Changping Sports Center, with a total construction area of 22556 square meters, has a steel structure roof above the main body of the project. The entire roof is elliptical in shape, with a long axis of 188m and a short axis of 134m. The entire roof structure system is a large-span steel truss system, supported by four large steel columns with a diameter of 2m and 68 tension cables. The installation adopts segmented lifting and aerial assembly methods.