Subjective Evaluation Research On Timber Coverage Of Building Surface In Modern Timber Building

Wood is the product of nature,with gentle luster,the feeling of warmth and warm touch.Wooden buildings easily evoke the nature,and make people relaxed and happy,ease the nervous depressive mood in the heart.As one of the best choice of green building and ecological building,wooden buildings have the development history of thousands of years of in China.However,the modern wooden structure is got started in the past 30 years.Nowadays,the proportion of wooden buildings is less than 1%,by the year 2020 in the period of "Plan in 13 th Five-Year",striving to make the ratio of wooden architecture reached 5%.China is a country with lacking of construction timber.The lack of wood resources and conservative design concept are the primary bottleneck of modern timber building for rapid development in China.How to make the limited wood resources get more extensive and reasonable use is an urgent need to solve the problem.This paper explores the relationship between audiences acceptability of modern timber building and timber coverage rate of outer surface.From viewpoint of subjective evaluation of audiences,rational value domain of timber coverage rate of outer surface for the building is found out.With the help of the research method of predecessors taking images as analysis units to conduct the psychological description,survey,personal interview and physiological indexes monitoring test,this paper comprehensively uses questionnaire survey,eye-tracking study and free interview to conduct qualitative and quantitative exploration.Based on various perspectives of confirmation,it determines principal factors and evaluation criteria affecting assessment preferences by Focus Group Method firstly;afterwards,it makes a induction of analyzing units by orthogonal design experiment method;and then three evaluation methods are adopted to comprehensively test subjective preferences by questionnaire survey,eye-tracking study and free interview.The data outputs conduct correlation analysis and variance analysis affected by different factors in SPSS software.The correlation analysis shows that there exists significant interactive relationship between audiences acceptability of timber building and timber coverage rate of outer surface,audiences acceptability is the highest when timber coverage rate is between 55% and 70%,it is positively correlated in case of less than this range,but negatively correlated in case of greater than this range.The variance analysis shows that there is significant difference between audiences acceptability affected by single factor and multiple factors while timber coverage rate is 45% and 70%,however,the overall variation trend is consistent.This paper therefore aims to explore the rational ranges of outer surface timber coverage rate for modern timber building by taking psychological perception of audiences as the breakthrough point so as to make use of timber resource more efficiently.More specifically,the research question is to find out the relationship between subjective assessment of audiences and surface timber coverage rate of the timber building,and to further excavate the influence of tie-in material and display texture of timber on assessment preferences of timber coverage rate.While promoting the development of modern Timber construction in China.