Grouting branch-type anchor is a new type of expansion anchor,which has good pullout resistance.In or-der to further investigate the uplift bearing capacity of grouting branch-type anchor,numerical simulation analysis of grouting branch-type anchor is conducted by using ABAQUS finite element analysis software. By changing the diam-eter of the anchor rod support plate,the length of the anchoring section,and the diameter of the rod,the variation law of its uplift bearing capacity is studied. The simulation results show that as the diameter of the grouting branch-type anchor increases,the uplift bearing capacity increases. When the length of the anchoring section is greater than or equal to 8 m,the synergistic effect of the end resistance of the support plate and the lateral friction resistance of the anchoring section is good. The pull-out bearing capacity of the grouting support plate anchor rod with a diameter of 100 mm is significantly insufficient. Numerical simulation data may provide a theoretical basis for the practical ap-plication of grouting branch-type anchor in engineering.
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