Analysis of Mechanical Properties of Foundation Joints of Short Pile with Inclined Anchor

The tower foundation of transmission lines in mountainous areas often bears a large uplift force. As a new foundation form composed of central stub pile and multiple anchors around pile, the inclined anchor stub pile foundation can make full use of the bearing capacity of the surrounding rocks and has a strong uplift bearing capacity. In order to study the mechanical properties of inclined anchor short pile foundation joints. ABAQUS finite element software was used as the analysis tool. Based on the material constitutive model, frictional contact behavior, simulation method and theory required for modeling, numerical simulation of the uplift bearing capacity of inclined anchor short pile foundation was carried out, and the reliability of the finite element calculation was verified by comparison and analysis with the laboratory test results. The law of stress deformation and failure of foundation joints is studied. The results show that the experimental results are in good agreement with the numerical results, and the three-dimensional numerical model can be used for mechanical analysis of short pile foundation with inclined anchor. The failure of short pile foundation with inclined anchor starts from the node area under the action of uplift force, and the failure process can be roughly divided into four stages.