A steel platform for high-altitude large-span cantilever concrete corridor construction

Abstract

This utility model relates to a steel platform for the construction of high-altitude, large-span cantilevered concrete corridors, belonging to the field of architectural engineering technology. During construction, steel sections are first pre-embedded in the side beams of the lower structure to form steel-concrete beams. The steel sections at the beam ends cantilever outwards by a certain length. Next, the cantilevered steel sections are connected to the lower structural columns and steel braces to form a triangular support bracket load-bearing system. Then, the main steel beams are installed, with the main steel beams connected to the triangular support brackets using high-strength bolts and bevel welding. The main steel beams and steel-concrete beams are hinged together via connecting plates. The main steel beams are welded to the structural side beams. All I-beam secondary beams are placed on top of the main steel beams and fixed with pressure plates and locking rings. After the main and secondary beams are fixed, wooden planks are laid on the secondary beams for horizontal enclosure. This utility model solves the problem of difficult formwork support for high-altitude, large-span cantilevered concrete corridor structures, and also has the advantages of safe and reliable construction, convenient operation, and good economy.

Images