基于有限元的重力式挡土墙应力与变形数值模拟分析

Numerical Simulation Analysis of Stress and Deformation of Gravity Retaining Wall Based on Finite Element

基于有限元强度折减法对一个11.74 m高的重力式挡土墙进行数值模拟,通过与未支护边坡进行对比,分析了重力式挡土墙的变形、应力、有效塑性应变和整体稳定性。研究结果表明,重力式挡土墙可以有效地限制边坡的滑动,其水平位移和沉降分别为3.89 mm和12.60 mm,并且水平位移沿高度方向呈现为上大下小的线性分布,重力式挡土墙的变位模式为绕墙底的转动破坏;重力式挡土墙墙身受到的压应力沿高度方向呈非线性分布。

Based on the finite element strength reduction method,an 11.74 m high gravity retaining wall is numerically simulated.By comparing it with unsupported slopes,the deformation,stress,effective plastic strain,and overall stability of gravity retaining walls were analyzed.The results show that the gravity retaining wall can effectively limit the sliding of the slope.The horizontal displacement and settlement are 3.89 mm and 12.60 mm,respectively.The horizontal displacement shows a linear distribution along the height direction,with the displacement mode of the gravity retaining wall being rotational failure around the bottom of the wall.The compressive stress of the gravity retaining wall is nonlinearly distributed along the height direction.