不同铺装材质对局部热环境及人体舒适度的影响

Influence of different pavement materials on local thermal environment and human comfort

选择7种不同铺装材质的场地,实地监测获取场地的地表温度、空气温度与相对湿度数据,揭示不同铺装材质对于局部热环境及人体舒适度的影响,并研究3者之间的关系。结果表明:不同铺装材质的地表温度、空气温度与相对湿度日间均为单峰变化趋势。日间平均地表温度为水面<草地<透水砖<花岗岩<塑胶<混凝土<沥青;日间平均空气温度为水面<草地<透水砖<塑胶<花岗岩<混凝土<沥青。日间平均相对湿度排序与空气温度排序完全相反。日间平均THI(温湿指数,THI值越小,人体舒适度越高)为草地<水面<透水砖<塑胶<花岗岩<混凝土<沥青。透水砖是作为硬质铺装的较佳选择。草地、水面的降温增湿效果与人体舒适度远高于硬质铺装材质。

Seven kinds of sites with different pavement materials were selected.The data of surface temperature,air temperature and relative humidity were obtained by field monitoring.The influence of different pavement materials on local thermal environment and human comfort was revealed,and the relationship among surface temperature,air temperature and relative humidity was explored.The results showed that the surface temperature,air temperature and relative humidity of different pavement materials have a single peak trend in daytime.The average daytime surface temperature was water surface<grassland<permeable brick<rough granite<plastic<cement<asphalt;the average daytime air temperature was water surface<grassland<permeable brick<plastic<rough granite<cement<asphalt.The order of average relative humidity during the day was completely opposite to that of air temperature.During the daytime,the average THI(temperature humidity index,the smaller THI value,the higher human comfort)was grassland<water surface<permeable brick<plastic<rough granite<cement<asphalt.Permeable brick is the better choice for hard pavement.The cooling and humidifying effect and human comfort of grass and water surface are much higher than that of hard pavement materials.