文章摘要
基于建筑三维形态特征的老城区风环境评估方法与应用——以合肥市老城区为例
Assessment Method and Application of Wind Environment in the Old City Area Based on Building Three-dimensional Morphology Characteristics——A Case Study in the Old City of Hefei
投稿时间:2024-03-11  修订日期:2024-04-11
DOI:
中文关键词: 城市风环境  建筑三维形态  地理信息系统  通风阻力
英文关键词: Urban wind environment  building three-dimensional morphology  geographic information system  ventilation resistance
基金项目:安徽省自然科学基金:适应气候变化的城市空间形态优化策略研究(2008085ME160)
作者单位邮编
顾康康* 安徽建筑大学 建筑与规划学院
安徽省国土空间规划与生态研究院 
230601
聂祖坤 安徽建筑大学 建筑与规划学院 
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中文摘要:
      老城区内部建筑布局混乱、开敞空间缺失等原因造成通风环境的恶化,加剧城市热岛效应与空气污染。以往只考虑单一建筑形式的通风分析方法,缺少对建筑三维形态特征的考虑。本文构建基于建筑三维形态特征参数的风环境评估方法,以合肥市老城区为研究对象。研究结果表明:(1)合肥市老城区内风环境质量较差,环城河水域及周边开敞空间风环境质量较好,北部、南部及环城河内部区域普遍较差;(2)针对评价结果将老城区划分为风环境稳定区、保持区与改善区,稳定区与保持区以保持现状为主,针对改善区提出潜在廊道挖掘、开敞空间布置、建筑层高朝向控制以及违章建筑拆除等空间形态与功能布局层面优化策略;(3)选取环城河内部区域进行空间优化模拟验证,PHOENICS模拟云图显示研究区平均风速从2.78m/s上升至2.94m/s,证明了优化措施能够有效的改善老城区通风环境。VRI指数引入了建筑物高度、立面、体量对空气流动的影响,从而提供了比单一形态参数更精准的风环境评估。
英文摘要:
      The deterioration of the ventilation environment in the old urban area of Hefei is caused by the disorderly layout of internal buildings and the lack of open spaces, exacerbating the urban heat island effect and air pollution. Previously, only the ventilation analysis method of a single building form was considered, lacking consideration of the three-dimensional morphological characteristics of buildings. In this study, a wind environment assessment method based on the three-dimensional morphological characteristics of buildings is constructed, taking the old urban area of Hefei as the research object. The research results indicate that: (1) The wind environment quality in the old urban area of Hefei is relatively poor, with better wind environment quality in the water area around the city moat and its surroundings, while the northern, southern, and internal areas of the city moat generally have poor wind environment quality; (2) Based on the evaluation results, the old urban area is divided into wind environment stable zones, preservation zones, and improvement zones. The stable and preservation zones mainly focus on maintaining the current situation, while potential corridor excavation, arrangement of open spaces, control of building height orientation, and demolition of unauthorized buildings are proposed as spatial morphological and functional layout optimization strategies for the improvement zone; (3) The internal area of the city moat is selected for spatial optimization simulation verification. The PHOENICS simulation cloud map shows that the average wind speed in the study area increased from 2.78m/s to 2.94m/s, proving that the optimization measures can effectively improve the ventilation environment in the old urban area. The VRI index introduces the influence of building height, facade, and volume on air flow, providing a more precise wind environment assessment than single morphological parameters.
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