一、前言 有锚柔性墙(板桩墙、地下连续墙等)是一种轻型的挡土结构。在工作荷载作用下,其工作状态一般为弹性嵌固。它有别于刚性墙的特点是,由于锚碇系统及入土段土体的约束,在墙后土体的作用下墙体产生挠曲变形。由此引起土压力的重新分布,即墙后土压力呈R形分布。而墙前土压力在土面附近大于按塑性极限平衡确定的被动土压力,但到一定深度后开始急 I. INTRODUCTION Anchored flexible wall (sheet pile wall, underground continuous wall, etc.) is a lightweight retaining structure. Under the action of a working load, its working condition is generally elastic. It differs from the rigid wall in that the wall deforms under the effect of the earth behind the wall due to the constraints of the anchorage system and the soil in the soil. This caused a redistribution of earth pressure, ie, the earth pressure behind the wall was R-shaped. The earth pressure before the wall is greater than the passive earth pressure determined by the plastic limit equilibrium near the soil surface, but it begins to rush after a certain depth.