Glass curtain wall refers to the building's external protective structure or decorative structure, which is composed of supporting structure system and glass, and has certain displacement ability relative to the main structure, and does not share the role of the main structure. Walls with single and double glazing. Reflective insulating glass is 6 mm thick and the weight of the wall is about 40 kg/㎡, which has the advantages of lightness, beauty, less pollution and energy saving. The inner side of the outer glass of the curtain wall is coated with colored metal coating. From the appearance, the whole external wall is like a mirror, reflecting the scenery of the sky and the surrounding environment. When the light changes, the image is rich in color and varied. Under the reflection of light, the room is not exposed to strong light and the vision is soft. China 1983 was first adopted in the Great Wall Hotel project. How is the glass curtain wall made? Glass curtain wall refers to the mirror glass used as the decoration of building exterior wall. It is made of transparent glass with trace amounts of iron, nickel, cobalt and selenium. To float glass and tempering. It can absorb infrared rays, reduce the solar radiation entering the room and reduce the indoor temperature. It can reflect light like a mirror and transmit light like glass.

The glass curtain wall of modern high-rise buildings also uses insulating glass, which is composed of mirror glass and ordinary glass, and the interlayer is filled with dry air. There are two layers and three layers of insulating glass, and the two layers of insulating glass are sealed by two layers of glass and a frame to form a sandwich space; Triple glazing is two sandwich spaces composed of triple glazing. Insulating glass has the advantages of sound insulation, heat insulation, frost resistance, moisture resistance and strong wind pressure resistance. According to the measurement, when the outdoor temperature is-10℃, the temperature in front of single-layer glass window is -2℃, while the indoor temperature with three-layer insulating glass is 13℃. In summer, double-layer insulating glass can block 90% of solar radiation heat. Sunlight can still pass through the glass curtain wall, but most of it won't feel hot in the sun. The room with hollow glass curtain wall can be warm in winter and cool in summer, which greatly improves the living environment. Classification and composition 1. Open-frame glass curtain wall Open-frame glass curtain wall refers to the glass curtain wall with metal frame members exposed on the external surface. It takes the aluminum alloy profile with special section as the frame, and the glass panel is completely embedded in the groove of the profile. It is characterized in that the aluminum alloy profile itself has dual functions of skeleton structure and glass fixing.

2. Hidden frame glass curtain wall

The metal frame of the hidden frame glass curtain wall is hidden on the back of the glass, and the metal frame can't be seen outdoors. Hidden frame glass curtain wall can be divided into full hidden frame glass curtain wall and semi-hidden frame glass curtain wall, which can be horizontal, flat and vertical, or criss-crossed. The structural characteristics of the concealed frame glass curtain wall are: the glass is outside the aluminum frame, and the glass and the aluminum frame are bonded with silicone structural sealant. The load of curtain wall is mainly borne by sealant.

3. Point-supported glass curtain wall

Point-supported glass curtain wall is a new type of support in recent years. But once it appeared, it developed rapidly in the city.