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利用可靠度理论,结合工程实例,对加筋土路堤整体稳定可靠指标进行分析。认为设计参数均值与变异性对加筋土路堤整体稳定都有不同程度的影响;当设计参数数量有限而无法准确确定其所服从的概率模型时,建议假定填土的重度服从极I型分布,而粘聚力、内摩擦角和筋材拉力服从正态分布,所得到的结果偏于安全;另外对筋材层数、间距和整体稳定计算模式与加筋土路堤整体稳定的可靠指标之间的关系进行了探讨,所得出的结论可为加筋土路堤设计提供参考。
Using the theory of reliability and engineering examples, the overall stability and reliability of reinforced embankment is analyzed. It is considered that the mean and variability of design parameters have different degrees of impact on the overall stability of embankments. When the design parameters are limited and can not be accurately determined, While the cohesion, internal friction angle and tension tendon obey the normal distribution, the results obtained are biased to safety. In addition, the relationship between the number of layers, spacing and overall stability calculation mode and the integral index of stability of reinforced embankment The conclusion of the conclusion can provide reference for the design of reinforced embankment.