不同破坏模式下重力式路肩挡土墙稳定性研究

Study on stability of gravity road shoulder retaining wall under different failure mode

根据不同破坏模式下路肩墙主动土压力计算公式,推导了重力式挡土墙的抗倾覆和抗滑移稳定系数与稳定方程表达式,研究了4种工况下墙后土压力、破裂角和稳定性的变化规律,对规范中提出的两种验算方法可靠度进行了对比分析,最后,分析了填料内摩擦角对挡土墙稳定性的影响,以供参考。

The expressions for anti-overturning and anti-slipping stability coefficients and equations are derived by using the formula for active pressure of wall under different failure mode. The variation characteristics of earth pressure acting on the wall, angle of rupture and stability of are investigated under four cases. The reliability of two checking methods presented by the specification are compared and analyzed. Finally, the influence of the internal friction angle of the backfill on the stability is analyzed, for reference.