Detailed structural transformation node drawings, including: hinged drawing of secondary beam and main beam, concrete slab filling at the portal, rectangular hole blocking, steel foundation, steel beam hanging steel column, steel beam and concrete column positive connection, adding layer of column base, opening and wrapping steel, hanging column at the beam bottom, planting reinforcement on the beam to increase the shear wall, sticking carbon fiber to the beam column, changing the floor into composite steel beam, and a total of 15 structural details