城市街区通风效能评估及空间优化研究

顾康康; 赵晓红; 崔雨乐; 董冬; 张馨木

doi:10.3724/j.gyjzG23063009

城市街区通风效能评估及空间优化研究

doi: 10.3724/j.gyjzG23063009

1. 安徽建筑大学建筑与规划学院, 合肥 230022;
2. 安徽省国土空间规划与生态研究院, 合肥 230022

基金项目:

安徽省自然科学基金项目(2008085ME160)

国家级大学生创新创业项目(202210878016)。

详细信息

作者简介:
顾康康,博士,教授,主要从事城乡生态与环境规划研究。

通讯作者:
赵晓红,主要从事城乡风热环境研究,zxh181623@163.com。

计量
- 文章访问数: 77
- HTML全文浏览量: 13
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2023-06-30
- 网络出版日期: 2024-11-06

Research on Evaluation of Ventilation Efficiency and Spatial Optimization in Urban Neighborhoods

1. School of Architecture and Planning, Anhui University of Architecture, Hefei 230022, China;
2. Anhui Institute of Territorial Spatial Planning and Ecology, Hefei 230022, China

摘要

摘要: 城市通风廊道是改善城市微气候、降低城市热岛效应、缓解空气污染的有效途径之一。通过构建城市街区通风效能评估理论框架,定量评估合肥市主城区57个街区的通风效能,其中通风效能最差的为双岗街道,进而提出基于老旧街区的风环境空间优化策略。结果表明:1)合肥市通风效能形成以老城区(二环路内)、新城区(滨湖新区)为主的"一主一次"双中心分布结构,通风效能由核心向外先小幅度降低后升高,平均值为3.27。2)运用计算流体动力学(CFD)数值模拟,分析冬、夏季多种空间布局方案,通过构建顺应主导风向的潜在通风廊道、更改街区阻碍点的建筑群高度及建筑密度等空间优化策略,可以改善街区的风环境质量、促进污染物的扩散、提高居民的舒适度,为老旧街区生态化更新改造提供理论支持。
- 城市形态 /
- 街区通风优化 /
- CFD模拟 /
- 3D模型 /
- 建成环境 /
- 老旧街区
Abstract: Urban ventilation corridor is one of the effective ways to improve urban microclimate, reduce urban heat island effect and alleviate air pollution. By constructing a theoretical framework for evaluating the ventilation performance of urban neighborhoods and quantitatively assessing the ventilation performance of 57 neighborhoods in the main urban area of Hefei City, the worst ventilation performance was found in Shuanggang Street, and then a spatial optimization strategy for the wind environment based on the old neighborhoods was proposed. The results showed that: 1)Hefei ventilation efficiency formed a "one main and one time" dual-center distribution structure mainly in the old city (within the Second Ring Road) and the new city (Binhu New District), and the ventilation efficiency decreased slightly and then increased from the core outward, with an average value of 3.27. 2)CFD numerical simulation was used to analyze a variety of spatial layout schemes in winter and summer, and it was concluded that it was necessary to build a new ventilation system that conformed to the dominant wind direction. The spatial optimization strategies, such as constructing potential ventilation corridors that follow the dominant wind direction and changing the height and density of buildings at the block obstruction points, can improve the quality of the wind environment of the block, promote the diffusion of pollutants, and improve the comfort of the residents, thus providing theoretical support for the ecological renewal and reconstruction of the old block.
- urban form /
- neighborhood ventilation optimization /
- CFD simulation /
- 3D model /
- built environment /
- older neighborhoods

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