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基于强度折减法,采用PLAXIS软件建立边坡计算模型,研究坡面条形荷载对边坡稳定性的影响。结合边坡各计算工况的安全系数、潜在滑裂面的形状与位置以及滑动方向,分析了坡面条形荷载作用下荷载大小和方向对边坡稳定性的影响。结果表明:坡面荷载倾角较小时,可以起到加固边坡的作用,但随荷载的增大,边坡滑动方向由向下转变为向上,潜在滑裂面的形状由圆弧形转变为近似折线形;荷载倾角较小时,潜在滑裂面的失稳范围随坡面荷载的增大先增大后减小,荷载倾角较大时,滑裂面范围随坡面荷载的增大逐渐减小。实际工程中,在坡面作用有较小倾角的适量荷载可以起到加固边坡的作用。
Based on the strength reduction method, the PLAXIS software was used to establish the slope calculation model to study the influence of slope strip load on the slope stability. According to the safety factor, the shape and position of the potential slip surface and the sliding direction of the slope, the influence of the load size and direction on the slope stability is analyzed. The results show that the slopes slope can be strengthened when the load angle is small, but the slope slip direction changes from downward to upward as the load increases, and the shape of the potential slip surface changes from circular arc to approximate When the load angle is small, the range of instability of the potential slip surface increases first and then decreases with the increase of slope load. When the load angle is larger, the range of slip surface decreases with the increase of slope load . In practical engineering, the appropriate amount of load acting on the slope with smaller inclination can play the role of reinforcing the slope.