自重作用下黄土高路堤密实状态变化分析
Subgrade Engineering(2019)
Abstract
通过典型黄土固结试验,计算分析了黄土高路堤不同深度处路基土压实度、空气率、饱和度等密实状态指标的变化特征.得出:压实度增量随上覆填土高度呈幂函数增长关系,上覆填土每增加10m,路堤内部下伏黄土压实度有0.8%~1.6%左右的上升幅度,路堤边部压实度上升0.5%~0.8%左右;高路堤中黄土填料空气率随上覆填土高度呈幂函数下降,饱和度随上覆填土高度呈幂函数增长;路基上覆填土越厚,自重应力越大,路堤内部黄土填料压实度越高,在路面以下20 m处,常规高路堤在施工结束后内部压实度从93.0%上升至95.1% ~96.1%.
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