[China Glass Net] The composition of the glass curtain wall
Front class, bright frame glass curtain wall. The erected frame and the horizontal frame of the aluminum alloy form a frame. The glass of the Suzhou Sunshine Room is embedded in the aluminum frame, and becomes a curtain wall member with aluminum frame on the four sides. The curtain wall member is embedded on the beam to form the exposed column pillar, and the aluminum frame is clearly defined. The curtain wall is called a bright frame glass curtain wall. The second type, the hidden frame glass curtain wall; the hidden frame glass curtain wall is to bond the glass with silicone structural sealant (referred to as structural adhesive) on the aluminum frame, in most cases, no metal connection is added. Therefore, the aluminum frame is completely concealed behind the glass to form a large-area all-glass mirror. In the third category, the curtain wall consisting of glass panels and glass ribs is called an all-glass curtain wall. The fourth category, point-supported glass curtain wall. The glass panel is pre-punched, connected by stainless steel claws and trusses, and the panel is fixed with stainless steel claws. The curtain wall thus formed is called a branched glass curtain wall. The focus of the glass curtain wall is the exposed frame and the hidden frame glass curtain wall.
Principle of glass curtain wall
The load of the entire glass curtain wall is subjected to the force process: the weight of the glass panel is transmitted to the mullion through the horizontal frame, the mullion is subjected to all the loads, and then all the loads are transmitted to the civil structure, so the mullion is the main bearing of the curtain wall. member. The curtain wall is made into a tension member by special design, so that the cross section of the aluminum frame can be greatly reduced, which reduces the construction cost. The beam column of the curtain wall is a simple support beam of the structure, which is a structure in which the simple support and the sliding support rotate in a vertical direction. The sun room of the Suzhou is fixed above and slides underneath. This is the principle of the force of the keel member of the curtain wall, that is, the simple support The sliding connection of the beam upside down is a suspended component, which is a tensioned member, which is only allowed to move up and down, and is not allowed to sway back and forth (see Figure 1).
In Fig. 1, the upper and lower two columns are connected by a core sleeve, and the column and the embedded member are connected by a fastener, and the upper end of the column is fixed, the lower end is not fixed, and the length of the core sleeve is 250 mm. Simply supported beam upside down is the clever design of the curtain wall. How many layers are in the building? The mullion of the curtain wall has one unit per layer, that is, how many units, each unit, the upper part is hinged, the lower part is sliding connection, upper and lower There should be a gap of 15 mm or more between the columns. In order to ensure the safety of the structure, the sliding support is fixed in perforation, and in order to allow the vertical displacement of the mullion, the hole is elliptical.
Several key points of the exposed glass curtain wall.
(1) There must be a gap between the horizontal frame and the mullion, because if the horizontal frame and the vertical frame are in close contact, friction noise will be generated, so a flexible gasket should be added between the aluminum alloy connector and the mullion to prevent noise. And friction. (2) When the connecting piece is steel plate and the mullion is aluminum alloy, these are two different metal connections, and anti-corrosion insulating flexible gaskets should be added between them (Fig. 2, anti-corrosion insulating flexible gasket), here the anti-corrosion solution Bimetallic corrosion, flexible to solve frictional noise. (3) The stainless steel used in the curtain wall must be austenitic stainless steel. If the curtain wall is entirely made of stainless steel, the anti-corrosion insulation gasket can be ignored, but the flexible gasket should be considered in order to prevent noise. (4) There is no direct contact between the glass and the frame, so a spacer having a length of not less than 100 mm should be placed under the glass. If the cushion is too short in Suzhou Sunshine Room, it will easily cause the block to deform, resulting in crushing to glass breakage.
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