建筑密度对街区热环境影响分析

Analysis of Impact of Building Density on the Block Thermal Environment

该文针对高效集约的城市发展需求,以街区尺度为着眼点,在案例研究的基础上,利用热环境模拟分析软件探索建筑密度与街区热环境的内在联系。通过实验对比发现建筑密度提升,能够在日间(8:00—18:00)和全天(1:00—24:00)降低街区的热岛强度。证明适度提高建筑密度对街区热环境有改善作用,高密度紧凑发展模式下的街区热环境是可实现可接受的。通过该研究,在城市设计中可对日间、夜间街区热环境进行综合考量,选择合适的密度,以保证街区热环境的安全和舒适。

For efficient and intensive urban development needs, focusing on a district scale, on the basis of case studies, thermal environment simulation analysis software DUTE was used to research the internal connection between the building density and the block thermal environment, Specifically, Phoenics and DUTE were used to multidimensional verify the influence mechanism of building density on the block thermal environment. Through experiment comparison, it is found that increasing the building density can reduce the heat island intensity on the block during the daytime （8：00-18：00） and the whole day （1：00-24：00}. It is proved that increasing building density of blocks moderately could improve the thermal environment, and the block thermal environment under high density compact development pattern is acceptable. Through the research, comprehensively considering the block thermal environment in day and night during the urban design, choosing the proper density, can ensure safety and comfort of the block thermal environment.