Righting, pressing and attaching tool for T-shaped material welding and T-shaped material welding method

The invention relates to the technical field of ships, and discloses a righting, pressing and attaching tool for T profile welding and a T profile welding method.The righting, pressing and attaching tool for T profile welding comprises a connecting device, a pressing and attaching device and a righting device. The connecting device comprises a supporting frame, first jacking columns, a first fastener, a first bolt pipe and a second bolt pipe, a first containing groove which extends in the first direction and is used for containing the T-shaped profile is formed in the supporting frame, and the first jacking columns are arranged on the two sides, in the first direction, of the first containing groove in a sliding mode. The pressing and pasting device comprises a first bolt, a pressing and pasting cylinder, a second bolt pipe, a second bolt and a first force application plate, the first end of the first bolt is inserted into the first bolt pipe, the pressing and pasting cylinder is arranged at the second end of