加筋与土体间界面反应特性的大型拉拔试验研究

The experimental study on the anti-pull boundary surface reaction property between reinforcement and soil by the large model

用于加筋土计算的主要方法有极限平衡法和有限单元法两种 ,在利用这两种方法对加筋土体进行稳定性计算时 ,都需要利用土体与加筋界面反应特性参数 .根据大型拉拔试验测定的筋—土接触面特性的数据 ,绘制出剪应力与拉拔位移之间的关系曲线 ,它符合非线性的双曲线规律 ,并求出 5个接触面特性参数 。

State of limit equilibrium method and FEM method are two kinds of main method which will be used in calualating the reinforced soil problems, when these methods are used to analyze the stability of the soil, the boundary reaction property parameters are needed to be used.According to the test data of the anti pull boundary surface reaction property between the reinforcement and the soil by the large model, the relate curve of the shear to displacment had been drawn, it accords with nonlinear hyperbolic rule, and five boundary specific property parameters have been obtained.They can be used in FEM about reinforced earth.