Pre-assembly structure for building construction

According to the technical scheme, the building construction pre-assembly structure comprises a pre-embedded plate and a bayonet socket, the pre-embedded plate is installed in a vertical beam in a pre-embedded mode, the bayonet socket is installed in a cross beam in a pre-embedded mode, a plug-in column is installed in the middle of one side of the pre-embedded plate, the plug-in column is connected into the bayonet socket in an inserted mode, and the plug-in column is connected with the cross beam in a clamped mode. And a rotating shaft is installed in the bayonet socket, clamping plates are installed on the portions, close to the top and the bottom, of the rotating shaft, a transmission shaft is installed on one side of the interior of the bayonet socket through a supporting plate, and a locking rod is installed on the top of the interior of the bayonet socket. According to the building construction pre-assembly structure, the problems that an existing pre-assembly mechanism is of a spliced structure, part