[ 2006-09-18 10:17 ]
steel structure of the National Stadium the main venue for the 2008
Beijing Olympic Games stood on its own yesterday after the last jack pad
taken on September 17 shows an overlook of the Bird's
"Today is the birthday for the 'Bird's
Nest,'" said Hou Zhaoxin, a top expert on the construction of 2008 Olympic
projects. "With all the supporting structures removed, the huge skeleton
of the National Stadium is able to stand on its own. The 'Bird's Nest' is
Designed by Swiss architecture firm Herzog & de Meuron,
global engineering consultant ARUP and China Architecture Design and Research Group, the
National Stadium is located on the North Fourth Ring Road in
The main body of the stadium is composed of 24 columns of trusses, which surround the bowl-shaped
stands in the stadium. The structural elements support each other and
converge into a grid formation, just like a bird's nest with interlocking
branches and twigs.
Construction started in December 2003 and the concrete work of the main
stand was completed on November 15 last year. On August 31, the steel
skeleton was welded together.
The removal of the bracketing
structures started on Thursday and was divided into seven
"During the process, 156 jacks were placed in 78 spots, and removal was
done simultaneously on three levels the outside circle, the middle circle
and the inside circle," said Li Aiqing, chairman of National Stadium
Company, owner of the project.
According to Li, the steel skeleton weighs 42,000 tons and can now bear
a load of 11,200 tons of the roof and hanging parts.
He said the entire steel structure would be completed by the end of
November and the project completed by the end of next year.
With a seating capacity of 91,000, the National Stadium will host the
opening and closing ceremonies, track and field competitions and football
finals during the Games.
truss: 构架, 桁架, 钢梁