Suzhou curtain wall glass bursts the solution of falling

[China Glass Network] The number of glass curtain walls for four or five thousand buildings is the first in Shanghai. The first scene from Shanghai - the Bund Yan'an East Road Lianyi Building curtain wall project has been completed, and a large number of buildings in this city have begun to use glass curtain walls.

Shanghai is the city with the largest number of glass curtain wall buildings in China, and there are currently 4,000 to 5,000 such buildings. Contrary to the high-profile appearance of glass curtain walls, the relevant technical standards have been “late” for at least 10 years. After 1996, these standards were introduced.

According to regulations, the design period of glass curtain wall is generally 25 years. Glass curtain walls using silicone structural adhesives are routinely inspected after 10 years of construction. At present, Shanghai has 20% of the glass curtain wall of the building for more than 15 years. Since these curtain walls were "born" earlier than the relevant standards, their design, acceptance, etc. are not standardized. They enter the "frequent fall period" and become "high-altitude bombing". The possibility is getting bigger and bigger. “After the curtain wall burst, the glass particles are scattered from the sky into a 'glass rain', and the lethality is comparable.” An architect said that these particles can be worn on the ceiling of a car parked downstairs, which shows its power. Some people even call the glass curtain wall "the air killer in the city."

problem

Overhaul and maintenance costs are high and even exceed construction costs. “Generally, the curtain wall needs regular maintenance and maintenance. The relevant inspection department must first conduct the survey and then issue a report. If problems are found, repair and maintenance is a small expense.” Some high-altitude parts, involving high-altitude operations, manpower, material costs, etc., may reach several hundred yuan per square meter. If you want to replace the glass, the cost is more than a thousand dollars, even more expensive than the original construction. A large-scale glass curtain wall business building will be repaired at a large cost of at least several hundred thousand yuan. “Because of the lack of funds for property maintenance, inspection and maintenance can be in place, it is difficult to say.”

It is recommended to attach a layer of building (explosion-proof) film to the curtain wall glass. In August 2007, the Shanghai Municipal Government paid more attention to the use of foil glass. The Shanghai Construction Committee, Science and Technology Commission, Building Materials Office and other units, in 1997, weaved the "energy-saving safety glass film." "Special research was carried out and a series of tests were conducted.

The research results show that the film glass can block more than 95% of the sun's ultraviolet rays, and it can also enhance the toughness and impact strength of the glass and reduce the damage caused by the glass. On September 11, 2007, Oriental Morning Post: Sun Jianping, deputy director of the Shanghai Construction and Transportation Committee, said that attaching thermal insulation film to the original glass and reducing energy consumption has become an important part of the renovation of Shanghai glass curtain wall.

In 2010, the Shanghai Municipal Construction Committee revised the non-safety glass curtain wall building: 1) Under normal circumstances, it should be replaced with safety glass according to the Ministry of Construction and Shanghai regulations;

2) If the safety glass is replaced unconditionally, the glass surface can be coated.

Architectural film overview 1, the advantages of architectural film

Safety and explosion-proof function; increase glass strength, reduce personal injury and protect property, construct invisible protective net; reduce the harm caused by earthquake; filter glare, reduce glare to protect skin and vision; energy saving and environmental protection, can block 50%-90% The heat, reduce the high electricity cost caused by air-conditioning heating; block the ultraviolet light 99%, protect the indoor items from fading and aging; one-way perspective, protect privacy to make the living space comfortable, quiet and comfortable; improve the building appearance and beautify the indoor living environment Easy to install, easy to clean, abrasion resistant, no special maintenance; economical and practical, no fading, no bubbles, long use time.

2, the safety advantage of the construction film

(1) Avoid the smashing of the glass curtain wall and the probability of falling down the building. The glass after the building film is crushed under a strong enough impact. The glass fragments can adhere to the film, and will not be scattered around, but become a hole. The edges of the holes do not have serrations when they are not filmed; therefore, it is possible to prevent the glass from smashing and damaging the building. In addition, in the process of film construction, in addition to the adhesive glue on the film, it is also possible to adhere the frame to the film with a special glue, thereby delaying the time when the glass is broken and falling, thereby reducing casualties. Of course, you need to be reminded that you must choose a quality and safe building film.

(2) Reducing the light pollution of the glass curtain wall The summer sunlight is reflected into the living room, and the room temperature is increased by 4~6 °C on average. The air-conditioning expenses are greatly increased, which affects people's normal residential use. Even more people who work and live in a white, bright and polluted environment for a long time are prone to vision loss, dizziness, insomnia, palpitations, loss of appetite and depression, and other symptoms of neurasthenia, which cause normal physiological and psychological development. Changes, long-term will induce certain diseases. After the film is applied, the problem of rising room temperature can be solved and the light transmittance can be reduced.

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