基于数字技术的老旧住区开放空间微气候模拟优化研究OA

With the advancement of renovation in old residential areas,improving the microclimate of open spaces has become crucial for enhancing the life quality of residents.Taking Nanyuan New Village in Hefei as an example,this study proposes a digital technology-based method,which combines Building Information Modeling(BIM)and 3D point cloud technology,to simulate and optimize the microclimate of open spaces in old residential areas.The point cloud model in Revit is employed to accurately reconstruct the shapes of buildings and vegetation within the open spaces,thereby improving the accuracy of the mi-croclimate simulations.According to the comparative analysis of different locations on the site,the com-parison results between the point cloud model,measured data,and the ENVI-met model show that the Root Mean Square Error(RMSE)of the point cloud model is lower than that of the ENVI-met model by a margin of 0.03 to0.66,the Mean Absolute Percentage Error(MAPE)is0.15%to1.8%lower,and the Concordance Correlation Coefficient(d)increases by 0～0.011 02,indicating that the point cloud model has significant advantages in simulation accuracy.In addition,the study also analyzes the main in-fluencing factors of the microclimate and proposes corresponding renovation measures,providing technical support and references for the improvement of the microclimate in old residential areas.