基于离心试验的环形加筋挡墙破坏形式试验研究

环形加筋挡墙破坏形式的研究目前还处于相对空白阶段。笔者通过2组离心模拟实验,对环形加筋挡墙的破坏形式和变形特征进行了研究,初步判定了环形加筋挡墙的破裂面形状与“0.3H”破裂面相似,呈折线形。通过对挡墙破裂面附近监测点的位移对比分析研究表明:环形加筋形式对挡墙破裂面的开展有良好的限制作用,能使墙体的侧向位移变化更加均匀;环形加筋形式对约束挡墙侧向变形的能力较竖向变形能力强。

Experimental Study on Failure Mode of Ring-shaped Reinforced Retaining Wall Based on Centrifugal Test

There are few studies on the forms of failure of ring-shaped reinforced retaining walls. Two groups of centrifugal simulation experiments were carried out to study the failure modes and deformation characteristics of annular reinforced retaining walls. It is preliminarily determined that the shape of the rupture surface of the ring-shaped reinforced retaining wall is similar to that of the "0.3H" rupture surface, and it is a broken line shape. Comparative analysis of the monitoring points near the rupture surface of the retaining wall has shown that the annular reinforcement form has a good limit to the development of the rupture surface of the retaining wall, and it can make the lateral displacement of the wall change more evenly. The ability of the annular reinforcement form in limiting lateral deformation of the retaining wall is greater than that of vertical deformation.