基于空气污染物控制的历史文化街区外部空间形态优化策略研究——以武汉市为例

Study on Optimization Strategy of Exterior Space of Historical and Cultural Block Based on Air Pollution Control:Case of Wuhan Historical Blocks

位于城市中心地区的历史文化街区易受到交通污染的影响,对其空气污染状况的研究可为历史文化街区更新改造提供环境品质提升方面的对策。选取武汉市16个历史文化街区为研究对象,利用数值模拟的方法厘清街区空间形态与空气污染物扩散分布的关系。研究结果表明,影响历史文化街区空气污染物扩散分布的重要因素是街区的街道空间形态与建筑布局。继而基于污染物控制,针对性提出外部空间形态优化策略。

The historical blocks located in the city center are susceptible to the influence of traffic pollution,and it is an important measure to study their air pollution status to guide their renovation and transformation strategies.In this article,we select 16 historical blocks in Wuhan to study the air quality of existing urban historical blocks.Using numerical simulation,we clarify the relationship between the spatial form of historical blocks and the diffusion distribution of air pollutants,and propose spatial optimization strategies based on pollutant control.The research results show that the important factors affecting the diffusion distribution of air pollutants in historical blocks are the street spatial form,followed by the building layout.Finally,based on the problems found through numerical simulation and related regulations for historical block preservation,we propose suggestions for updating the exterior spaces of historical blocks.