| 在软土地基上有反压护道路堤及堤坝的稳定计算 |
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| 引用本文： | 张玉成,杨光华,胡海英,张有详.在软土地基上有反压护道路堤及堤坝的稳定计算[J].岩土力学,2007,28(Z1):844-848. |
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| 作者姓名： | 张玉成 杨光华 胡海英 张有详 |
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| 作者单位： | 1.武汉大学 土木建筑工程学院，武汉 430072；2.广东省水利水电科学研究院，广州 510610；3.郑州大学 土建学院，郑州 450002 |
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| 基金项目： | 广东省水利厅科技计划项目（No. 粤水计[2005]205）。 |
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| 摘 要： | 用反压护道对软土路基进行处理，是保证路堤及堤坝稳定常用的工程措施之一。而目前较常使用的极限平衡法在对有反压护道的路堤及堤坝稳定性进行分析计算时，其结果及搜索到的滑动面位置和形状与实际差别较大。通过强度折减分析了不同工况下有反压护道的路堤的稳定性，并与极限平衡法进行了对比，结果表明，强度折减法的分析结果更接近工程实际情况。利用早期得出的复杂荷载作用下路堤的填土极限高度计算公式，实现用填土极限高度控制路堤的稳定性。最后，以工程实例验证了强度折减和填土极限高度判断有反压护道路堤稳定性是切实可行的。
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| 关 键 词： | 软土地基 反压护道 路堤 稳定性 |
| 收稿时间： | 2007-04-10 |
Stability study of embankment or dam with back berm on soft soil foundation |
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| ZHANG Yu-cheng,YANG Guang-Hua,HU Hai-ying,ZHANG You-xiang.Stability study of embankment or dam with back berm on soft soil foundation[J].Rock and Soil Mechanics,2007,28(Z1):844-848. |
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| Authors: | ZHANG Yu-cheng YANG Guang-Hua HU Hai-ying ZHANG You-xiang |
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| Institution: | 1.School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China; 2.Guangdong Research Institute of Resources and Hydropower, Guangzhou 510610, China; 3. School of Civil Engineering, Zhengzhou University, Zhengzhou 450002, China |
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| Abstract: | Putting back berm on the soft soil foundation is a method of ensuring the stability of the embankment or dam. The limit equilibrium method is commonly used to analyze the stability of embankment or dam with back berm, but there exists a difference between the results and the critical slope surface exist a difference according to the limit equilibrium method and its real value. In this paper, the stability of embankment with back berm under different working conditions is analyzed with nonlinear FEM strength reduction method. The calculation results show that its results are consistent with the real condition accorded well to the traditional limit equilibrium method. The stability of embankment under complicated loads may be judged by maximum height of the embankment. Actual engineering example shows that the strength reduction FEM and maximum height of the embankment were feasible to assess slop stability. |
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| Keywords: | soft soil foundation back berm embankment stabilization |
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