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路堤或堤坝工程中土工合成材料加固软土地基得到广泛应用,但其计算方法仍有不足之处。从极限分析的角度来研究,引入滑移线法来改进极限分析上限法,推导出一种新的地基极限分析方法,并基于推导的极限承载力计算公式,把路堤破坏宽度作为变量,求解出路堤极限高度。工程实例对比分析表明,路堤极限高度计算结果与实测结果相差不大。其研究结论为软土地基路堤设计提供了一个新的和有效的方法。
Embankment or embankment project geosynthetics reinforced soft soil foundations have been widely used, but its calculation methods are still inadequate. From the point of view of limit analysis, the slip-line method is introduced to improve the upper bound method of limit analysis. A new method of foundation limit analysis is derived. Based on the derived formula of ultimate bearing capacity, the width of embankment damage is taken as a variable to solve the problem Dike limit height. The comparative analysis of engineering examples shows that the calculation result of embankment limit height is not much different from the measured result. The conclusion of the study provides a new and effective method for embankment design in soft soil.