The wrinkling on the membrane surface of the membrane structure car shed refers to the deformation of the membrane material outside the surface or outside the surface under uniaxial tensile stress. Generally speaking, it can be divided into two types: one is the relaxation of the membrane material caused by the disappearance of surface tension in one direction, which is called structural wrinkling; the other is caused by defects in the membrane production process, improper thermal bonding, or improper packaging folding, which is called material folding.
The impact of wrinkles on the structure and performance of membrane structure car sheds cannot be ignored, which is not only reflected in the visual effect. The appearance of wrinkles can lead to the redistribution of pre tension on the membrane surface, causing stress in some areas of the membrane surface to be lower than the design value, while stress in other areas is higher than the design value.
When the membrane stress is higher than the design value, it will lead to greater strain and sudden changes, and even local tearing and wrinkles of the membrane can affect the aesthetics and drainage performance of the membrane structure. In the construction of membrane structures, wrinkles should be avoided as much as possible under normal long-term load combinations.
The occurrence of material wrinkles is rare, usually due to problems encountered by membrane fabric manufacturers, which are difficult to solve the day after tomorrow. In actual production, the processing and installation of membrane structures are the main reasons that affect membrane structure wrinkles. Construction personnel should pay attention to this aspect, strengthen specific measures, reduce membrane wrinkles in membrane structures, and make them beautiful.
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