Combined micro pile foundation and design method

The invention relates to the field of power transmission line foundation design, in particular to a combined miniature pile foundation and a design method. Comprising a soil layer and a bedrock layer arranged below the soil layer, a pile hole is formed in the soil layer, a cylindrical pile is arranged in the pile hole, a reinforcement cage is arranged in the cylindrical pile, a plurality of anchor rod holes are formed in the bedrock layer in the circumferential direction of the axis of the cylindrical pile, and the anchor rod holes intersect with one another to form anchor holes; anchor rod piles are arranged in the anchor holes, longitudinal bars are arranged in the anchor rod piles, and the multiple longitudinal bars are connected through at least two stirrups. The multiple anchor rod holes are formed in the bedrock layer and connected with one another to form the anchor holes, the longitudinal bars, the stirrups and the anchor rod piles are arranged in the anchor holes, the shear capacity is high, large ho