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目前,有关春季城市广场热环境以及热舒适性的研究并不多。在此项研究中,首先对武汉市两个典型的广场进行实地测试,分析各种类型的城市广场设计元素对城市广场热环境的影响;然后进行人体热感觉和热舒适性的问卷调查,通过统计学手段分析人们对城市广场热环境的主观反应与评价。研究结果显示春季热环境受太阳辐射的影响最大,人们感到舒适的城市广场中性温度约为21.1℃,中性标准有效温度约为23.5℃。此外根据研究结果提出了选择合适下垫面,加强种植与绿化、合理搭配布局、改善有效遮阳、加强地下空间的利用等设计策略,以营造良好的城市广场热环境。
At present, there are not many studies on the thermal environment and thermal comfort of spring city square. In this study, we first conducted field tests on two typical squares in Wuhan to analyze the influence of various types of urban square design elements on the thermal environment of the urban plaza. Then we conducted a questionnaire survey on thermal sensation and thermal comfort of the human body, Statistical means to analyze people’s subjective reaction and evaluation to the hot environment of city square. The results show that the thermal environment in spring is most affected by solar radiation, the comfortable central plaza temperature is about 21.1 ℃, and the neutral standard effective temperature is about 23.5 ℃. In addition, according to the research results, some design strategies such as selecting suitable underlying surface, strengthening planting and afforestation, rational collocation layout, improving effective sunshading and strengthening the utilization of underground space are put forward so as to create a good hot environment of city plaza.