Architectural curtain wall surface information such as aluminum veneer, aluminum-plastic board, honeycomb board, etc., should be determined according to the planning service life.
(1) Aluminum-plastic sheets should be selected within ten years because of the uneven quality and excessive filling of the existing aluminum-plastic sheets and the need for on-site processing when considering the construction. As long as the outer surface of the aluminum foil is 0.5mm, many manufacturers use roll coating technology to deal with the outer surface, and the appearance has certain lines, so the planners are in progress. When optimizing the utilization rate of data, we should pay attention not to put the board face in disorder. The influence effect should be strengthened according to the standard requirements. Aluminum square tube or angle aluminium should be used to fix the edge of the board. Neutral silicone structural adhesive should be used when the aluminum-plastic board device is located in or near the fire-proof zone of the building, and fire-proof type should be chosen. When the planning scale of aluminium-plastic sheet is large, it is necessary to calculate the structure of reinforcing ribs to determine the standard and distribution distance of ribs. The ear plates of fixed aluminium-plastic sheet and keel are mostly made of angular aluminium. The length of angular aluminium should not be less than 50 mm. The long holes of angular aluminium should be opened on the side of keel to ensure the thermal expansion and cold contraction of the board surface. Planners also need to be careful not to use aluminium-plastic sheets in vulnerable areas, otherwise they need to do reinforcement treatment on the back.
(2) Aluminum veneer should be selected when the service life is more than ten years. Aluminum veneer has good strength and corrosion resistance. It can guarantee quality in factory processing. Because the aluminium veneer needed in the construction site is processed into products in the factory and can be directly installed, the planners need to indicate the raw materials, thickness, standard of fixed ear plate and processing scale and distribution distance, processing error requirements, standard and distribution distance of strengthening rib when making the processing drawing of aluminium veneer.
It should be noted that the processing scale of the fixed holes near the keel side of the ear plate should consider thermal expansion and contraction. Generally, the round holes are opened on the ear plate. When fixing the screw, the screw should be fixed in the middle of the long round holes as far as possible, so that the device is convenient and flexible. Together, we should pay attention to the dislocation of the ear plate around the plate, otherwise, the device will be fixed in dislocation. When fighting, fluorocarbon spraying should be used for the appearance of aluminium veneer (the performance of fluorocarbon resin is better than other treatment methods), and roll coating method should be avoided as far as possible (roll coating products of some processing plants have directionality, which affects the appearance). Now many buildings choose perforated aluminium veneers to play a rich role. If there is no waterproof isolation layer behind perforated aluminium veneers, it can be used as waterproof layer outside the solid wall, double curtain wall or waterproof isolation layer directly on the back of perforated aluminium veneers, and then plan perforated aluminium veneers. The hole size of aluminum veneer must be larger than the thickness of the plate (process requirements). The hole distance and size should be based on the strength requirements of raw materials (pure aluminum veneer is lower than alloy aluminum veneer). The device of strengthening ribs should be considered together to avoid affecting the external effect. Reasonable planning is to make a model first, and determine the hole size and distance through the long-term and near-term view.
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