The advantages of glass curtain wall, why install glass curtain wall?

The advantages and disadvantages of the curtain wall, why choose to install the curtain wall

The advantage of the curtain wall is that it is beautiful, energy-saving and easy to maintain. The glass curtain wall is a new type of wall in the contemporary. The most important feature of the building is that it integrates the architectural aesthetics, architectural functions, building energy conservation and building structure. The buildings are different. The angles show different shades, giving the dynamic beauty with the changes of sunlight, moonlight and light. Magnificent ornate glass-walled buildings are built in major cities on all continents, such as the New York World Trade Center, the Chicago Oil Building, and the Sears Tower. The Bank of China Tower, Beijing Great Wall Hotel and Shanghai Lianyi Building have also been adopted.

The glass curtain wall is a beautiful and novel method of building wall decoration, which is a prominent feature of the era of modernist high-rise buildings.

The glass curtain wall was introduced to China in the 1980s. Shenzhen, Guangzhou, Beijing, Shanghai and other large and medium-sized cities, large-scale buildings with glass curtain walls can be seen everywhere, but the resulting light pollution is unexpected. The light pollution of the glass curtain wall refers to the reflection of glare caused by the specular reflection (ie, specular reflection) of the glass when the direct sunlight and the sky light are irradiated onto the glass surface by using the coated glass or the coated glass on the curtain wall of the high-rise building. Harm of light pollution

Disadvantages of the curtain wall

Light pollution is the murderer of accidental traffic accidents. A glass-walled building standing beside a busy road or at a crossroad is like a huge mirror that is tens of meters wide and nearly 100 meters high. It shines under the sunlight and reflects on ground vehicles and traffic lights. Even multiple reflections). Reflected light enters the car at high speed, which will cause sudden temporary blindness and visual illusion. It will stimulate the driver's sight in an instant, or make him feel dizzy and cause serious harm to pedestrians and drivers. According to some drivers in Beijing, when driving from west to east at around 4 pm, strong reflective thorns can't open their eyes. If not, this kind of light pollution may cause traffic accidents and threaten people's lives. Secondly, light pollution has also brought trouble to the lives of nearby residents, especially those glass walls built around residential areas, which will reflect the surrounding buildings. According to optical experts, the reflected light of mirrored building glass is stronger than that of sunlight, and its reflectivity is as high as 82% to 90%. The summer sun is reflected in the living room, which raises the room temperature by an average of 4 to 6 ° C. The air-conditioning expenses are greatly increased, affecting people's normal residential use. What's 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 make people's normal physiology and Psychological changes will induce certain diseases in the long run. Every year, the National Environmental Protection Agency receives complaints about light pollution throughout the country and attaches great importance to it.

The glass curtain wall is easy to be polluted, especially in the northern part of the atmosphere with more dust, serious air pollution, drought and less rain. The glass curtain wall is more likely to be dusty. This is not the case for the urban landscape. face". Moreover, due to the inferior materials used in some glass curtain walls, the construction quality is not high, the color is uneven, and the ripples are different, resulting in the glass curtain wall being like a mirror. In the sun, each glass does not show a balanced light and shadow, but diffuse everywhere. Obviously, such a building is hard to reminiscent of bright, luxurious, and can only make people feel eccentric and funny, and the city image is greatly reduced.

The layout of urban buildings is inadequate, especially the glass curtain wall is too concentrated, reflecting the lack of management of urban planning. The urban planning management department should control the use of glass curtain walls from a macro perspective, and implement total control and management from the requirements of environment, climate, function and planning. Specifically, when formulating urban main road planning, firstly, the light environment planning of the street should be formulated to limit the wide distribution and over-concentration of the glass curtain wall, especially to avoid the use of glass curtain walls in parallel and opposite buildings. In the open and beautiful areas of the surrounding area, glass curtain walls can be built for commercial, trade, tourism and entertainment buildings, but appropriate building spacing should also be considered, and the total amount of glass curtain wall distribution in this area should be controlled. Most large buildings, including hotels, hotels, restaurants, and entertainment venues, can use partial glass curtain walls. For example, stone walls or aluminum-plastic walls that do not reflect light are used on the bottom of the building. The Shanghai Municipal Construction Committee has the following provisions on the use of glass curtain walls in construction projects: the use of glass curtain wall for buildings shall not exceed 40% of the external wall construction area (including window glass). This provision not only takes into account factors such as urban function, environment and economic benefits, but also reduces light pollution accordingly. For buildings such as houses, apartments, dormitories, hospitals, etc., glass curtain walls should not be used according to their functional requirements and energy conservation policies. As for the office building, due to the large-area glass window, it has been able to meet the requirements of the indoor light environment. It is recommended that the glass curtain wall be no longer used.