Membrane structure parking shed The selection of anti-corrosion measures and anti-corrosion materials should be carried out according to the environment of the membrane structure site during the installation phase, and the anti-corrosion conditions of the supporting structure, as well as the plywood, cable and bolt connection should be checked on time. In case of corrosion, the anti-corrosion coating shall be removed first, and then the anti-corrosion treatment of the surface shall be done again.
Membrane surface repair: the membrane surface may be slightly damaged unintentionally or intentionally during installation. At this time, repair can be carried out directly on site. After normal use, the base fiber cloth and coating shall be checked in time. Small cracks and holes can be repaired directly by welding patches on the outside of the film surface. The patch must be rounded to remove the dust, oil stain and grease on the welding surface.
Cleaning of membrane surface: many people believe that timely cleaning of five kinds of dirt on membrane surface can extend the normal service life of membrane materials, but the actual situation is that most membrane surfaces do not need manual cleaning. At the beginning of the design of membrane structure parking shed, the self-cleaning property of membrane materials and the shape of membrane surface were designed to be difficult to accumulate dirt. If the cleaning method is improper, its service life will be shortened.
Water accumulation and drainage: If water accumulation occurs in the membrane structure parking shed, the water or snow must be removed immediately. If the rain and snow weather continue, the accumulated water will damage the membrane material. Therefore, the space covered by the membrane surface should be closed to the public and immediate measures should be taken to avoid new water accumulation. Due to the deformation of membrane structure under load, ponding may occur at the place where the slope of membrane surface is small.
Membrane material replacement: During the whole use period of membrane structure, all processing drawings shall be kept, so that membrane replacement is particularly simple. For replacement construction, the compensation value can only be determined by retesting the new membrane material. If the diaphragm material with the original width is out of stock, it needs to be cut again. It may also be necessary to re form the structure according to the specific dimensions of the existing support structure.
Pre tensioning and secondary tensioning: the stability of membrane structure depends on the maintenance of prestress in membrane structure, and the prestress level affects the deformation of membrane under load. Because the membrane structure will relax under the continuous action of load, the prestress in the membrane will change significantly during use. For a specific structure, relaxation will occur under the continuous action of load, so the prestress in the membrane will change significantly during use. For specific structures, the properties of membrane materials can be determined through biaxial tests and applied to prestress design.
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