Cable membrane structure

The cable membrane structure is a stable curved surface formed by the high-strength flexible film material subjected to the tensile and compressive action of other materials, and can bear a space structure form with a certain external load. Its shape is free, light, soft, full of strength, energy saving, safe use, etc., which makes it widely used all over the world. Membrane structure as a new architectural form began to appear internationally in the 1950s. It has been more than forty years old, especially since the 1970s, the application of membrane structure has developed rapidly. The advent of membrane structures offers architects new options beyond traditional architectural models. The membrane structure uses a membrane material instead of a traditional building material, and its weight is only one-thirtieth of that of a traditional building. Moreover, the membrane structure can fundamentally overcome the difficulties encountered when the conventional structure is realized on a large-span (unsupported) building, and can create a huge unobstructed visual space.

Its shape is free, light, flame-retardant, easy to manufacture, quick to install, energy-saving, easy to use, safe to use, etc., making it widely used all over the world. It is also worth mentioning that under the sunlight, the interior of the building covered by the film is filled with natural diffused light, and there is no contrast between the glossy surface and the shadow. The indoor visual environment is open and harmonious. At night, the lights in the building illuminate the night sky through the film of the roof, and the shape of the building shows a dreamlike effect. This type of structure is particularly suitable for large stadiums, entrance corridors, essays, public recreation and entertainment plazas, exhibition venues, shopping centers and other fields.

The tensioned Membrane Structure relies on the tensile stress of the membrane itself to form a mechanical system together with the support rod and the cable. Under the illumination of the sun, the interior of the building covered by the membrane is filled with natural diffused light, and there is no distinction between the contrasting surface and the shadow. The indoor spatial visual environment - Guangbei Beihai Resort 680 is open and harmonious. At night, the lights in the building illuminate the night sky through the film of the roof, and the shape of the building shows a dreamlike effect. The tensioned membrane structure is particularly suitable for the construction of roofs of urban landmarks, such as sports and entertainment venues, shopping malls and restaurants that require advertising effects. The city's transportation hub is the key building of the city's lifeline, and the use of functions requires the identification of the various components of the building. Therefore, in recent years, such buildings have increasingly adopted membrane structures. Building membrane materials have a service life of more than 25 years.

During use, the mechanical properties of the material are kept constant under snow or wind loads. Founded in 1973, the Student Activity Center at La Verne University in California is a 23-year-old tensile structure. Tracking tests and loading of materials and accelerating climate change demonstrate the mechanical properties and chemistry of its membrane materials. The stability indicator has dropped by 20% to 30%, but it is still working. The surface of the film is smooth and elastic, and dust and chemical particles in the atmosphere are extremely difficult to adhere and penetrate. The building film can be restored by rainwater to restore its original clean surface layer and light transmission. Tensile membrane structure Tensile structure is a self-stressing, self-supporting rod-like structure composed of a set of continuous tie rods and continuous or discontinuous pressure bars, in which "discontinuous pressure bars" The meaning is that the ends of the pressure bar do not touch each other, that is, only one pressure bar is connected to one node. Tensegrity is a structural idea first proposed by American architect RBFuller. He believes that the operation of the universe is carried out according to the principle of tension, that is, gravity is a balanced network, and each planet is an isolated point in the network.

The cable net in this structure is equivalent to the gravitational force in the universe. The independent compression bar is equivalent to the planet in the universe. In the 1960s, with the development of modern flexible building materials, the architects were the oldest from the tent. Starting from a simple building structure, the magical form - the membrane structure - was constructed. It can form different forms of structures such as single curved surfaces and multi-surfaces, which meets the architects' requirements for a high degree of uniformity in architecture and aesthetics. Flexible materials with light transmission and UV protection are widely used in some outdoor buildings and environmental essays. It is because of this feature that the nighttime lighting design gives the membrane structure a distinctive environmental signature. Beautifully shaped membranes, stainless steel fittings and fasteners, combined with light and reasonable design and strict surface treatment of steel structure, create a beautiful and well-designed membrane structure, which plays an important role in today's worldwide architectural environment design. status.

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