Abstract：
The steel structure of Zhenjiang Dagang gymnasium adopts various-height tubular truss structure, where roof and wall are integrated into a whole system. Secondary truss and supporting system are optimized with sufficient consideration of building space and structural force transfer characteristics, to successfully improve the spatial force bearing capacity of tubular truss structure system. Four types of support, including hinged support, X-shape spring support, Y-shape spring support and bi-directional spring support, are set on to ensure the optimal rigidity and bearing capacity of the whole steel structure.
