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.

褶皺對膜結(jié)構(gòu)車棚的結(jié)構(gòu)和性能的影響不可忽視，這不僅體現(xiàn)在視覺效果上，褶皺的出現(xiàn)會導(dǎo)致膜表面預(yù)張力的重新分布，使得膜表面某些區(qū)域的應(yīng)力低于設(shè)計(jì)值，而其他區(qū)域的應(yīng)力高于設(shè)計(jì)值。

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.

當(dāng)膜應(yīng)力高于設(shè)計(jì)值時(shí)，將導(dǎo)致更大的應(yīng)變和突變，甚膜的局部撕裂，皺紋也會影響膜結(jié)構(gòu)的美觀和排水性能，在膜結(jié)構(gòu)的施工中，在正常的長期荷載組合下，應(yīng)盡量避免褶皺。

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.

材料褶皺的情況很少出現(xiàn)，一般是由于膜布生產(chǎn)廠家所出現(xiàn)的問題，后天很難解決。在實(shí)際生產(chǎn)中，膜結(jié)構(gòu)的加工和安裝是影響膜結(jié)構(gòu)褶皺的主要原因，施工人員應(yīng)重視這個方面，加強(qiáng)具體措施，減少膜結(jié)構(gòu)的膜褶皺，使膜結(jié)構(gòu)美觀。

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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