首先查明桥区的工程地质条件;然后基于快速拉格朗日有限差分法(FLAC3D),建立数值模拟模型,模拟各种情况下岸坡的应力场、变形、塑性区等特征,分析岸坡稳定性。结果表明:桥梁荷载作用附近的最大、最小应力场分布规律略有调整;岸坡整体位移向河谷,承台附近区域位移最大,距承台越远位移越小;在桥梁荷载作用下岸坡整体稳定。 Firstly, the engineering geological conditions of the bridge area were identified. Then based on the fast Lagrange finite difference method (FLAC3D), numerical simulation models were established to simulate the stress field, deformation and plastic zone of the bank slope under various conditions. stability. The results show that the distribution law of the maximum and minimum stress field around the bridge is slightly adjusted. The displacement of the whole bank to the valley and the area around the cap is the largest, and the farther away from the cap is the smaller. Under the load of the bridge, stable.