It is very advantageous to use the membrane structure planning method to plan the sunshade, whether in appearance or practicality. Membrane structure building has a more "form finding" process in structural planning. It needs to first recognize several shapes under the initial load, that is, the structural system can reach a balance position under the self weight of the membrane and the prestress effect of cables and cable components. At the beginning of the planning stage, it is necessary to recognize several shapes of the building before applying prestress to make the membrane surface bear tension, so that its shape can be changed accordingly. Through the continuous adjustment of prestress, we can finally reach several shapes we need.
Advantages of membrane structure sunshade materials
Because membrane structure works are mostly used in some large buildings such as stadiums, when choosing membrane structures to manufacture closed buildings, the single-layer membrane materials used have the same thermal insulation properties as brick walls, and are better than glass. The interior of a building can also adopt various methods to improve the internal temperature like other buildings. For example, if a thermal insulation layer is added, the lining material has the characteristics of thermal insulation, non condensation and light transmittance. Membrane structure landscape
The tensile film material also has very good flame retardancy and high and low temperature resistance, and can withstand temperature changes between - 73 ℃ and 232 ℃. The optical refractive index of the surface of the tensile film material can reach more than 70, and the transmittance is 25. Therefore, membrane structure buildings do not need artificial lighting to maintain in the daytime. And the sunlight directly from the roof provides living conditions for plants, which can be considered as the ecological environment created indoors.
Membrane structure building is a representative and promising building mode in the 21st century. It breaks the way of pure linear architectural style. With its beautiful curved shape, simple, bright, rigid and soft, force and beauty, it gives people a refreshing feeling, and together provides architects with greater imagination and creative space.
It has environmental protection, light transmission and self-cleaning properties. PVDF (polyvinylidene fluoride) coating or titanium dioxide coating is selected for the surface of the film material, which has a good heat insulation effect. It can reflect 70% of the solar heat energy. The film material itself absorbs 17, conducts 13 heat, but the light transmission rate is more than 20. Its brightness can still be kept 70 after 10 years of direct sunlight.
Covering large span space
The membrane material used in the membrane structure is about one kilogram per square meter. Because of its light weight, plus the selection of high-strength materials for steel cables and steel structures, it is simple and reasonable with the force bearing system - most of the force is transmitted by axial force, so the membrane structure is suitable to span large spaces to form an open large-span structure system without columns.
(All the above content comes from the network. If you have any questions, please contact me to delete it)
