On September 6, 2020, the 2022 Qatar World Cup main stadium Lusail Stadium project undertaken by China Railway Construction began to upgrade the roof cable structure with the most technical difficulty and the most difficult construction.

This project is the first time a Chinese company has participated in the construction of a professional football stadium with the highest standards of the World Football Federation as a general contractor of design and construction. As the main venue for the 2022 World Cup, it will undertake major events such as the closing ceremony, semi-finals and finals. It can accommodate 92,000 spectators as a whole, which is 1,000 more seats than the "Bird's Nest". It is currently the largest and most accommodating Chinese company built overseas. The professional stadium with the largest number of people is currently the largest membrane structure construction project in the world, and it is also one of the world's largest stadiums with fish-belly cable net roof and the largest cantilever distance in the world.

“The total weight of the main cable structure of the project is 2,320 tons, and it needs to be lifted to about 70 meters in the air. It is very difficult to complete the installation and docking with the main steel structure.” Shen Jiayong, the project cable membrane construction manager, said that the project cable structure lifting sub-loop cable lifting , The lower radial cable lifting and the upper radial cable lifting are carried out in 3 stages. This time the hoop cable lifting is implemented. The overall cable structure of the project is similar to the wheel of a bicycle. The pressure ring of the steel structure is a "wheel", the ring cable is a "hub", and the radial cable is a "wheel spoke". After the construction of the cable structure is completed, it will form a stable "bicycle wheel shape". "The structure shows the appearance of a saddle-shaped roof.

"We are lucky to have such a partner!" Recently, Osman, the project executive director of the owner, said. Under the situation of the global spread of the new crown epidemic, the Lusail Stadium Project Department of China Railway Construction International Group insists on epidemic prevention and production, and steadily promotes the project. It teaches foreign employees about epidemic prevention and anti-epidemic knowledge, urgently purchases masks and other protective equipment, and subcontracts All project personnel, including business partners, owners, and supervisors, will be issued to normalize the epidemic prevention and control work to ensure that there are no dead ends in epidemic prevention.

The builders of China Railway Construction integrated multiple resources, set up an on-site command center, and set up working groups for upgrading, safety and security, and logistics support. Using an intelligent synchronous hydraulic lifting system, they have repeatedly demonstrated the improvement with the owner, supervisor, and designer. According to the plan, the equipment was also tested and adjusted before the upgrade was officially started. With the close cooperation of more than 100 builders from multiple departments such as construction, safety, hoisting, design units, and monitoring, the command center personnel made unified scheduling arrangements for the roof cable structure improvement, forming an efficient and smooth information transmission mechanism to ensure cable The structural upgrade was implemented smoothly. Editor/Sang Xiaomei