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Permanent deformation of silt subgrade under vehicle load
Author(s): 
Pages: 16-22
Year: Issue:  3
Journal: Journal of Nanjing University of Technology(Natural Science Edition)

Keyword:  行车荷载路基竖向应力永久变形;
Abstract: 为探讨行车条件下沥青路面粉土路基的永久变形规律,首先依据弹性层状体系理论计算不同路面结构类型、不同车辆轴质量下,沥青路面路基的竖向附加应力分布特征;然后通过动三轴试验,分析了粉土路基土在重复荷载作用下的累积塑性应变与动应力大小、土体物理状态的关系,并建立粉土路基土的循环累积塑性应变预测模型;基于上述理论分析和试验结果,探讨行车荷载作用下粉土路基的永久变形.研究表明:路基永久变形随轴栽作用次数增加而...
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