The National Stadium Bird's Nest is the main stadium for the 20xx Beijing Olympic Games. The design of the giant stadium completed by Herzog, De Mellon and Chinese architect Li Xinggang, who won the Plic Prize in 20xx, was designed by Ai Weiwei as a design consultant. Form is like a " nest" that breeds life. It is more like a cradle that holds human hopes for the future. Designers didn't do any extra work on the national stadium, but frankly exposed the structure, thus naturally forming the appearance of the building.
" Bird's Nest" is mainly composed of huge portal steel frames with 24 truss columns. The top surface of the National Stadium is saddle - shaped, with a major axis of 332.3 meters, a minor axis of 296.4 meters, a highest point of 68.5 meters and a lowest point of 42.8 meters.
The design of the Bird's Nest fully embodies the humanistic care. The bowl-shaped seats encircle the folding structure of the stadium, and the upper and lower floors are strewn at random. No matter where the audience sits, the distance of sight from the center of the stadium is about 140 meters. The sound-absorbing film material used in the lower layer of the " Bird's Nest", the sound-absorbing material arranged on the steel structure member, and the electroacoustic sound amplification system used in the stadium, these three layers of " special devices" make the index of speech intelligibility in the " Bird's Nest" reach 0.6 - this number ensures that the audience sitting in any position can hear the broadcast clearly.
The designers of the Bird's Nest also used fluid mechanics to simulate the natural ventilation of 91,000 people watching the competition at the same time, so that all spectators can enjoy the same natural light and natural ventilation. More than 200 wheelchair seats have also been set up for the disabled in the auditorium of the Bird's Nest.
These wheelchair seats are slightly higher than ordinary seats, ensuring that disabled people have the same vision as ordinary spectators. During the Games - time, hearing AIDS and a wireless broadcasting system will be provided to provide personalized services for people with hearing and vision impairments.
Many architectural experts believe that the " Bird's Nest" will not only set up a unique and historic landmark for the 20xx Olympic Games, but will also have pioneering significance in the development of world architecture and will provide historical witness for the development of Chinese and world architecture in the 21st century.