建筑热工设计分区指标变化趋势研究

The Study on the Variation of the Value of Zoning Criteria of Thermal Climate Zones

分区指标是制定分区方案的基础。文章根据603个地面气象台站1961年以来的历史气象数据,采用滑动t检验法分析了建筑热工设计分区指标的年代际变化特征及趋势。研究发现,最冷月平均温度、最热月平均温度以及日平均温度大于等于25℃天数指标呈现增加趋势,而日平均温度小于等于5℃天数指标呈减少趋势。滑动t检验分析表明,最冷月平均温度在1972年前后出现气候突变现象,其他三个指标在1997年前后出现气候突变现象。

This paper analyzed the variation of zoning criteria of thermal climate zones in the past of 50 years,and the t-test was employed to explore the trend of zoning criteria.It found that the value of average air temperature in the hottest month,average air temperature in the coldest month and the number of days that average temperature is above 25℃are generally increase in the past of years,while the number of days that average temperature is below 5℃is generally decrease.And the average air temperature in the coldest month has a notable increase around the 1972,and the variation trend of other zoning criteria has significant different around the 1997.