The largest single-layer two-way orthogonal saddle-shaped cable net roof among stadiums in the world belongs to the National Speed ??Skating Arena.
The "Ice Ribbon" of the National Speed ??Skating Stadium adopts the world's largest single-layer two-way orthogonal saddle-shaped cable net roof, and the amount of steel used is only a quarter of that of a traditional roof.
The National Speed ??Skating Stadium is the first Winter Olympics speed skating venue in the world to use carbon dioxide transcritical direct cooling ice making technology. This technology is currently the most advanced and environmentally friendly ice-making technology in the world. The carbon emission value is close to zero and the energy efficiency of ice-making is greatly improved.
Since the ice surface area of ??the National Speed ??Skating Hall reaches 12,000 square meters, this ice has become the world’s largest multi-functional full ice surface using carbon dioxide transcritical direct cooling ice making technology.
After the game, the ice surface can be refrigerated by zones, and the temperature of each piece of ice can be controlled individually to achieve "simultaneous operation and different use" of the venue. Two key design solutions, the integrated design of the venue's ice-making system and the ice plate structural design, have been patented.
In order to create the “fastest ice”, the National Speed ??Skating Hall’s ice slab construction was constantly improving, and it took more than 60 days to complete 8574 welds of the ice-making steel pipes, resulting in a concrete ice slab with a different level. It is about 4 mm and is very smooth; the temperature difference on the ice surface is controlled within 0.5 degrees Celsius, which is conducive to athletes creating good results.
Functional Planning
The National Speed ??Skating Arena is planned to be located on the south side of the Tennis Center in Beijing Olympic Forest Park (formerly the 2008 Beijing Olympics Hockey Stadium). After completion, it can be used for ice hockey, curling, and skating. The speed skating project is a comprehensive venue. It is understood that after the Winter Olympics, the National Speed ??Skating Hall will operate non-stop for 365 days, becoming a sports and fitness venue similar to the Water Cube and the Bird's Nest that has both social service functions and corporate operations.
The National Speed ??Skating Hall has a 400-meter slide and 12,000 seats. The ice competition area of ??the National Speed ??Skating Stadium plans three 400-meter speed skating competition tracks, one speed skating competition practice track, one 60-meter by 30-meter multi-functional ice rink, and one 61-meter by 31-meter multi-functional ice rink. Field and 1 activity ice rink.