水泥土搅拌桩连拱抗滑墙加固软土地基边坡模型试验及数值分析

Model Test and Numerical Simulation of the Application of Cement-soil Arched Walls in the Anti-slide Reinforcement of Soft Ground Embankment

为验证水泥土搅拌桩连拱抗滑墙加固软土地基边坡的作用机制,在进行了系列室内模拟试验的基础上,对模型试验进行了数值分析。采用有限元方法,分析了水泥土搅拌桩连拱抗滑墙的传力机制,不同深度土层分担水平推力分布形式及大小以及加固区不同深度土层剪力分布的规律。研究表明,有限元数值分析方法计算所得到的结果与模型试验的结果比较接近,并证明了自行设计制作的模型槽对水泥土搅拌桩连拱抗滑墙加固软土地基边坡等类似工程进行室内模型试验的可行性。

In order to testify the mechanism of cement-soil arched anti-sliding walls to reinforce the soft ground embankment, the finite element method is used to analyze the model test. The force transmission mechanism of ce- ment-soil arched anti-sliding walls, and the distribution and magnitude of lateral force on soil layer of different depth, and the distribution of shear force on soil layer in the reinforced area is acquired. It shows that the result cal- culated by the finite element method is close to that from the model test. It proves the feasibility of research on ce- ment-soil arced anti-sliding walls reinforcing the soft ground embankment and similar project by model test method.