railway is a high efficient and security way of transporation which is large-capacity and less energy consumption.High-speed railway has made a great contribution to the national economic development.However,environmental pollution caused by its noise and vibration gains more and more attention.Aiming at these problems,this dissertation which is based on the model test of vibration reduction by enclosed PVC emptywells of double-row in 1 g condition focuses on studying the effect of vibration reduction measures and factors,including its diameter,depth,width and the row distance of the empty well.The results show that： the depth of enclosed PVC empty-wells of double-row is the major influencing factor,with the increase of the depth,the effect of the vibration reduction is gradually enhanced; however,the width or the row distance of the empty well has little effect on vibration reduction.In conclusion,the advantages of enclosed PVC empty-wells of double-row is proved on the vibration reduction,which also provide the reference for practical projects in the future.