The membrane structure has good self-cleaning property: the surface of the membrane data used for building has no static electricity, and has no adsorption force to dust, so it is not easy to get stuck with dust. Even if a little dust falls, it is easy to be removed by wind and rain. Therefore, membrane structure buildings always appear in our horizon with bright and clean surfaces.
Large span of membrane structure: the membrane structure can be built into a large-span building without supporting columns. In some large public places, stadiums and gymnasiums, it is required to form a large-area open space without columns, which poses a big problem to architects. The problem is greatly simplified by choosing a membrane roof. Because the membrane per unit area is very light, the load bearing of the skeleton is greatly reduced. If necessary, a very light roof can be supported by a small pressure difference of the air in the room surface. Membrane structure landscape
Good processability of membrane structure: the membrane material is a complex spatial surface that is difficult to manufacture with flexible data and rigid data, so it is more convenient to select membrane structure. The membrane material can be supported by the steel skeleton or tensioned by the rigging to generate various spatial surfaces. The curved surface generated by the membrane structure is smooth and soft, and can clearly reflect the beauty of the forced forming of the membrane.
Membrane structure landscape architecture Short construction period: skeleton manufacturing and fabric processing are all carried out in the factory, which greatly shortens the construction period on the site and reduces the cross operation and mutual interference of multiple types of work on the site.
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 determine several shapes under the initial load, that is, a position where the structural system can reach balance 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 the various shapes of the building before applying prestress to make the membrane accept tension, so that its shape can be changed accordingly. After all, we can achieve the various shapes we need after constantly adjusting the prestress.
Since the membrane material itself has no compression and flexural stiffness, and the shear strength is very poor, it needs to pass through the curvature of the membrane surface and the prestress in it to improve its stiffness and stability. As for membrane structure, there is no stress at any time. Therefore, the shape of the zigzag surface of the membrane must finally meet the mechanical balance under some boundary conditions and some prestress conditions, and load analysis and cut analysis should be based on this.
The form finding and analysis methods of membrane structures mainly include dynamic relaxation method, force density method and finite element method. The loads considered for membrane structures are usually wind and snow. The deformation of membrane data under load effect is relatively large, and the load dispersion will change with the change of shape. Therefore, in order to accurately calculate the deformation and stress of the structure, several nonlinear methods are used. Another purpose of load profiling is to determine the initial preload of the cable and membrane.
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