Screw anchor foundation structure with high economic benefit

The utility model relates to the technical field of power transmission lines, and discloses a high-economic-benefit spiral anchor foundation structure which comprises a steel bearing platform, threaded rods are fixedly connected to the triangle of the bottom of the steel bearing platform, nuts are connected to the outer sides of the threaded rods in a threaded mode, and foundation anchors are connected to the interiors of the nuts in a threaded mode. During use, firstly, punching points are set on a construction site, a foundation anchor is drilled into the ground through the punching points, meanwhile, the foundation anchor is better drilled into the ground and more firmly enters the ground through an auger, the ground drilling distance of the foundation anchor is limited through a limiting plate, and the lengths, exposed out of the ground, of the upper portion of the foundation anchor are the same; the bottom ends of the threaded rods are tightly attached to the tops of the corresponding base anchors respec