A brief introduction to the Bird's Nest?

The National Stadium ("Bird's Nest") is located in the south of the central area of ??Beijing Olympic Park, with a construction area of ??258,000 square meters, an area of ??204,000 square meters, and a capacity of 91,000 spectator seats, including about 80 fixed seats. , 000. The National Stadium project is a special-grade sports building with a designed service life of 100 years. The main building is an oval shape with a length of 333 meters from north to south and a width of 296 meters from east to west. The highest point is 69 meters high. The construction of the National Stadium started on December 24, 2003 and was completed on June 28, 2008.

The National Stadium is located on a base platform that gently slopes from the ground. Spectators can reach the stadium from the Olympic Park along the base platform. On the north side of the base is a sunken warm-up venue, which is connected to the competition venue in the home court through the athletes' tunnel. The complex ancillary parts of the National Stadium and post-game commerce are arranged under the raised ground, making the entry of different groups more reasonable while maintaining the clarity, purity and integrity of the appearance of the main building.

The seventh floor above the stadium base is equipped with spectator service facilities, media work areas and VIP reception areas. The third floor below the base is equipped with a zero-floor internal loop, a parking lot and a large number of functional rooms. The bowl-shaped stands are divided into three levels: upper, middle and lower, with boxes and seating areas set between the middle and lower stands.

The National Stadium adopted advanced energy-saving design and environmental protection measures during its construction, such as good natural ventilation and natural lighting, comprehensive recovery of rainwater, utilization of renewable geothermal energy, application of solar photovoltaic power generation technology, etc. . Underneath the football field in the "Bird's Nest" are 312 geothermal heat pump system wells. It uses underground heat exchange tubes to absorb the heat contained in the soil to heat the "Bird's Nest" in winter; in summer, it absorbs the cold energy stored in the soil to provide cooling to the "Bird's Nest", which can save a lot of electricity resources.

A special rainwater recycling system is installed on the top of the "Bird's Nest". The collected rainwater is eventually turned into recycled water that can be used for greening, toilet flushing, firefighting and even runway flushing. Many advanced green environmental protection measures have made the National Stadium a veritable large-scale "green building".

Extended information

During the Beijing Olympics, the National Stadium served as the main venue and hosted the opening and closing ceremonies, track and field events and football finals. The wonderful opening and closing ceremony performances complemented the majestic and majestic structure of the Bird's Nest, which amazed the world. A number of outstanding athletes such as Usain Bolt and Isinbayeva have achieved record-breaking performances at the Bird's Nest.

The main body of the National Stadium is a "Bird's Nest" shape made up of a series of steel trusses woven around a bowl-shaped seating area. The spatial structure is novel, the architecture and structure are integrated, unique, beautiful, and highly shocking. and visual impact, fully embodying the beauty of natural harmony.

The National Stadium steel structure is one of the longest-span sports buildings in the world. Its roof maintenance structure is a double-layer membrane structure covered with a steel structure, that is, a transparent upper ETFE fixed between the upper chords of the steel structure. membrane, and a translucent lower PTFE acoustic ceiling fixed under the lower chord of the steel structure and on the side wall of the inner ring.

Reference material Baidu Encyclopedia - National Stadium