坡角对坡间挡土墙稳定性影响的数值模拟分析

以205国道某坡间挡土墙为例,运用数值模拟方法,对车辆荷载作用下坡角对挡土墙稳定性的影响进行了分析.结果表明,坡角对挡土墙变形破坏具有非常敏感的影响.随着坡角的增加,挡土墙水平变形量增加,塑性区范围扩大,而且坡面滑移造成墙体附加变形.因此,坡间挡土墙的建造应充分考虑边坡坡角的影响,对路基、墙体和坡体实施有针对性的整体加固方案.

Analysis of slope angle effect on the stability of a retaining wall on slope by numerical simulation method

According to a retaining wall failure instance on 205 National Road in Shandong Province of China,the numerical simulation method was used to analyze the effect of slope angle on the retaining wall stability under vehicle loading.The results show that slope angle can sensitively influence the whole stability of the retaining wall.The horizontal deformation and plasticity scale of the retaining wall increase with increasing slope angle,and the slippage of the slope can result in additional deformation of the retaining wall.During the construction of the retaining wall on a slope,the effect of slope angle should be considered to determine the whole reinforcement scheme for roadbed,wall,and slope body.