At an altitude of about 66 meters above the ground, the main cable net of the Lusail Stadium project, the main stadium of the Qatar World Cup in 2022, with a total weight of about 2,300 tons, is stretched and formed, and successfully sold to the steel structure, marking the first time a Chinese company has contracted for design and construction The main structure of the roof of the World Cup main stadium that participated in the construction was successfully completed.
This project is currently the largest and largest professional venue built by Chinese companies overseas. It is also the largest single cable-net roof single building of the same type of cable-net system in the world. It is owned by China Railway Construction International Group.
Overhead shot of the construction site of the Lusail Stadium project
From the appearance, the triangular grid facade effect of the curtain wall of the project shows the traditional Qatar lantern decoration, and the whole building presents the shape of Arabic golden bowl-shaped utensils. The main cable net of the roof adopts a double-spoke tension structure with a span of 274 meters and a cantilever distance of 76 meters, which is shaped like a huge wheel-shaped “bowl cover”. In December 2020, the project was listed on the new 10-yuan banknote issued locally in Qatar, and “Made in China” appeared on the currency of Qatar for the first time and became a national business card.
“To build this’big golden bowl’, the error of each process must be controlled at the millimeter level.” Shen Jiayong, the construction manager of the project roofing project, said that the success of the main cable net is directly related to the success or failure of the overall project. The construction accuracy of membrane engineering has a great influence on the final roof configuration and roof drainage. During the Spring Festival of 2021, the construction party actively responded to overseas epidemics and the world’s top engineering and technical challenges, strictly followed the grid management and epidemic prevention requirements, organized epidemic prevention propaganda, stocked adequate epidemic prevention materials, and carried out epidemic prevention and control inspections every week. In catering, transportation, on-site operations, etc., we have adopted practical and feasible epidemic prevention measures, coordinated arrangements for project advancement, hired top domestic and foreign experts, and conducted technical research through demonstration discussions and third-party review.
The builders of the Lusail Stadium project adjusted the cable head position
In the process of roof cable lifting, the project adopts an intelligent synchronous hydraulic lifting system. The displacement and pressure values are transmitted to the main control room through the jacks and sensors on the pump station, and all axes are continuously and synchronously lifted intermittently. Force monitoring and real-time comparison with panoramic simulation simulation calculation values ensure the safety and accuracy requirements of roof structures.
Under the overall leadership of the Chinese builders, 110 large-scale subcontracting companies from 15 countries around the world, and more than 4,600 builders worked together to successfully complete the World Cup main stadium that can meet FIFA, European and American regulations and Qatar local regulations at the same time. Important project nodes, presented the Chinese Year of the Ox gift to the world.