H型抗滑桩加固膨胀土滑坡的有限元分析及优化设计

基于西南山区某膨胀土滑坡整治工程，采用非线性有限元方法，分析了全埋式H型抗滑桩加固膨胀土边坡的有效性及其与膨胀土边坡相互作用时的受力特性，并提出了优化设计方案。研究结果表明:全埋式H型抗滑桩能有效遏制膨胀土滑坡的塑性区发展及边坡的滑移；桩排距不应小于4.0 m，桩列距取4.5~5.0 m为宜。

FEM Analysis and Optimized Design of Reinforcement of Expansive Soil Landslide by H-type Anti-slide Piles

Depending on the regulation of an expansive soil landslide in the southwest mountainous area, the paper analyzed by nonlinear finite element method the effectiveness of expansive soil landslide reinforcement by embedded H-type anti-slide piles and the mechanical properties in the interaction therebetween; then proposed the optimized design scheme.The result shows that embedded H-type anti-slide piles may restrain the plastic zone development in expansive soil landslide and the slope sliding.It’s recommended that the pile spacing is between two rows of pile not less than 4.0 m, and the spacing is between two columns of pile is good to be 4.5~5.0 m.