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根据影响浆砌块石挡土墙边坡稳定性的主要控制变量:挡土墙的垂直度i、挡土墙高度h、填料的内摩擦角φ、墙后边坡土的重度γ、土对挡土墙基底的摩擦系数μ、土对挡土墙墙背的摩擦角δ等6个因素变量,利用正交设计原理优化试验设计方案,结合库仑理论与力的多边形法,分析计算浆砌块石挡土墙边坡的安全系数,最后用尖点突变理论的突变级数法进一步判断边坡的稳定性。研究结果表明:影响挡土墙边坡稳定性的6个主要控制变量因素的主次关系为h>φ>δ>γ>i>μ;在分析挡土墙边坡稳定性时,采用突变级数法进行计算判断,可以直观地判断边坡的稳定情况,从而弥补工程中运用传统的最小安全系数法进行判断出现的模糊不确定的情况。
According to the main control variables affecting the stability of the masonry rock retaining wall slope: the verticality of the retaining wall i, the height h of the retaining wall, the internal friction angle φ of the filler, the severe γ of the slope soil behind the wall, The friction coefficient μ of the soil wall base and the friction angle δ between the soil and the back wall of the retaining wall are optimized. The orthogonal design principle is adopted to optimize the experimental design scheme. Combining Coulomb theory and force polygon method, The safety factor of the retaining wall slope, and finally using the sudden change of cusp catastrophe theory to further determine the slope stability. The results show that the principal and secondary relationships of the six main control variables that affect the stability of the retaining wall slope are h> φ> δ> γ> i> μ. When analyzing the stability of the retaining wall, Number method to calculate the judge, you can visually determine the stability of the slope, so as to make up for the project using the traditional minimum safety factor method to determine the fuzzy situation appears fuzzy.