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The unique charm of modern membrane structure architecture in Yunnan

　　Yunnan membrane structures, as a new type of building form, have gradually emerged in the architectural field since the mid-20th century, becoming one of the main forms of large-span spatial structures. With their unique architectural shapes, excellent force characteristics, and wide range of applications, they are deeply loved by architects and owners.

　　Basic Concepts of Membrane Structures

　　Yunnan membrane structures are structural systems composed of membrane materials as the main tensile body, together with supporting components or cables. Membrane materials are usually architectural textiles composed of polyester fiber base fabric or different surface coatings such as PVDF, ETFE, and PTFE, combined with high-quality fibers, which have a stable shape and can withstand a certain load. These membrane materials not only have high strength and flexibility but also have good light transmission, self-cleaning, and fire resistance.

　　Advantages of Yunnan Membrane Structures

　　Large Span: Membrane structures are lightweight and have good seismic performance. They do not require internal support, creating a huge unobstructed visual space and effectively increasing the usable space area.

　　Artistic: Membrane structures break through traditional architectural structure types. Relying on morphology and chromatics, they can be combined with natural conditions to fully utilize architects' imaginations, creating curves and shapes that are difficult to achieve with traditional architecture.

　　Economy: Membrane materials have a certain light transmittance, reducing lighting intensity and time during the day, saving energy. At the same time, membrane structures can be disassembled and easily relocated, making them more economical, especially when constructing large-span buildings for short-term use.

　　Self-Cleaning: Membrane structures use membrane materials with protective coatings; they are not sticky, and dust falling on the membrane surface can be effectively cleaned by natural rainwater washing.

　　Short Construction Period: The cutting of membrane pieces, the production of steel cables and steel structures, etc., are all completed in the factory, reducing on-site construction time, avoiding construction overlaps, and making on-site installation quick and efficient.

　　Application Fields of Membrane Structures

　　The application fields of Yunnan membrane structures are very wide, covering almost all places requiring large-span spaces. In sports facilities, large stadiums and swimming pools often use membrane structures to meet the needs of natural ventilation and lighting. In commercial buildings, membrane structures, with their unique shapes and good commercial recognition, are widely used in large shopping malls, shopping centers, and hotels. In addition, membrane structures are also widely used in cultural and entertainment facilities, transportation facilities, industrial facilities, and landscape facilities.

　　Design Principles of Membrane Structures

　　The design of Yunnan membrane structures needs to consider multiple factors, including the nature and grade of the building, service life, function, structural span, fire protection requirements, and regional natural conditions. During the design process, it is necessary to ensure that the major principal stress of the membrane surface is less than the strength design value of the membrane material, and under long-term load action, the minor principal stress should be greater than or equal to the stress value that maintains its initial equilibrium shape. At the same time, membrane structure design should also consider that when the membrane material is damaged, the supporting structure should still maintain its own strength, stiffness, and stability.

　　Construction Technology of Membrane Structures

　　The construction technology of Yunnan membrane structures includes key steps such as pretreatment of membrane materials, manufacturing and installation of steel structures, and installation and tensioning of membrane materials. During construction, it is necessary to strictly follow the design requirements and relevant standards to ensure the accuracy, quality, and stability of the membrane structure. Especially in the installation and tensioning of membrane materials, it is necessary to use pre-tensioning technology and perform stress analysis and testing on steel cables to ensure that the tension is uniform and reasonable.

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Core technologies in the field of Yunnan steel structure processing and construction