齿坎式路基挡土墙抗滑稳定性的现场试验研究

Stability research on retaining wall with notched sill by site testing

以一系列的现场试验为基础 ,研究了齿坎对挡土墙抗滑稳定性的作用 ,以及不同齿长对挡土墙抗滑稳定性的影响 ,并用极限平衡理论进行分析计算 ,从而得出结论 :尽管齿坎较短 ,但对挡土结构物的抗滑作用甚大 ,在试验齿长范围内 ,抗滑力与齿长呈正比 ,当抗滑力达到极限值时 ,齿前土压力达到被动土压力值 。

Based on a series of the site testing for stability of retaining wall,this paper presents the action of a notched sill and affection of the various depth of notched sill for the stability against sliding.The force against sliding is analyzed by the method of limit equilibrium theory and site testing.Some important conclusions such as a characteristic against sliding of the notched sill,the force against sliding being directly proportional to the notched sill depth,and so on,are obtained.