刚度对整体式加筋土挡墙稳定性能影响的试验研究

Experimental Study on Effect of Stiffness on the Stability of Monolithic Reinforced Earth Retaining Wall

关于加筋土挡墙中,筋材与墙后填土的综合效应和面板刚度对加筋土挡墙的稳定性影响尚未得到充分研究,加筋土的现行设计方法也存在诸多待完善的地方。通过改变加筋土挡墙的面板刚度(厚度),实施了整体式面板加筋土挡墙在荷载作用下的室内模型实验,以研究面板刚度对加筋土挡墙稳定性能的影响。实验结果表明:整体式加筋土挡墙在水平荷载的作用下,随着面板刚度的增加,挡墙的稳定性能越好,整体变形越小;整体式加筋土挡墙面板在荷载作用下的变形较均匀,未出现突变变形;挡墙的面板刚度在加筋土挡墙的结构设计中占有重要地位。可为加筋土挡墙结构设计和解决实际工程问题提供实验基础和依据。

The research on the comprehensive effect of the reinforcement and the backfill of the retaining wall is not perfect. And the effect of panel stiffness on the stability of reinforced earth retaining wall has not been fully studied. In addition, the existing design method of reinforced soil has many places need to be improved. In order to study the influence of panel stiffness on the stability of reinforced earth retaining wall, a laboratory model experiment of integral panel reinforced earth retaining wall under loading was carried out. In the experiment, the variable was the panel stiffness（ thickness） of reinforced earth retaining wall. The experimental results showed that with the increase of panel stiffness under the action of horizontal load, the better stability it was, the less deformation it would be. The deformation of the overall reinforced earth retaining wall under the load was relatively uniform, and there was no mutation deformation. The panel stiffness of retaining wall played an important role in the structural design of reinforced earth retaining wall.The results of this research could provide experimental basis for designing and solving practical engineering problems for reinforced earth retaining wall.