Fan foundation and wind generating set

The invention provides a fan foundation and a wind generating set. The draught fan foundation comprises a bottom plate, and the thickness direction of the bottom plate is the vertical direction; the stand extends in the vertical direction; the main rib beam is arranged in the step groove and is connected with the peripheral surface of the stand and the first surface of the bottom plate; the ribbed beam assembly comprises a plurality of secondary ribbed beams, the secondary ribbed beams are arranged in the step grooves, each secondary ribbed beam is connected with the first surface, first parts of the secondary ribbed beams are connected with the main ribbed beams, and included angles are formed between the length directions of the first parts and the length directions of the main ribbed beams connected with the first parts; the second part of the multiple secondary ribbed beams is connected with one of the main ribbed beams, the stand and the first part, and the distance between any point on the first surface