路堤稳定安全系数取值探讨

介绍了在山区路堤稳定性分析方法和土性指标的采用以及安全系数取值上比较混乱,没有统一尺度的现状,通过对安全系数实际采用的情况、各规范间安全系数的比较、计算方法及土性指标对稳定性计算结果的影响等方面的分析,在推荐地基土采用固结快剪指标的简化毕肖普法的基础上,提出了路堤稳定安全系数的推荐值。通过研究得出:根据不同地基条件、不同分析工况,路堤稳定安全系数取值为1.20～1.45。

Study of the safety factors of embankment in highway

Authors introduce the problem at present that the safety factor on the embankment in mountain area does not match with the calculation method of stability and strength index of soil. By comparison with safety factors used in different specifications and the results using different calculation methods,authors have analyzed and recommended the safety factor used for stability of embankment in highway. The recommended safety factors match the concise BISHOP method and its values are among the 1.2~1.45 according to the different character of base soil and the construction condition of draining.