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首页> 外文期刊>Advances in civil engineering >Experimental Study on Cumulative Plastic Deformation of Coarse-Grained Soil High-Grade Roadbed under Long-Term Vehicle Load
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Experimental Study on Cumulative Plastic Deformation of Coarse-Grained Soil High-Grade Roadbed under Long-Term Vehicle Load

机译：长期车辆荷载下粗粒高等级路基累积塑性变形的试验研究

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摘要

According to the change characteristics of the subgrade moisture content and the mechanical calculation of several typical highways, the test scheme of the permanent deformation of coarse soil was formulated. The relationship between the permanent deformation of coarse- grained soil and the stress level, compaction degree, moisture content, and loading frequency was studied by cyclic loading triaxle testing. The results show that the permanent deformation of coarse- grained soil increases with the increase in partial stress and moisture content and decreases with the increase in compaction degree. The experimental data were fitted by the Tseng-Lytton model, and the correlation coefficients were 92%, which indicated that the model could be used to predict the permanent deformation of coarse soil. The relationships between the model coefficient and the moisture content and spring back modulus were obtained by the multiple regression method. Finally, the permanent deformation of the subgrade soil was calculated by using the layered summation method and a typical subgrade pavement structure.
机译：根据路基含水量的变化特征和几种典型公路的力学计算，制定了粗土永久变形的试验方案。通过循环荷载三轴试验研究了粗粒土的永久变形与应力水平，压实度，含水量和荷载频率之间的关系。结果表明，粗粒土的永久变形随局部应力和含水量的增加而增加，随压实度的增加而减小。用Tseng-Lytton模型拟合实验数据，相关系数为92％，表明该模型可用于预测粗土的永久变形。通过多元回归方法获得模型系数与含水量和回弹模量之间的关系。最后，采用分层求和法和典型的路基路面结构，计算了路基土的永久变形。

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  • 来源
    《Advances in civil engineering》 |2018年第10期|8167205.1-8167205.8|共8页
  • 作者

    He Zhongming; Liu Yaxin; Tang Haolong; Xing Yihang; Bian Hanbing;

  • 作者单位

    Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China;

    Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China;

    Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China;

    Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China;

    Univ Lorraine, Lab Study Microstruct & Mat Mech, F-57070 Metz, Lorraine, France;

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