[Explanation] Right now, the 2022 World Cup in Qatar is underway.
As one of the eight main stadiums of this World Cup, Qatar Education City Stadium has attracted attention for its unique appearance. The scientific research team from Southeast University participated in the construction of the project.
[Explanation] The facade of Qatar Education City Stadium is designed as a complex diamond-shaped geometric pattern, nicknamed "Desert Diamond". The roof structure adopts a circular cable-supported grid structure. Nanjing Dongda Modern Prestressed Engineering Co., Ltd. is responsible for the cable network For construction, the team of Guo Zhengxing and Luo Bin, professors from the School of Civil Engineering of Southeast University, is responsible for the key technical solutions.
[Concurrent] Luo Bin, Professor of School of Civil Engineering, Southeast University
The stadium we participated in this time is called Qatar Education City Stadium. It is a cable-supported grid structure, and the prestress inside is completely independently balanced by the outer pressure ring around it. This is its biggest feature.
[Explanation] Luo Bin introduced that the cable net structure refers to a large net woven by steel cables. The traditional construction steps are to install the surrounding columns first, build a temporary support frame on the stand, and then assemble the house on the columns and support frame. The upper grid of the cover structure, and finally the lower cable net construction.
[Concurrent] Luo Bin, Professor of School of Civil Engineering, Southeast University
We have carried out a series of research (work) and adopted some innovative construction methods. This time we first construct the cable net, and through traction and lifting, we will lift the cable net to a high altitude, and then directly hoist the roof structure on this On the supporting cable net, this greatly simplifies the difficulty of on-site construction.
[Explanation] Through the comprehensive application of a series of research results and the refined construction of the construction unit, the research team of Southeast University has achieved a high degree of consistency in the integration of prestressed design and construction, ensuring structural safety in the process and saving cables Cost of materials and construction measures.
[Concurrent] Luo Bin, Professor of School of Civil Engineering, Southeast University
Generally, domestic construction takes nearly three and a half months, so in our overseas projects, we have successfully completed the construction of the cable net in two months.
[Explanation] The reporter learned that Guo Zhengxing, director of the Institute of Civil Engineering Construction of Southeast University, as an expert in cable structure engineering, also provided remote technical support for the construction of the cable-membrane structure of the Lussel Stadium, helping the construction party to solve the installation of the new roof cable-membrane structure some key technical issues.
Reporter Ge Yong reports from Nanjing, Jiangsu
Editor in charge: [Ji Xiang]