| 高填土路堤预抛高分析计算 |
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| 引用本文： | 吴俊强,刘朝权,贺冠军.高填土路堤预抛高分析计算[J].公路,2005(9):87-91. |
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| 作者姓名： | 吴俊强 刘朝权 贺冠军 |
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| 作者单位： | 广东粤赣高速公路有限公司,河源市,517000;黑龙江大学建筑学院,哈尔滨市,150086;河海大学岩土所,南京市,210098 |
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| 摘 要： | 通过分析碾压机械压实过程中产生的附加应力，确定了分层碾压土体所具有的前期固结应力；通过土水特征曲线试验和渗透试验，按照渗透系数折减的方法确定了非饱和土的固结系数，按照饱和土的一维固结理论近似计算了非饱和土的固结过程；按照自重应力大于前期固结应力的原则计算填土路堤的再压缩沉降，结合固结计算的结果估计了高填土路堤的后期沉降，提出了不同填土高度、使用不同碾压机械的高填方路堤的预抛高。
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| 关 键 词： | 高填土路堤 前期固结应力 非饱和土 再压缩 预抛高 |
| 文章编号： | 0451-0712（2005）09-0087-05 |
| 收稿时间： | 2005-08-12 |
| 修稿时间： | 2005-08-12 |
Analysis and Calculation of Height with Allowance of Soil Embankment |
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| WU Jun-qiang,LIU Chao-quan,HE Guan-jun.Analysis and Calculation of Height with Allowance of Soil Embankment[J].Highway,2005(9):87-91. |
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| Authors: | WU Jun-qiang LIU Chao-quan HE Guan-jun |
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| Institution: | 1. Guangdong Provincial Yue-Gan Expressway Co. Ltd. , Heyuan 51700, China; 2. Construction College of Heilongjiang University, Harbin 150086, China; 3. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | The preconsolidation stress is defined for compaction soil in layers on the basis of analyzing additional stress initiated by the compaction machines. The unsaturated soil consolidation modulus is defined with permeability modulus reduction method based on the soil-water characteristic curve tests and permeability tests. The unsaturated soil consolidation is approximately calculated with one-dimensional consolidation theory. For geostatic stress is greater than preconsolidation stress, the recompression settlement is calculated. The later settlement of high fill embankment is estimated based on the calculation and the height with allowance is put forward of high fill embankment in different heights of fill and compacting machines. |
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| Keywords: | high filled soil embankment preconsolidation stress unsaturated soil recompression height with allowance |
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