Introduce the water cube and the film, what is the material of the membrane structure of the water c

The National Aquatics Center, also known as the "Water Cube", is located in the Beijing Olympic Park, which is the main swimming pool built by Beijing for the 2008 Summer Olympics and one of the landmark buildings of the 2008 Beijing Olympic Games. The design of the National Aquatics Center is the result of a global design competition for the "Cube of Water" ([H2O]3). The National Aquatics Center and the National Stadium (commonly known as the Bird's Nest) are located on both sides of the north end of Beijing's urban axis, forming a relatively complete image of Beijing's historical and cultural city.

The planned construction land of the National Aquatics Center is 62,950 square meters, and the total construction area of the National Aquatics Center is 65,000-80,000 square meters, of which the underground part of the construction area is not less than 15,000 square meters, and the length, width and height are 177m, 177m and 30m respectively. The National Aquatics Center started construction on December 24, 2003 and is expected to be completed and accepted by the end of 2007. The National Aquatics Center is the only Olympic venue that accepts donations from Hong Kong, Macao and Taiwan compatriots and overseas Chinese, with a budget of 100 million yuan, of which the land cost and design cost are separately funded, so the actual donation funds required are less than 900 million yuan.

The ETFE membrane material used for the first time in the Water Cube of the National Aquatics Center can best represent the "Water Cube", the shape of the "Water Cube" looks like a blue water box, and the wall looks like an irregular bubble. The material used in this bubble is "ETFE", which is often referred to as "polyvinyl fluoride". This material has excellent corrosion resistance, heat retention and self-cleaning ability.

Foreign anti-aging tests have proved that it can be used for 15 to 20 years. And this material is also strong, and it is said that people jumping on it will not damage it. At the same time, due to its own water resistance, it can use natural rainwater to complete its own cleaning, which is an emerging environmentally friendly material.

Like a "water bubble", the ETFE film has good compression resistance, and the thickness of the ETFE film is only as thick as a piece of paper, and the air pillow composed of the ETF film can even bear the weight of a car. Depending on the position of the air pillow, the outer film is distributed with uneven density plating points, which will effectively shield the sunlight directly into the museum, and play the role of shading and cooling. During the 2008 Olympic Games, the National Aquatics Center undertook swimming, diving, synchronized swimming, water polo and other competitions, with a capacity of 17,000 spectator seats, including 6,000 permanent spectator seats, and 11,000 temporary seats (to be removed after the Games) during the Olympic Games.

After the competition, the National Aquatics Center will be built into a center with international advanced level, integrating swimming, sports, fitness and leisure.

The membrane structure of the Water Cube is made of ETFE membrane, which is scientifically known as ethylene tetrafluoroethylene copolymer.

ETFE film is usually less than millimeter thick and is a transparent film. It is often made into an air cushion and used in the membrane structure. The earliest ETFE project has a history of more than 20 years, and the most famous one is the Yior Zhizhidian Garden in the United Kingdom.

ETFE membrane is a high-quality alternative to transparent building structures and has proven itself as a reliable and cost-effective roofing material in many projects over the years with its many advantages. The membrane is made of artificial high-strength fluoropolymers, and its unique anti-adhesive surface makes it highly stain-resistant, easy-to-clean and easy to clean. Usually rainwater removes the main dirt.

The full name of the Water Cube is the National Aquatics Center, located in the Beijing Olympic Park, one of the landmark buildings of the 2008 Beijing Olympic Games. It and the National Stadium are located on both sides of the north end of Beijing's central axis, forming a relatively complete image of Beijing's historical and cultural city. During the Beijing Olympics, a total of 25 world records were broken in various events held in the Water Cube.

The water cube membrane structure building is designed with ETFE membrane material, and the Chinese name of ETFE is ethylene-tetrafluoroethylene copolymer. ETFE film is usually less thick than and is a transparent film.

With a service life of at least 25-35 years, ETFE membranes are ideal for use in permanent dusty multi-layer movable roof structures. The membrane material is mostly used in two- or three-layer inflatable support structures with a span of 4 meters, and can also be increased according to the geometric and climatic conditions of special projects. The length of the membrane is based on ease of installation, generally 15-30 meters.

ETFE membranes.

Self-cleaning: The surface of the membrane structure is basically free of dust. Except in extreme weather such as sandstorms, natural precipitation is generally sufficient to keep it clean and new.

Energy-saving: More than 3,000 translucent air pillows can make most areas of the swimming center unlit during the day, and the light entering the room is the softest.

Thermal insulation: In terms of temperature control alone, the membrane structure can help the "Water Cube" save 30% of electricity.

The outer membrane structure of the "Water Cube" is made of ETFE material, which is light in texture, but the strength is beyond imagination, and it can withstand the rolling of cars after inflation; The ductility of the film is very good, and the fire resistance, heat resistance are obvious. It can be pulled to three to four times its length without breaking, and the ignition point must be above 715 degrees to burn into a hole, but it does not spread, and there is no smoke, and no burning material falls.

This is the world's first fully enclosed stadium with a large area of ETFE.

A breathing "Water Cube".

The roof of the "Water Cube" has a fan for natural exhaust, and there is also an opening in the middle of the two-layer membrane structure, which is equivalent to 8 natural vents, and the air comes in and goes out through the cavity of the roof, so that the heat in the building space is dissipated.

All the air pillows required for the outer membrane structure need to pass three inspections before they can become part of the Water Cube. The first step of inspection is in the processing plant, mainly for material inspection, heat charge inspection and appearance quality inspection of membrane materials. The second step is that the supervision will review the appearance quality of the entire air pillow at the construction site, and only agree to install it after the review is qualified.

The last step is for the supervising engineer to conduct a comprehensive inspection of the appearance quality of the air pillow, fixation, and the room height of the air pillow during the installation process.

Like the "plating point" of the stars

It is not difficult for those who have visited the National Aquatics Center to find that the "Water Cube" under the sunshine has many sparkling "glowing" highlights, like stars scattered on the surface of the Water Cube. These highlights are the plating points.

A plating point is a functional plating point. Through the plating point, the membrane structure becomes a filter of light and heat, where what is needed comes in and what is not needed goes back. The plating point changes the direction of the light, keeping the excess light and heat out of the venue, thus ensuring that the "Water Cube" does not become a huge "greenhouse bath" in hot weather.

The "Water Cube" that saves water and electricity

The "Water Cube" roof has 30,000 square meters, and rainwater can be collected by 100 meters. It has a rainwater harvesting system that collects the same amount of rainwater in a year as 100 households use in a year. Membrane structure and other related technologies make full use of natural light energy, and now use natural light for an average of 9 to 9 hours a day, which has a significant power saving effect.

ETFE (ethylene-tetrafluoroethylene copolymer) membrane material.

Do you have any ideas Take the heel needle and try it.