Abstract: Super high-rise or long-span building structures mostly use a combination of steel and concrete. Studies have shown that the steel in the core area of the structure is intertwined with dense column bars and vertical and horizontal beam bars, making construction extremely difficult. The traditional construction method generally adopts methods such as adding ribs and openings on the section steel, welding straight threaded sleeves, welding after opening stirrups, and adding axils to the concrete columns. The cultural service center project of the Hefei High-tech Zone undertaken by our company has a structural form of frame structure stirrups, which are outer closed hoop + inner octagonal hoop. The core area of beam and column is very complicated, which is the main problem of construction.To this end, the project technicians carried out technical research on component nodes, reinforcement configuration and connection, formwork configuration and support of the core area of the beam and column, and adopted comprehensive construction technologies such as BIM technology deepening design and reinforcement bridge connection to solve the beam and column core. The problems of difficult construction and difficult quality control in the district provide a reference for solving these problems.