Is the water cube open-air?

Membrane structure architecture is the most representative brand-new architectural form in 2 1 century, and has become one of the main forms of long-span space architecture so far. It combines architecture, structural mechanics, fine chemical industry, material science and computer technology, and constructs a symbolic spatial structure. It not only embodies the beauty of the structure, but also fully shows the architect's vision and enjoys the romantic space of nature. In the architectural design of the 2008 Olympic Games, the application of membrane structure has been perfectly reflected. "Water Cube" is the largest membrane structure project in the world, and the most advanced environmental protection and energy-saving ETFE (tetrafluoroethylene) membrane material is used outside the building. Tan, general manager of the National Gymnasium Project, revealed that the life of this material is more than 20 years, but it will actually be longer than this, and people can walk on it, which feels particularly good. At present, only three companies in the world can complete this membrane structure. The whole building of "Water Cube" consists of more than 3,000 air pillows of different sizes and shapes, covering an area of 654.38+10,000 square meters, ranking first in the world. In addition to the ground, the exterior adopts membrane structure. The successfully installed air cushion will be inflated into "bubbles" through the inflation pipe installed on the steel frame in advance, and the whole inflation process will be intelligently monitored by the computer, and the "bubbles" will be kept in the best state according to the air pressure, lighting and other conditions at that time. This kind of film material similar to "bubble bag" has self-cleaning function, which makes the film surface basically dust-free. Even if there is dust, natural precipitation is enough to make it clean as new. In addition, the membrane material has good compression resistance, so that people can "play trampoline" on it, and "it will not be crushed if a car is put on it normally". Once the adventitia breaks, according to the emergency plan, the damaged adventitia can be repaired or replaced within 8 hours. The glittering and translucent coat of "Water Cube" is also dotted with numerous white bright spots, called plating spots, which can change the direction of light and have the effect of heat insulation and astigmatism. In addition, the "Water Cube" covers an area of 7.8 hectares without using a steel bar or a piece of concrete. Its wall and ceiling are connected by thin steel pipes, with1.2000 nodes. Only 2.4 mm thick membrane structure air pillow covers the whole building like skin. The largest air cushion is about 9 square meters, and the smallest is less than 1 square meter. Compared with glass, it can penetrate more sunlight and air, thus keeping the swimming pool at a constant temperature and saving electricity by 30%.

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