Hello everyone, welcome to the National Stadium " Bird's Nest". We are going to enter the " Bird's Nest" here today as the main stadium for the 29th Olympic Games in 20xx. The project covers a total area of 21 hectares and a construction area of 258,000m2.
There are about 91,000 seats for spectators in the venue, of which about 11,000 are temporary seats. The Olympics, Paralympics Opening and Closing Ceremonies, Track and Field Events and Football Finals were held. After the Olympics, it became a large-scale professional place for Beijing citizens to participate in sports activities and enjoy sports entertainment, and became a landmark sports building and Olympic heritage.
Look at the steel net above, the steel structure of the " Bird's Nest" is 420xx tons in total weight, with a maximum span of 343 meters, and is enclosed with a huge steel net covering the stadium of 90000 people. The sightseeing staircase naturally becomes an extension of the structure. The pillar disappears, the evenly stressed net has no clear direction like a branch, making people feel that every seat is equal, and staying in it is like returning to the forest.
Filter the sunlight into a diffuse inflatable membrane, thus leaving the stadium free from the shadow of sunlight. The whole terrain is 4 meters high and the interior is used as an auxiliary facility, thus avoiding the huge investment spent by the lower earth digger. The " Bird's Nest" adopts today's advanced construction technology. All the projects have 20 or 30 technical problems, among which the steel structure is unique in the world.
All right, now let's have a free tour.
Hello everyone, let me tell you about the basic situation of " Bird's Nest". . " Bird's Nest" is the main stadium of the 29th Olympic Games in 20xx. The project covers a total area of 21 hectares and a construction area of 258,000 000m2.
There are about 91,000 seats for spectators in the venue, of which about 11,000 are temporary seats. The Olympics, Paralympics Opening and Closing Ceremonies, Track and Field Events and Football Finals were held. After the Olympics, it became a large-scale professional place for Beijing citizens to participate in sports activities and enjoy sports entertainment, and became a landmark sports building and Olympic heritage.
Look at the steel net above, the total weight of the " Bird's Nest" steel structure is 4. 20,000 tons, with a maximum span of 343 meters, and a stadium surrounded by a huge steel net and covering 90,000 people; The sightseeing staircase naturally becomes an extension of the structure.
The pillar disappears, the evenly stressed net has no clear direction like a branch, making people feel that every seat is equal, and staying in it is like returning to the forest. Filter the sunlight into a diffuse inflatable membrane, leaving the stadium free from the shadow of sunlight.
The whole terrain is 4 meters high and the interior is used as an auxiliary facility, thus avoiding the huge investment spent by the lower earth digger. " Bird's Nest" adopts the advanced construction technology today, and all the projects have 20 or 30 technical problems, among which the steel structure is unique in the world. All right, I've finished my introduction to the " Bird's Nest".
Next, let's go and visit the " Bird's Nest".
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.
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