Stade Ouesso, Congo-Brazzaville

The construction area of the steel structure is 7,000 square meters, because the Congo is located in the subtropical region, the construction difficulty is very large, and the steel structure construction difficulties are analyzed:

(1) The roof truss has a large length and a special-shaped shape, which is difficult to install. The roof steel pipe truss structure is very large, the cantilever length is 11.2 meters, the total length is more than 15.7 meters, the main truss is very heavy about 1.5 tons, according to the site conditions, the crane can only stand on the outside of the stadium for hoisting, the lifting distance is far, the on-site splicing and hoisting have greater installation difficulties, in order to ensure safety and quality, it is recommended that the west grandstand is supported by steel pipe support.

(2) There are many secondary trusses, criss-crossed. The secondary truss of this project is an arch structure, and the plane truss and the vertical truss are staggered, and the installation is difficult.
(3) There are many welding nodes on site, and the welding quality requirements are high. All nodes on the site are welded except that the main couple adopts anchor bolt connection, and the number of components is larger, and the corresponding welding amount is increased.