The invention discloses a prefabricated
pile cap foundation, a
power transmission tower and a construction method for the
power transmission tower. The prefabricated
pile cap foundation comprises a
pile, a prefabricated
pile cap and
grout, wherein the pile is provided with a pile head, a plurality of connecting fasteners are arranged on the top surface of the pile head in a protruding mode, the prefabricated
pile cap is arranged on the pile in a covering mode, a containing groove is concavely formed in the bottom surface of the prefabricated
pile cap, a grouting cavity is formed between the inner groove wall of the containing groove and the pile head in a matched mode, all the connecting fasteners are located in the grouting cavity, at least one grouting hole is formed in the side surface of the prefabricated pile cap, and the
grout is injected into the grouting cavity from the grouting holes to be fixedly connected to the pile cap and the pile head to form an integrated structure. According to the prefabricated pile cap foundation, the
power transmission tower and the construction method for the power
transmission tower, the prefabricated pile cap is directly transported to a construction site after being manufactured so that the costs of manpower,
material resources, time and the like required to be consumed in the process of pouring the pile cap on site can be avoided, the construction period can be effectively shortened, the construction cost can be reduced, and meanwhile, the influence on the surrounding environment can be avoided; and in addition, the prefabricated pile cap and the pile are connected in an
assembly mode, and therefore the
assembly and disassembly can be realized without damaging the use performance, and the cyclic utilization of materials can be realized.