Recently, super typhoon Sulla hit the coast of Guangdong, which had a huge impact on cities such as Shenzhen, Zhuhai, and Hong Kong. Work and classes were suspended throughout Shenzhen, and many trees were blown down. So how did ETFE buildings perform in the typhoon? Can it withstand the damage of the typhoon?

The ETFE film used in general construction is only about 200~250um, but this thin layer of transparent film has a compressive strength of more than 40MPa and has extremely strong tear resistance. It can be used without being poked by sharp objects. The physical properties are comparable to steel of the same thickness specification. The design has been tested. After inflating, the ETFE air pillow membrane can easily lift the car and the membrane material is not damaged at all. In the actual case of a single-layer membrane, the membrane surface can still stand normally without pressure (65kg). ), and the membrane material can be fully restored after the person leaves.

The more popular design at present is to use light ETEF and heavy steel structure together, which can produce a very wonderful architectural effect. Especially in coastal monsoon areas, wind resistance must be considered when designing buildings, so the ETFE membrane structure buildings we see generally have very thick and strong skeleton steel structures. If the typhoon wind cannot tear the ETFE membrane, and the supporting structure is strong enough, the typhoon cannot directly damage the building.

From the above two points, ETFE membrane structure has strong typhoon resistance performance. Of course, fighting the wind requires skills, and recklessness will definitely not work. For example, when there is a strong wind warning for an ETEF membrane structure air pillow, it is necessary to promptly and appropriately indicate the internal pressure of the air pillow. When designing the membrane structure, the fluid stress of the shape must also be considered, which shapes will produce larger lifting force when the wind blows. Be sure to choose carefully.

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