Simulation Study On Lighting Environment Of Atrias Of Commercial Buildings In Changchun Area

In commercial buildings,the atrium is an important shared space.It undertakes a variety of activities such as exchange,leisure,and entertainment.It has important social functions,economic functions,and environmental functions.The atrium with a light roof can not only introduce natural light into commercial buildings,improve the overall light environment quality of shopping malls,but also make people feel better and improve the overall vibrancy of shopping malls.This article mainly discusses the forms of atriums and lighting roofs suitable for commercial buildings in the Changchun area from the aspects of the plane form,the lighting roof pattern,the glass material,and the shading methods.Firstly,through a large number of literature readings and data compilation,we have learned about the research status and achievements of the light environment of atriums at home and abroad;Secondly,through investigation,the characteristics of the commercial building atrium in Changchun area were understood,and actual measurement and computer simulation were carried out.The actually measured illuminance value and the illuminance value simulated by Desktop Radiance software were compared and analyzed,and the summary was made;Then,based on the light climate in Changchun,different scale models were established to simulate the light conditions of the atrium under different conditions,so as to obtain the light characteristics of some atriums in the Changchun area: In the flat form(circular,polygonal,rectangular,streamlined),the lighting effect of the atrium with the increase of the aspect ratio,the lighting quality is decreasing,among which the circular atrium has the b est lighting effect,the square is the second,and the streamlined atrium lighting effect relatively low;Light roof(flat roof,rectangular roof,vaulted roof,double slop roof,single slop roof),flat roof lighting effect is lower than rectangular roof a nd cylindrical roof;sloping roof,when the slope is 18 ° ~ 30 ° The lower the slope,the better the lighting effect;The glass should be made of a material with a large visible light transmission,and the interior shading should be used.The sunshade mate rial should have a plain light-colored shade cloth with a light projection rate of 26% and an aperture ratio of 10%;inally,we summarized some characteristics of the lighting characteristics of the atrium,and put forward some strategies to improve the space environment of the atrium in commercial buildings in the Changchun area.It is hoped that the basic work done in the paper can provide some useful reference value for the design of the light environment of the building atrium in the future and further study in the later period.