대한건축학회논문집 (Journal of the Architectural Institute of Korea)

  • 제36권12호
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  • Pages.187-198
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  • 2020
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  • 2733-6239(pISSN)
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  • 2733-6247(eISSN)
대한건축학회 (Architectural Institute of Korea)
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도시 주거공간 내 가로협곡의 기하학적 특성이 열쾌적성에 미치는 영향 - 의사결정나무 분석 방법으로 -

The Impact of the Geometry of Urban Residential Street Canyons on Thermal Comfort - Based on a Decision Tree Analysis Method -

  • 투고 : 2020.10.05
  • 심사 : 2020.12.07
  • 발행 : 2020.12.30
⟨ 이전 논문 다음 논문 ⟩

초록

This study analyzed the impact of the geometry of Urban Street Canyons (USCs) on citizens' thermal comfort in order to manage urban spaces in response to the deterioration of the urban thermal environment due to climate change. Aspect ratio, formed by the height of buildings and width of streets, and street orientation were selected as the geometric characteristics of USCs. PET at 1.5m height calculated by ENVI-met, the microclimate simulation software, was chosen to determine the parameter of thermal comfort. Using the decision tree analysis, USCs of the case study area were classified into 10 nodes according to the geometry and thermal perception of each USCs. In addition, PET by each node derived by segmentation was analyzed over time. As a result, thermal comfort was found to differ according to the shadow generation rate of the streets - the higher the shadow generation rate, the more comfortable the thermal environment. More specifically, first, the higher the aspect ratio is, the more thermal comfort is found. Second, the more parallel the street orientation is and according to the direction of sunlight, the less thermal comfort is determined. Third, the impact of street orientation is indicated clearly when the aspect ratio is between 1.471 to 2.209. These results can be applied to establishing urban form, framed by building and street or for redeveloping street spaces in consideration to the thermal environment.

키워드

과제정보

본 연구는 국토교통부 도시건축연구개발사업의 연구비지원 (20AUDP-B102406-06)에 의해 수행되었습니다.

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