城市街道夏季动态热舒适研究——以上海黄金城道步行街为例
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西华大学建筑与土木工程学院

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TU986

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Study of Dynamic Thermal Comfort on Urban Street in Summer——A Case Study of Golden City Road Pedestrian Street in Shanghai
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College of Architecture and Civil Engineering,Xihua University

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    摘要:

    本文以上海黄金城道步行街为研究对象,通过对街道中典型的风景园林空间按顶面遮蔽程度分为3种类型下的12个测点进行夏季小气候定点实测,同时沿步行路线对各测点空间进行热舒适问卷调查及热舒适评价指标计算,探讨上海城市街道热舒适的动态性。结果显示:①热要素是影响生理等效温度(physiologically equivalent temperature,PET)评价结果的主要小气候要素,根据问卷结果,影响夏季街道热舒适的主要小气候要素是空气温度和相对湿度;②小尺度风景园林空间变化可以引起小气候显著变化;③热感觉的空间变化主要受小气候变化影响,步行路线中的短期(3~5分钟)热经历体验可以影响热感觉;④即使热感觉高于热中性,通过随空间变化与之前的热感觉进行对比产生相对的、动态热舒适;⑤PET热舒适范围为21.1~41.1℃。验证了动态热舒适以实地热舒适投票结果为表征,受小气候空间变化、生心适应、感知控制影响的舒适机制。研究结果为指导城市健康设计提供了基于动态热舒适的经验与参考。

    Abstract:

    Taking Shanghai Golden City Road Pedestrian Street as the research object, three typical landscape spaces had been divided according to the degree of shade. In order to understand the dynamic nature of thermal comfort at urban street in Shanghai. The microclimate fixed-point measurement were carried out for the 12 measurement points under these space types in summer. At the same time, thermal comfort questionnaire and calculation of thermal comfort evaluation indicator for each measuring point space were carried out along the walking route. It is indicated that: ① Thermal factors are the main microclimate factors affecting the Physiological Equivalent Temperature (physiologically equivalent temperature, PET) evaluation results .According to the thermal comfort questionnaire, the main microclimate factors affecting street thermal comfort are air temperature and relative humidity. ② Microclimate significant changes according to the changes of landscape space in micro-scale. ③ Spatial variation of subjective thermal sensation influenced by the variation of microclimate. Short-term thermal experience (3~5mins) can influence the thermal sensation along the walking route. ④ Even though the overall thermal sensation is higher than neutral, a relative, dynamic thermal comfort can obtained through involuntary comparison with the previous thermal sensation along the spatial variation. ⑤ The thermal comfort temperature range calculated by PET was 21.1~41.1℃.It is verified that the dynamic thermal comfort is characterized by the results of on-site thermal comfort voting, which is affected by the microclimate space changes, physiological and psychological adaptation, and perceptual control. This research will provide experience and reference based on dynamic thermal comfort for guiding urban health design.

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彭旭路. 城市街道夏季动态热舒适研究——以上海黄金城道步行街为例[J]. 科学技术与工程, , ():

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  • 收稿日期:2021-12-24
  • 最后修改日期:2022-04-18
  • 录用日期:2022-04-30
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