1. The external structure of the "Bird's Nest" is mainly composed of a giant portal steel frame composed of 24 truss columns. The design service life of the main structure is 100 years, the fire resistance rating is Grade I, the seismic fortification intensity is Grade 8, and the waterproof rating of underground engineering is 1.
2. The main building of the project is a spatial saddle-shaped oval with a length of 333 meters from north to south. The giant spatial saddle-shaped steel truss weaves a "bird's nest" structure. The total steel consumption of the steel structure is 42,000 tons, and the concrete stands are divided into upper, middle and lower floors. The concrete structure of the stand is a reinforced concrete frame-shear wall structure system, with 7 floors underground 1 floor and above ground.
3. The steel structure and the upper part of the concrete stand are completely separated, and they are not connected with each other, but are enclosed with each other in form, and the foundation sits on the connected foundation plate. The roof steel structure of the National Stadium adopts a double-layer membrane structure, that is, a transparent upper ETFE membrane fixed between the upper chords of the steel structure and a translucent lower PTFE sound-absorbing ceiling fixed under the lower chords of the steel structure and the inner ring side wall.
First, the design concept
1. The National Stadium Design Outline requires that the design of the National Stadium should fully reflect the idea of sustainable development, adopt the world's advanced and feasible environmental protection technologies and building materials, and make maximum use of natural ventilation and natural lighting. Through the establishment and implementation of the environmental management system, the architectural function and performance of the national stadium will be improved, and the concept of green Olympics will be permanently implemented.
2. Advanced energy-saving design and environmental protection measures have been adopted in the construction of the National Stadium, such as good natural ventilation and natural lighting, comprehensive rainwater recovery, utilization of renewable geothermal energy and application of solar photovoltaic power generation technology.
A special rainwater recovery system is installed at the top of the "Bird's Nest", and the collected rainwater will eventually become recycled water that can be used for greening, flushing toilets, fire fighting and even washing runways. Many advanced green environmental protection measures have made the National Stadium a veritable large-scale "green building".
3. It is reported that the concept of thrifty hosting the Olympic Games and sustainable development has been running through the design of the Bird's Nest from the beginning to the deepening of the design process, and the balance between permanent facilities and temporary facilities is fully considered on the premise of meeting the Olympic functions. According to the requirements, the Bird's Nest has 654.38+million seats, of which 80,000 are permanent and the other 20,000 are temporarily added during the Olympic Games.
4. In the design, the function of "Bird's Nest" is combined with the future orientation of surrounding areas and even the long-term development planning of the whole city. According to the determined planning scheme, the central area of the Olympic Park where the "Bird's Nest" is located will become a civic activity center integrating sports competitions, conferences and exhibitions, culture and entertainment, business and leisure shopping.
As the main stadium of Beijing Olympic Games, the National Stadium adopted solar photovoltaic power generation system. At present, the technology of solar photovoltaic power generation system is at the advanced level in the world. It is installed on the main channel of the National Stadium 12, with a total investment of100,000 yuan and a total capacity of 130 kW, which will play a good supplementary role in the power supply of the National Stadium.
Second, function
The National Stadium (the "Bird's Nest") is the main venue of the Beijing 2008 Olympic and Paralympic Games, and will host the opening and closing ceremonies of the Beijing Olympic and Paralympic Games, track and field, football and other related activities. The interwoven stadium facade and geometric building base are integrated, just like "trees and roots" to form a huge architectural woven body.
2. The National Stadium is used to host major international, regional and domestic events in China, including some non-traditional sports events. By attracting the best domestic and foreign sports activities and performing arts institutions, excellent services and advanced management technology in China, the National Stadium will become the best large-scale sports activities and performance venue in China, and will also become a new window for other countries in the world to see China.
3. The Bird's Nest actively participated in the "Earth Hour" lights-out activities. It is open to all educators free of charge on Teachers' Day, receives officers and soldiers who are studying during National Day, cooperates with the China Red Cross Foundation to provide orphans with free play opportunities in the snow and ice season, and plans to sponsor the police pension fund with the ticket proceeds from corporate public welfare projects.
4. Under the theme of "Humanism, Green, Science and Technology", Bird's Nest Public Welfare will establish strategic cooperation with governments and public welfare organizations in the fields of sports, culture, environmental protection and social welfare. , support teenagers, tens of thousands of tourists every day and a large-scale competition platform, and promote it with the government and institutions in combination with the media. Public welfare behavior and public welfare activities have a wide influence and enjoy a good reputation in all walks of life.
Third, value recognition.
The new brand image of "Bird's Nest" clearly explains the change of positioning and fully demonstrates its:
First, appreciate the architectural beauty of the "Bird's Nest" and feel the glorious spiritual hall of the Beijing Olympic Games;
Second, first-class venues for hosting top international events;
Third, the first-class venues that undertake large-scale cultural performances;
Fourthly, through gradual transformation and development, fully tap the commercial, exhibition and communication functions of the "Bird's Nest" and gradually become a new orientation of a large-scale comprehensive international sports and cultural exchange and exhibition center integrating sports competitions, cultural performances, exhibition services, catering, tourism, shopping and leisure.
Extended data:
sources of fund
1. The national stadium project adopts PPP (private+public+partnership) mode. It is a project company jointly established by Beijing State-owned Assets Management Co., Ltd. and China CITIC Group Consortium, which is mainly responsible for the investment, financing, construction, operation and management of the National Stadium.
CITIC Consortium contributed 42%, and Beijing State-owned Assets Management Co., Ltd. gave 58% financial support on behalf of the government. CITIC Consortium also owns the franchise right for 30 years after the Olympic Games.
2. Compared with the United States and other countries with mature experience in venue sponsorship, venue sponsorship in China has been in the initial stage of development. With the east wind of the Olympic Games, the development of sports industry in China will promote the growth of venue sponsorship market.
By developing a professional and efficient sponsorship platform, the National Stadium has attracted a large number of powerful potential customers to participate in the construction and operation of the National Stadium, which has brought infinite vitality to the development of the stadium and enabled sponsors to display their high-quality products and corporate image through the window of the National Stadium.
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