Key technology in the sports swimming pool steel structure construction

The venue is divided into the gymnasium function area, the central hall and the natatorium function area, and the whole roof connects the two functional areas into a whole through the central hall. Among them, the steel roof of the sports natatorium adopts the oblique oblique double-curved double-layer mesh shell structure, the central hall roof is the oblique oblique curved single-layer mesh shell structure, the east and west sides of the gymnasium and the natatorium are provided with a single-layer cantilevered mesh shell structure, which can be divided into double-layer mesh shell, single-layer mesh shell, boundary truss, door arch truss and so on. The steel roof components have various forms and complex joints, which are mainly composed of “L-shaped” curved and twisted section beams, variable section box bending and twisting members and “drum” joints. The steel roof has the characteristics of complex shape and large span, and the construction period of the project is tight, there are many professions and high quality requirements.
This paper introduces the key and difficult points of steel roof construction in the stages of deepening design, processing, on-site installation and digital information management, that is, the construction environment of the whole structure is complicated, the deepening processing of components and nodes is difficult, the installation configuration is difficult, the high altitude operation and the welding quality requirements are high. The key construction techniques and methods in the construction stage of the hyperbolic reticulated shell roof are emphasized. The construction organization of “information-based organization management, interspersed process and time-limited” has solved the difficulties of cross-construction of various majors in large-scale sports venues. The large walking tower crane is hoisted in separate blocks, combined with the dual construction scheme of local hydraulic overall lifting, which solves the difficulties of tight project period and high quality requirements, and realizes the key technology of large-tonnage tower crane working on the floor and arc-walking