second, strengthen the environmental design

when designing the glass curtain wall, the forest vagina and green space should be arranged as far as possible next to it, so that the reflected light can be absorbed by the trees, so as to improve and adjust the lighting environment.

in recent years, governments and relevant academic groups have attached great importance to the problem of light pollution, and have successively published a series of technical documents, standards and decrees to control light pollution. China also attaches great importance to the problems of curtain wall construction. The Ministry of Construction promulgated the technical specifications of curtain wall engineering in 1996 and the Interim Provisions on Strengthening the Management of Curtain Wall Engineering in 1997, which provided a legal basis for controlling the quality of curtain wall engineering. According to their actual situation, various localities have also taken some feasible measures, such as the new standards for curtain wall glass installation in Guangzhou.

optimize the curtain wall construction technology.

Although the glass curtain wall building may bring light pollution and other hazards, it does not mean that the glass curtain wall should not be done, but how to do it well. Many glass curtain walls that produce light pollution are caused by unscientific design and construction. At present, the engineering technical specifications of curtain wall have been issued, and there are laws to follow in design and construction. In view of the fact that light pollution is mainly concentrated in some prosperous cities with high-rise buildings and developed economies, these big cities with prominent light pollution contradictions can carry out research work in this area first, and study the technical problems related to the curtain wall.

since the birth of glass curtain wall, the development of high technology has changed the material of curtain wall from single glass to steel plate, aluminum plate, alloy plate, marble plate, enamel sintered plate, etc. Through reasonable design, combining glass curtain wall with steel, aluminum, alloy and other materials can not only make high-rise buildings more beautiful, but also effectively reduce the light pollution caused by reflection of curtain wall, further reduce the self-weight of high-rise buildings and give full play to the advantages of curtain wall building materials.

the influence degree of the reflected light of the glass curtain wall depends on the intensity of the directional reflected light. We can use fully transparent or translucent glass to reduce the intensity of reflected light, but in this way, most of the heat of light will be directly injected into the room, which will inevitably lead to an increase in indoor temperature. Therefore, appropriate structural measures must be adopted to solve this problem.

At present, there are two types of structures that can be adopted:

(1) Double-glazed ventilation structure. This structure has different functions in different seasons. In summer, put down the translucent roller blind and open the exhaust duct and vent, which can remove most of the radiant heat after reflection by the roller blind; In winter, by closing the vent and turning off the exhaust fan, double-layer glass can also play the role of heat preservation and prevent indoor heat loss. The disadvantage of this structure is that the investment cost is large.

(2) infrared heat absorption structure. This structure can use the heat energy in the sun to heat water through the infrared ray transmission characteristics of the dielectric film coating, which can be effectively used in summer and winter.