【摘要】 对公路土质边坡潜在滑坡体圆弧滑裂面上法向力和剪切力合力的作用位置和方向进行了假定;然后,依据能量平衡和力的平衡分别求出了土质边坡的稳定安全系数FS₁和FS₂。计算结果表明,相比瑞典条分法,FS₁偏小、FS₂偏大; FS₁和FS₂的平均值与瑞典法所得结果非常接近,相对误差小于6%。综合分析了边坡几何形状、土体强度参数、潜在圆弧滑裂面的位置等因素的影响,表明以FS₁和FS₂的平均值作为土质边坡的稳定安全系数是合理的。更多还原

【Abstract】 To avoid the complicated mechanics hypothesis between soil strips,the position and direction of resultant force of normal stress and tangential stress on circular slip surface are assumed for the potential landslide mass. According to energy balance and force equilibrium equation,two stability safety factors FS₁ and FS₂ are obtained for soil slope combined with strength reduction of soil material.Compared with the results of Fellenius method,the calculations show that the values FS₁ and FS₂ are slightly small and large,respectively. However,the average value of FS₁ and FS₂ is very closely to the results of Fellenius method,and the relative error is less than 6%. In this paper,the effects of slope geometry,soil strength parameters circular slip surface position are comprehensive considered,using the average value of FS₁ and FS₂ as slope safety factor is very reasonable.更多还原