| 自重作用下黄土高路堤密实状态变化分析 |
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| 引用本文： | 王云,何斌,张静波,周春梅,安静仪. 自重作用下黄土高路堤密实状态变化分析[J]. 路基工程, 2019, 0(5): 12-17. DOI: 10.13379/j.issn.1003-8825.2019.05.03 |
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| 作者姓名： | 王云 何斌 张静波 周春梅 安静仪 |
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| 作者单位： | 中交第二公路勘察设计研究院有限公司,武汉,430056;武汉工程大学,武汉,430073;武汉理工大学,武汉,430070 |
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| 基金项目： | 中交第二公路勘察设计研究院有限公司科技项目KJFZ-2015-077 |
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| 摘 要： | 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10 m，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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| 关 键 词： | 公路工程 高路堤 黄土填料 固结试验 压实度 空气率 饱和度 |
| 收稿时间： | 2019-11-08 |
Analysis of Dense State Change of Loess High Embankment under Its Own Weight |
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| Abstract: | Through typical loess consolication test the change features of the dense state indicators of the soil in different depth, such as compactness, air rate and saturation, were calculated and analyzed. It was concluded that, the compactness grew in function of power with the overburden height which increased every 10 m, the compactness of underlying loess in the embankment increased by about 0.8%~1.6% and the slope compactness by about 0.5%~0.8%; the air rate of loess filler for high embankment reduced and the saturation grew in function of power with the overburden height; the thicker the overburden, the greater the gravity stress and the higher the compactness of loess filler therein; at the position 20 m below the pavement, the compactness in conventional high embankment after the construction increased from 93.0% to 95.1%~96.1%. |
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