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首页> 外文期刊>Geosynthetics International >Experimental study on vibration reduction by using soilbag cushions under traffic loads
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Experimental study on vibration reduction by using soilbag cushions under traffic loads

机译：交通荷载下泥沙垫减振的实验研究

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摘要

The dynamic behaviour of a subgrade with soilbags (filled with different materials) under traffic loads was investigated through a series of laboratory experiments. Three spaced hydraulic jacks with phase-shifted excitations were used to simulate moving loads. Different materials, namely gravel, coarse sand, and fine sand, were filled into the subgrade soilbags underneath the ballast. Equations of the peak acceleration and effective soil pressure with respect to the subgrade depth were derived to obtain an insight into the subgrade-load interactions. In addition, the effects of subgrades with and without the soilbags on the vibration and settlement were investigated and compared. The experimental results show that the peak acceleration decreases linearly with increasing depth from the vibration source, while the attenuation of the effective soil pressure increases with increasing distance from the vibration source. The settlement in reinforced subgrade is much smaller than that in unreinforced subgrade under three-jack excitation.
机译：通过一系列实验室实验研究了在交通负荷下装有土袋（装有不同材料）的路基的动态行为。具有相移激励的三个隔开的液压千斤顶用于模拟移动负载。将不同的材料（即砾石，粗砂和细砂）填充到道ast下方的路基土包中。推导了相对于路基深度的峰值加速度和有效土压力方程，以了解路基-荷载相互作用。此外，还研究并比较了带和不带土袋的路基对振动和沉降的影响。实验结果表明，峰值加速度随着距振动源深度的增加而线性减小，而有效土压力的衰减随距振动源距离的增加而增大。在三千斤顶激励下，加筋路基的沉降远小于未加筋路基。

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  • 来源
    《Geosynthetics International》 |2018年第3期|322-333|共12页
  • 作者

    Ding G. Y.; Wu J. L.; Wang J.; Fu H. T.; Liu F. Y.;

  • 作者单位

    Wenzhou Univ, Coll Civil Engn & Architecture, Wenzhou 325035, Peoples R China;

    Wenzhou Univ, Coll Civil Engn & Architecture, Wenzhou 325035, Peoples R China;

    Wenzhou Univ, Coll Civil Engn & Architecture, Wenzhou 325035, Peoples R China;

    Wenzhou Univ, Coll Civil Engn & Architecture, Wenzhou 325035, Peoples R China;

    Shanghai Univ, Dept Civil Engn, Shanghai 200444, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Geosynthetics; Soilbag; Subgrade; Railway; Dynamic behaviour;

    机译：土工合成材料;气囊;路基;铁路;动态行为;

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