Novel steel skeleton building structure

A novel steel framework building structure comprises an upper steel pipe, a lower steel pipe, a semicircular supporting plate, a U-shaped pipe sleeve, a fixing frame, an external thread arc-shaped plate, an internal thread locking sleeve, an upper fixing lantern ring and a lower fixing lantern ring, a circular supporting table is arranged on the lower portion of the semicircular supporting plate, a threaded connecting pipe is arranged on the lower portion of the circular supporting table, the threaded connecting pipe is matched with the lower steel pipe and inserted into the lower steel pipe, and the U-shaped pipe sleeve is connected with the fixing frame. The upper surface of the lower steel pipe is attached to the circular supporting table, the semicircular supporting plate is provided with a semicircular supporting plate inner groove, the lower portion of the upper steel pipe is matched with the semicircular supporting plate inner groove, the lower portion of the upper steel pipe is attached to the semicir