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Design Considerations for Membrane Structure Carports in Yunnan
1. Note the natural conditions
Yunnan membrane structure When conceiving schemes at the conceptual design stage of a car park, it is necessary to carefully analyze the natural conditions of the project location.
(1) Areas with frequent rain and snow
For areas with frequent rain and snow, it is not advisable to adopt a curved surface with many undulations and uneven snow and water accumulation. The membrane surface should have a large slope to facilitate drainage.
(2) Areas frequently affected by typhoons
For areas frequently affected by typhoons, it is not advisable to adopt shapes with large differences in stiffness or local cantilevers. When designing the curved surface, avoid making the Yunnan membrane structure car park surface flat. Otherwise, a large pre-tension must be applied to form the required curved surface, which will also make the membrane surface stressed in bending and unable to effectively utilize the tensile strength of the membrane material. The curved surface should also be smooth and continuous, avoiding turning points and sharp corners, otherwise these areas of the membrane surface are prone to wrinkles or stress concentration. The membrane surface should not be placed directly on the wall. When designing in typhoon-prone areas, membrane materials with high tear strength should be selected.
2. Note the membrane material strength
The design of Yunnan membrane structure car parks should ensure that the membrane material strength has sufficient safety margin to guarantee that the membrane surface can bear loads normally after tensioning.
3. Note the node construction
At the same time, the node construction should consider the possibility of secondary tensioning due to membrane surface relaxation caused by material creep, connection loosening, and membrane surface water accumulation. The node connectors should have sufficient strength and stiffness to prevent failure. The outer edges of the connectors should be processed to make them smooth and without sharp corners to prevent local warping and scratching of the membrane material. For nodes with rotational requirements, the construction should ensure free rotation.
4. Note the cable strength
Cables are important components of membrane structure car parks. The rational use of cable strength and the accurate control of cable length are crucial for membrane surface formation and structural safety. The design should prevent the overall structure from being endangered due to insufficient cable strength.
5. Note waterproofing and drainage
The inner membrane nodes of double-layer membrane structure car parks are generally not waterproofed. For some important projects, appropriate waterproofing and drainage measures can also be considered to prevent rainwater from entering the interior in case of damage to the outer membrane, causing significant losses.
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Room 308, Building 3, No. 18, Courtyard, Central Park, China Resources Gold Land, Wujia Dam, Guandu District, Kunming City
Copyright: Yunnan Tiehan Steel Structure Engineering Co., Ltd.
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