Pre-embedded steel pipe column positioning device and steel pipe column pre-embedding construction method

The invention discloses an embedded steel pipe column positioning device and a steel pipe column embedding construction method.The embedded steel pipe column positioning device is used for positioning a steel pipe column in a pile hole and comprises a positioning assembly and a positioning assembly, the positioning assembly comprises at least four expansion water bags, the expansion water bags are hollow to form water injection cavities, and each expansion water bag is provided with an outer contact surface and an inner contact surface; the outer contact surface and the inner contact surface are both cambered surfaces and are concentrically arranged, all the expansion water bags are circumferentially and uniformly arranged on the same horizontal plane around the central axis of the steel pipe column and are arranged on the outer side of the steel pipe column, and the outer contact surface of each expansion water bag is connected with the hole wall of the pile hole; the water injection assembly comprises a wat