Analysis of bearing capacity of insulating glass

The main factors affecting the bearing capacity of insulating glass are the strength, stiffness and sealing performance of the hollow layer of insulating glass. ?

Strength and stiffness of insulating glass

The strength of insulating glass refers to the ability of insulating glass to resist external load, and the stiffness refers to the ability of insulating glass to withstand deformation. Obviously, after a given glass material, such as ordinary flat glass or tempered glass, the fracture strength of the original glass plate is determined according to the glass strength design theory. Therefore, in order to improve the bearing capacity of insulating glass, it is necessary to reduce the bending and tensile stress of the glass surface under the same load, which is related to the size of the original glass (the length, width, aspect ratio and thickness of each original glass) and the thickness of the hollow layer. The load directly distributed to each glass under the action of external load determines the bearing capacity of insulating glass.

Because the insulating glass consists of two pieces (or more than two pieces), the periphery of the insulating glass is sealed to form a sealed air layer. When one piece of insulating glass is loaded, the stressed glass deforms and compresses the gas in the insulation layer, and the gas pressure increases, and part of the load is transferred to the other piece of glass. Therefore, in the airtight state, the insulating glass is simultaneously loaded and deformed.

2. Bearing characteristics of insulating glass under the failure state of hollow layer.

In the case of gas sealing in the hollow layer, the gas transfer function can transfer a part of external load to another piece of glass, but when the gas layer leaks, the gas in the hollow layer completely loses its function of transferring load. At this time, the load borne by the hollow glass is completely borne by the directly stressed glass. Obviously, the bearing capacity of insulating glass will be obviously reduced at this time.

3. What are the effects of ambient temperature and pressure difference on the bearing capacity of insulating glass?

Even if it is not affected by external load, due to the difference between the environment in the production area and the environment in the use area of insulating glass, the gas in the hollow layer of insulating glass will expand or contract, which will directly lead to the deformation and additional stress of two pieces of glass, and even cause two pieces of glass to collide with each other and even lead to glass breakage in serious cases.

To sum up, the bearing capacity of insulating glass depends on the strength and stiffness of glass plate and the tightness of hollow layer; Under uniform load, the stress on the inner and outer surfaces of insulating glass is different. The stress on the outer glass is large, but the stress on the back is small, and the smaller the size, the more obvious it is. When the side length of insulating glass is more than 150 times of the thickness, the stress on both sides of the glass tends to be close; After the air leakage of the hollow layer failed, the deformation performance of the hollow glass changed obviously. By applying a concentrated load to the hollow glass and measuring the deflection of the inner and outer sheets or the change of the thickness of the hollow layer, it can be distinguished whether the hollow gas layer is well sealed. The test and field detection results show that the method and detection device can detect the sealing performance of insulating glass conveniently, quickly and reliably.

Jieyang Hong Guang Coated Glass Co., Ltd. was established at 1982, located in the east of the middle section of No.4 Xianqiao Road, Rongcheng District, Jieyang City, with an area of 30,000 square meters and nearly 300 employees.

Our company specializes in producing architectural engineering glass. The products range from flat bending tempered glass series products, insulating glass series products (including LOW-E hollow), laminated glass series products, glazed glass series products and other safe, environmentally friendly and energy-saving products. In particular, LOW-E hollow series products have won the favor of customers in the construction industry with their excellent energy-saving effect, first-class quality and reasonable price.

The company has the most advanced glass deep processing equipment in China, with complete equipment. There are mainly automatic computer glass cutting machine imported from Italy, several double-sided grinding production lines, vertical computer automatic glass drilling machine, flat bending toughened glass production line, strong convection toughened glass production line, automatic insulating glass production line, laminated glass production line, colored glazed glass production line and two large-area coated glass production lines.