DataSheet1_Quantification of the Active Lateral Earth Pressure Changes on Retaining Walls at the Leading Edge of Steep Slopes.docx

Retaining walls may become unstable when the steep slope angle of the top of the wall (β) is greater than the internal friction angle of the earth behind the wall (φ). To examine this behaviour, an active earth pressure model test setup was designed with inclined backfill behind the wall, and corresponding finite element simulations were performed at the same dimensions. The active earth pressure variation patterns of the retaining wall under two displacement modes were studied: translation (T mode) and rotation around the bottom of the wall (RB mode). The experimental results corresponded well to the finite element simulation results. The study found that the experimental results coincided well with the results of the finite element simulation. The active earth pressure and the location of the resultant force points are both connected to the wall displacement pattern and slope angle.

当墙体顶部（β）的陡峭坡度角超过墙体后土体内部摩擦角（φ）时，挡土墙可能会变得不稳定。为了探究此行为，设计了一种主动土压力模型试验装置，该装置在墙体后设有倾斜的回填土，并在相同尺寸下进行了相应的有限元模拟。研究了挡土墙在两种位移模式下的主动土压力变化模式：平移（T模式）和围绕墙体底部的旋转（RB模式）。实验结果与有限元模拟结果相符。研究结果表明，实验结果与有限元模拟结果高度一致。主动土压力和合力作用点的位置均与墙体位移模式和坡度角密切相关。