Maintenance of steel structure canopy
Canopy is a kind of building assembly set at the entrance of the building or above the top balcony to prevent rain and falling objects from hitting. Generally, two types are used: toughening and gluing. Tempered glass is made of ordinary glass after uniform heating, and when it is close to the softening point, it is cooled evenly at the corresponding cooling rate according to different thickness. The strong permanent internal stress is generated in the glass, and the tensile stress of the inner layer and the compressive stress of the outer layer are in a stable stress balance state. The original physical properties of glass are changed, the original use properties of glass are overcome, and the use of laminated glass is increased. The laminated glass has good safety. Due to the bonding effect of plastic lining in the middle, when the glass is broken, the fragments will not fly away, and only radial cracks will be generated, which is safe and harmless. Therefore, it is widely used in automobile windscreens. At the same time, the impact strength of laminated glass is much higher than that of ordinary glass, and it is not easy to be broken when impacted. In addition to the above properties, laminated glass has a unique anti-theft effect. It is relatively safe because it is not easy to be broken into.