[China Glass Network] On August 26, the curtain wall glass of a hotel in Jinan suddenly fell, and the glass fragments caused by the splash caused accidental injuries. On August 29, a glass of Xining Huade Building fell on the sidewalk... The curtain wall crash incident made some people a little worried. How to solve the hidden dangers of the existing glass curtain wall, how to avoid such problems in the future? Recently, the reporter asked Huang Wei, director of the Aluminum Door and Window Curtain Wall Committee of the China Building Metal Structure Association. One of our mainly metal gifts and crafts,including souvenir metal coin, metal coin for collect, Commemorative Coin, 3D metal coin, Old metal coin, antique metal coin, Gold Commemorative coin, Cheap metal coin, Premium metal coin ,Challenge metal coin, police coin, army coin or military coin. Commemorative Coins,Custom Coin,Gold Coin,Metal Coin,Commemorative Coin Shenzhen MingFengXing Art & Craft Products CO., LTD. , https://www.goodkeyring.com
Huang Wei said that in recent years, glass curtain wall fall incidents in various parts of the country have collapsed due to quality problems such as structural adhesives and hardware, and there are also cases in which ordinary glass glue is used to replace silicone structural sealant during construction. The main reason is that glass blew up, accounting for up to 95%.
According to the “Regulations on the Administration of Building Safety Glass†issued by the four ministries and commissions such as the National Development and Reform Commission in 2003, tempered glass must be used for the glass curtain wall. In general, the impact strength of tempered glass is 5-10 times that of ordinary glass. Even if it is broken, it will be scattered into small fragments without sharp angles, which can greatly reduce the damage to the human body.
However, tempered glass is not foolproof, and there are also 2-3 self-explosion rates. According to Huang Wei, in the early years, most of the domestic curtain wall glass was imported, and the raw materials of the products were well controlled, and the phenomenon of self-explosion was rare. However, in recent years, China's construction industry has developed rapidly. Many projects have tight schedules and heavy tasks. Coupled with fierce competition in the industry, the normal glass production process of some enterprises has been artificially compressed, causing some quality problems.
In this regard, Huang Wei suggested that the super high-rise buildings should use higher-grade original glass or ultra-white glass. “Like Guangzhou West Tower, Shanghai Center Building and other super high-rise glass curtain wall projects, the glass self-explosion rate is very low, and the use is This kind of glass."
At present, China has narrowed the scope of use of glass curtain walls in terms of policies. In 2015, the Ministry of Housing and Urban-Rural Development and the State Administration of Work Safety issued a document requesting that new residential buildings, office buildings for government and government agencies, emergency clinics and ward buildings for hospitals, primary and secondary schools, nurseries, kindergartens, and elderly buildings should not be used on the second floor or above. Glass curtain wall.
The safety hazard of the glass curtain wall deserves attention. Huang Wei suggested that, on the one hand, glass production enterprises, construction units, owners and regulatory authorities should work together to ensure good quality, and should not rush to progress and pressure; on the other hand, it is necessary to conduct comprehensive inspections of curtain wall projects. Detection is not a minor project, and the consent of the other party is required. The owners of some high-rise buildings are worried about the impact on business and daily life, and often refuse to detect. Therefore, it is necessary to improve the on-site inspection technology level of the curtain wall, reduce the impact on the daily work of the owners, and also strengthen the whole society's emphasis on the safety of the curtain wall, improve the safety awareness of the owners and tenants, and enable them to actively cooperate with the inspection work.
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July 19, 2023