Plug-in type steel pipe concrete column base for large power transmission tower and construction method thereof

The invention belongs to the technical field of concrete-filled steel tubes, and particularly relates to a plug-in concrete-filled steel tube column base for a large power transmission tower and a construction method of the plug-in concrete-filled steel tube column base. The structure comprises a bottom pile foundation anchoring pier, a foundation bearing platform and insertion type steel pipe concrete which are sequentially arranged from bottom to top; a grouting opening is formed by a top pipe opening of the insertion type steel pipe concrete, a pressing plate is coaxially arranged in the grouting opening, an anchor plate is further arranged above the grouting opening, and the anchor plate and the pressing plate are connected through a middle rod. The concrete-filled steel tube column foot further comprises an axial pull rod and a tensioning nut used for tensioning the axial pull rod. The insertion type steel pipe concrete column base has the advantages of being simple in structure, reliable in force transm