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Large span spatial steel structure

2020-10-23 04:58:55
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   In recent years, spatial structures represented by grid structures and latticed shells have continued to develop in large numbers, not only for civil buildings, but also for industrial factories, hangars, terminal buildings, sports halls, American standard H-shaped steel exhibitions, grand theaters, museums, etc.

Industrial factories with a large amount of steel structure usage, such as Caofeidian Steel Base and Shanghai Jiangnan Shipbuilding Base, and representative venues such as the National Stadium for the 2008 Beijing Olympics, the 2010 Shanghai World Expo (with a steel structure usage of over 300000 tons), the 2010 Asian Games (Guangzhou), the Jinan National Games, the Shenzhen Universiade, and the Nanyang National Farmers' Games, have built sports stadiums and gymnasiums.

According to the statistics of the Space Structure Branch of the China Steel Structure Association, the production of grid frames and grid shells has been in a stable state in recent years, with 1500 units per year, about 2.5 million square meters, and about 70000 tons of steel used. The steel used for steel structures is characterized by a variety of varieties, diverse specifications, large usage, and high strength. The main varieties include Q235C, Q345C, 390D (for underground embedded piles), Q345GJ, Q420, Q460, and so on.


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With the deepening of research and development of tension structures for suspension cables and membranes and the promotion of engineering applications. The application of prestressed spatial structures has begun. A large number of new steel structure buildings and structures have emerged, including the Hangzhou Leifeng Tower, Hainan Millennium Tower, Guangzhou New TV Tower (with a height of 610 meters and a steel consumption of 40000 tons), and the Kunming World Expo Art Square membrane structure.

Suspension cable and membrane structures are currently in the development stage and in small quantities. There are already several membrane structure engineering companies in China, responsible for the design and construction of many sports venues, airports, parks, and street landscapes. At present, high and middle school barrier film materials still need to be imported (such as PTFE and ETFE).

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