冻融循环作用下路基边坡稳定性变化研究

为研究冻融循环作用对路基边坡稳定性的影响，建立了路基变形场及应力场的三维数值计算模型，并应用强度折减法求解路基边坡在冻融循环作用后的安全系数，分析了冻融作用范围内路基应力场和变形场的分布规律，得出冻融循环作用次数与路基边坡安全系数的关系。结果表明:冻融循环会改变路基边坡土体的力学性质，从而影响路基边坡的稳定性。路基边坡受到的冻融循环作用是引起路基病害的直接原因，反复的冻融循环作用将引起路基边坡稳定性的降低。

Study on Subgrade Slope Stability under the Effect of Freeze-Thaw Cycle

In order to study the effect of freeze-thaw cycle on subgrade slope stability,three-dimensional numerical model for subgrade deformation field and stress field is established and the safety factor of subgrade slope under the effect of freeze-thaw cycle is determined using strength reduction method in this paper.Then the distribution law of subgrade deformation field and stress field within the range of freeze-thaw action has been analyzed and the relationship between the number of freeze-thaw cycles and sub...