56% glass storage safety risk Since its inception, glass curtain wall construction has been favored by many builders for its light weight, short construction period and stylish appearance. Since the appearance of the first domestic glass curtain wall building, the Lianyi Building, in Shanghai in 1984, China has rapidly developed into the world's largest glass curtain wall producing country and a big country in more than 20 years.

The reporter learned from the interview that most of the glass curtain walls are fixed by adhesives. Generally, they begin to age within 10 to 20 years and are most likely to come off. Due to the disrepair of old age, the problem of aging and shedding of glass curtain walls directly affects the personal safety of the citizens. According to a latest census report, 56% of the thousands of glass curtain wall buildings in Shanghai currently have security risks.

The "Technical Specifications for Glass Curtain Wall Engineering" issued by the Ministry of Construction in 1996 clearly stipulated that: after a normal use of a glass curtain wall building, a thorough inspection shall be conducted every 5 years; glass, seals, sealants, and structural silicone sealants shall be inspected. The "Regulations on the Use of Safety Glass for Buildings in Shanghai," which was implemented in 1997, also states clearly that: If the curtain wall safety glass is used for more than eight years, the owner or manager of the building should entrust a qualified technical appraisal agency to carry out the survey.

Glass curtain wall caused by light pollution glass curtain wall is a beautiful and novel method of building wall decoration, is a prominent feature of the era of modern high-rise buildings. It was introduced to China approximately in the 1980s. Large-scale cities with large glass walls in Shenzhen, Guangzhou, Beijing, and Shanghai were everywhere, but the resulting light pollution was unexpected. Light pollution (or noise) of a glass curtain wall means that coated glass or coated glass is used on the curtain wall of a high-rise building. This is caused by the specular reflection of glass when direct sunlight and sky light strike the glass surface. The resulting reflection glare.

Light pollution is the murderer of accidental traffic accidents. A glass-walled building that stands tall is like a huge mirror that is tens of meters wide and nearly 100 meters high. It reflects traffic conditions and traffic lights (even multiple reflections). As reflected light enters a high-speed car, it will cause people's sudden temporary blindness and vision illusion. In the moment, it will cover the driver's field of vision, or make him feel dizzy, seriously endanger the visual function of pedestrians and drivers. Those glass curtain walls built near residential areas will reflect the surrounding buildings. According to optical experts, the reflected light of the mirror building glass is stronger than that of sunlight, and its reflectance is as high as 82% to 90%. The light is almost totally reflected, which greatly exceeds the range that the human body can bear. In the summer, the sunlight is reflected in the living room. The strong glaring light is most likely to damage the original good atmosphere in the room, and it also increases the room temperature by an average of 4°C to 6°C. People who work and live in a bright, white polluted environment for a long time are prone to cause vision loss, dizziness, insomnia, palpitations, loss of appetite, and depression and other symptoms similar to neurasthenia, causing changes in normal physiological and psychological conditions. In the long term, certain diseases will be induced. Therefore, the State Environmental Protection Administration receives many complaints of light pollution all over the country each year, which has caused the attention of the relevant state departments.

First, light pollution is the murderer of accidental traffic accidents. A glass-walled building standing beside a busy road or at a crossroads is like a huge mirror that is tens of meters wide and nearly 100 meters high. It shines in the sunlight and reflects the ground vehicles and traffic lights. Even multiple reflections). Reflected light entering a high-speed car will cause people's sudden temporary blindness and vision illusion, which in the moment will stimulate the driver's vision, or make him feel dizzy, causing serious harm to pedestrians and drivers. According to some drivers in Beijing, when driving from west to east at around 4 pm, the eyes of a strong reflector are not open enough. If you are not alert, this light pollution may cause traffic accidents and people’s lives.

Second, light pollution has brought troubles to the lives of nearby residents, especially the glass curtain walls built near the residential quarters, reflecting the surrounding buildings. According to optical experts, the reflected light of the mirror building glass is stronger than sunlight, and its reflectance is as high as 82% to 90%. The summer sun is reflected in the room and the room temperature is increased by an average of 4 to 6°C. The air-conditioning expenditure increases substantially, affecting people's normal residential use. What is more, people who work and live in a white, light-stained environment for a long time are prone to vision loss, dizziness, insomnia, palpitations, loss of appetite, and depressed moods and similar symptoms of neurasthenia, resulting in normal physiology and Changes in psychology, long-term will induce certain diseases. The National Environmental Protection Agency receives many complaints of light pollution all over the country every year, and attaches great importance to this.

Third, the glass curtain wall is easily contaminated, especially in the northern regions where the atmospheric dust content is high, air pollution is serious, and drought is weak. Glass curtain walls are more susceptible to dust and dirt. This does not increase “light” for the urban landscape. Instead, Lost "face." Because of the inferior material used in some glass curtain walls, the construction quality is not high, and the color is uneven and the ripples are different, resulting in the glass curtain wall being like a magic mirror. In the sun, each glass does not appear to have a uniform light, but it diffuses everywhere. Obviously, such a building is difficult to reminisce in its lucidity and luxury. It can only make people feel bizarre and ridiculous, and the city’s image is greatly reduced.