Structural Design and Analysis of Key Joints of the Stadium Canopy of Chengdu Sport University

In order to achieve the circumferential discontinuous stepped shaped of the roof canopy of the Chengdu Sport University Stadium, while ensuring the continuity of the structure, a pipe truss with built-up top chord section was proposed. The section properties were assigned to the geometric model generated by using a self-developed program Grasshopper, conducting modal, stress, deformation, and buckling analysis of the canopy in SAP 2000, and performing finite element analysis on the key joints by using ABAQUS. The analysis results showed that the arrangement of the canopy structure adopting pipe truss with built-up top chord section was reasonable; the force transmission was clear; the overall integrity was good; the joint design was safe and reliable, and it could perfectly present the architectural stepped shape, providing a reference for similar structural designs.