The National Stadium (referred to as "Bird's Nest") is located in the south of the central area of Beijing Olympic Park, with a building area of 258,000 square meters and an area of 204,000 square meters. It can accommodate 965,438+0,000 people, including about 80,000 fixed seats. The National Stadium project is a super-large sports building, and the design service life of the main structure is 100 years. The main building is oval, 333 meters long from north to south, 296 meters wide from east to west, and the highest point is 69 meters high. The National Stadium was started on February 24th, 2003 and completed on June 28th, 2008.

The National Stadium is located on a pedestal platform that slopes slowly from the ground. Visitors can reach the stadium from the Olympic Park along the pedestal platform. The north side of the pedestal is a sunken warm-up venue, which is connected with the home competition venue through the athletes' passage. The complex subsidiary part of the National Stadium and the post-game commercial layout are under the rising ground, which makes the access mode of different people more reasonable, while maintaining the clear, pure and complete appearance of the main building.

There are seven floors above the base of the stadium, with audience service facilities, media work area and VIP reception area. There are three floors and zero-floor inner ring road, parking lot and a large number of functional rooms under the base. The bowl table is divided into upper, middle and lower floors, and a box and its seating area are set between the middle and lower floors.

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. Below the "Bird's Nest" football field is a 3 12 well ground source heat pump system. It absorbs the heat contained in the soil in winter and provides heat for the "Bird's Nest" through underground heat exchange tubes. In summer, it can provide cold energy for the "Bird's Nest" by absorbing the cold energy stored in the soil, thus saving a lot of power resources.

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".

Extended data

During the Beijing Olympic Games, the National Stadium, as the main venue, undertook the opening and closing ceremonies, track and field events, football finals and other activities. The wonderful opening and closing ceremonies complement each other with the magnificent structure of the Bird's Nest, which makes the world amazed. Bolt, Isinbayeva and other outstanding athletes have made record achievements in the Bird's Nest.

The main body of the National Stadium is a "bird's nest" shape, which is woven by a series of steel trusses around the bowl-shaped seating area. The spatial structure is novel, the building and structure are integrated into one, unique and beautiful, with strong shock and visual impact, which fully embodies the beauty of natural harmony.

The steel structure of the National Stadium is one of the largest sports buildings in the world. Its roof maintenance structure is a double-layer membrane structure, that is, a transparent upper ETFE membrane is fixed between the upper chords of the steel structure, and a translucent lower PTFE sound-absorbing ceiling is fixed below the lower chords of the steel structure and the inner ring side wall.

Refer to Baidu Encyclopedia-National Stadium