Research On Office Building Form Design Strategy In Severe Cold Region Based On Daylight Comfort

Continuous improvement of technology makes the use of daylighting easier in inside of buildings.Meanwhile,the use of daylighting in office buildings is very common.In virtue of harsh climate of severe cold area and long winter sunshine time,good daylighting is of great significance to the office building.While improper use of daylight also brings problems like indoor glare and over illumination,which affects body comfort in office buildings.Therefore,how to effectively and reasonably use daylight to create a comfortable and healthy daylighting environment,and then to improve the indoor daylighting environmental quality of office buildings has become a concern in this paper.In view of the urgent requirements of office building and rapid development of China's green city construction,it is of great theoretical and practical significance to study the shape design of office buildings under the consideration of light comfort.Based on the above background,firstly,the paper provided theoretical analysis from four aspects of the concept of daylight comfort,evaluation index,influencing factors,simulation tools and sky model.Afterward,the paper used sample survey method to collect office buildings form information in severe cold regions,and summarized the common office buildings form threshold at the begining.The office building daylight comfortable parametric simulation workflow and developed the daylight comfortable parametric simulation model in severe cold regions have been proposed for improving the precision efficiency of daylight comfort simulation performance.Using comparison method between simulation and actual measurement verified the effictivness of prediction accuracy of parameterized simulation workflow and model,respectively under the situation of daylighting and glare.In the end,by using control variables to experiment,the parametric simulation process model of light comfort performance is applied to calculate the value of Uniformity,Discomfort Glare Probability,Discomfort Factor,Daylight Autonomy and Useful Daylight Illuminance under different conditions of Building Height,Window-Wall Ratio,Window Height and Width-Height Ratio,so as to put forward office building form design strategy in cold regions.The study of the relationship between the design parameters and the daylight comfort performance of office buildings in severe cold regions can quickly judge the effect of daylight comfort in the stage of architectural design,and correct the design parameters in time,so as to get the best design result.