抗滑桩细观受力特征的数值模拟研究

抗滑桩是滑坡防治工程中一种非常有效的支挡措施,其受力特征直接关系到滑坡防治效果,因此开展抗滑桩细观受力特征的数值模拟研究具有重要的工程应用价值。基于有限元数值模拟方法,采用ANSYS软件中的分离式模型,以SOLID65单元和LINK8单元分别模拟钢筋混凝土抗滑桩中的混凝土和钢筋,研究了不同荷载作用下抗滑桩的细观受力特征。结果表明:在相同荷载作用下,抗滑桩在高度较小阶段,其高度与抗滑桩的变形呈非线性变化,随着抗滑桩高度的增加,其高度与抗滑桩的变形趋于线性关系;有限元数值模拟能较好地反映钢筋混凝土抗滑桩的细观受力特征。该研究可以为抗滑桩工程的设计提供借鉴与参考。

Numerical Simulation Research on the Mesoscopic Force Characteristics of Anti-slide Pile

Anti-slide pile is one of the effective engineering control measures for landslides.Their mechanical characteristics directly relate to the landslide control effects.Based on the finite element numerical simulation method,Solid 65 element and Link 8 element of the separated model in ANSYS software are chosen to simulate the concrete and steel bar of the anti-slide pile,respectively.The mesoscopic force characteristics of anti-slide pile are simulated under different loads.The results show that,under the same load,when the depth of the pile is very small,the relationship between the depth and deformation of the pile is nonlinear.As the depth increases,the relationship between the depth and deformation of the pile tends to become positive linear.The finite element numerical simulation can better reflect the force characteristics of the reinforced concrete pile.This research may provide references to the anti-slide pile project design.