The application provides a high-strength
steel box girder structure for steel structure and a construction method thereof, and relates to the technical field of bridge construction. The high-strength
steel box girder structure for steel structure comprises a
locking mechanism and a longitudinal and transverse
steel frame mechanism, the bottom end of the
locking mechanism is provided with the longitudinal and transverse
steel frame mechanism, the left and right sides of the longitudinal and transverse
steel frame mechanism are provided with steel frame stabilizing mechanisms, the bottom end of the steel frame stabilizing mechanism is provided with a side steel frame mechanism, the longitudinal and transverse steel frame mechanism comprises a bottom plate and four longitudinal connecting plates, and the top end of the bottom plate is fixedly connected with five transverse connecting plates. The longitudinal connecting plates and the transverse connecting plates are arranged in the
steel box girder, cross-
welding is performed, the reinforcing effect of the steel frame stabilizing mechanism and the
locking mechanism is utilized to enhance the overall strength of the steel
box girder, the side steel frame mechanism is utilized to reinforce the two sides of the bottom plate of the steel
box girder, the occurrence of the
wrinkle damage phenomenon is reduced, the stress fatigue is reduced, and the smooth traffic is ensured.