平台间距对两级装配式挡土墙结构特性的影响

Influence of Platform Spacing on Structural Characteristics of Two-Stage Fabricated Retaining Wall

摘要: 利用有限差分软件FLAC3D，对两级装配式挡土墙的结构特性进行了分析，并研究了平台间距对两级装配式挡土墙结构特性的影响。研究表明：对两级装配式挡土墙而言，一级挡土墙所受水平应力较大，设计时可适当增大一级挡土墙的结构强度；二级挡土墙的水平位移较大，可在二级挡土墙底板下方增加凸榫；无论是一级挡墙，还是二级挡墙，随着平台间距的增大，挡土墙面板上的水平位移都在不断减小，且一级挡墙面板水平位移的减小趋势比较明显；一级挡土墙水平应力随平台间距的变化不大，二级挡土墙水平应力随平台间距的变大而不断增加。

Abstract: Using the finite difference software FLAC3D, the structural characteristics of a two-stage fabricated retaining wall are analyzed, and the influence of platform spacing on the structural characteristics of a two-stage fabricated retaining wall is studied. The results show that, for the two-stage fabricated retaining wall, the horizontal stress of the first level retaining wall is large, and the structural strength of the first level retaining wall can be appropriately increased in design; The horizontal displacement of the second retaining wall is relatively large, so the tenon can be added under the bottom plate of the second retaining wall. Whether it is the first level retaining wall or the second level retaining wall, with the increase of the platform spacing, the horizontal displacement of the retaining wall panel is decreasing, and the horizontal displacement of the first level retaining wall panel is decreasing obviously. The horizontal stress of the first level retaining wall has little change with the platform spacing, while the horizontal stress of the second level retaining wall increases with the platform spacing.