Although the Beijing Winter Olympics is over, I can still introduce one of the ETFE membrane structure venues to you. Beijing Winter Olympic Tower – HAITUO TOWER is a high-rise building project located in Yanqing District, Beijing, China. It is one of the important venues for the 2022 Beijing Winter Olympics. The building is 258 meters high and has 30 floors. It uses a large area of ​​ETFE film to cover the building facade. It has multiple functions such as high-end office, business and sightseeing.

The building looks like a huge ice tower, symbolizing the spirit of ice and snow sports in the Winter Olympics. At the same time, the building also uses a large number of green environmental protection technologies to make it have higher environmental protection performance while meeting functional requirements.

The six “ice crystal ribbons” surrounding the tower body, each ribbon is spliced ​​by steel pipes, and a single ribbon weighs 45 tons. The ribbons are all covered with transparent ETEF film stretched outside the steel structure and designed with built-in LED light sources. The ETFE tensile membrane was processed by an innovative double-layer stacking method, and white double-layer bidirectional cables were implanted. Several irregular white cables were arranged crosswise in two layers, with only a 5cm space between the two layers. The ETFE membrane was installed in the 5cm space to create an “ice crack” effect and ensure that the membrane structure would not be deformed by strong winds.

The ETFE film in some places in the HAITUO TOWER project even reached 50 meters wide, which is one of the largest single ETFE films in the world. In addition, it is reported that the thickness of the ETFE film used is between 0.2 mm and 1.5 mm. ETFE film is a plastic material with excellent performance. In the WINTER OLYMPIC TOWER – HAITUO TOWER project, ETFE film is used as a covering material for the building facade. It can effectively resist strong ultraviolet radiation and harsh climate environment, which can not only improve the lighting effect of the building, but also improve the environmental protection performance and construction efficiency of the building. It is a very excellent building material.

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