Study On The Spatial Morphology Of Suzhou Commercial Pedestrian Street Based On Microclimate And Thermal Comfort

The rapid urbanization process leads to frequent extreme climate,which has seriously affected the quality of urban living environment.Commercial pedestrian street is the main place for urban residents to carry out outdoor leisure activities and shopping.Its environmental quality,especially the microclimate environment,is of great significance to enhance the vitality of urban space and create a good experience.Taking Suzhou commercial pedestrian street as the research object,this paper measured the microclimate and thermal comfort of 13 pedestrian streets on the spot,and numerically simulated and analyzed 16 pedestrian street sample models with different spatial forms through orthogonal test and envi-met software,explored the influence mechanism of commercial pedestrian street spatial form on microclimate and thermal comfort,and put forward the corresponding spatial optimization design strategy.This paper aims to provide a scientific basis for the spatial design,physical environment construction and improvement of Suzhou commercial pedestrian street.This paper is divided into six parts:The first chapter is introduction.Through background research and literature review,this paper summarizes the research results in relevant fields at home and abroad,defines the research scope,and expounds the basic content and technical route of the research.The second chapter is the research on the spatial morphological characteristics of Suzhou commercial pedestrian street.Firstly,it introduces the climatic characteristics of Suzhou and the constituent elements of microclimate of pedestrian street;Secondly,the spatial morphological characteristics and microclimate influencing factors of Suzhou commercial pedestrian street are explored;Finally,the spatial sample model of Suzhou pedestrian street is constructed based on the spatial morphological characteristics,which provides a spatial carrier for the measurement and simulation research in the third and fourth chapters.The third chapter is the study of microclimate measurement and simulation analysis.Firstly,the methods and tools of microclimate measurement and simulation are described;Secondly,through the microclimate moving test and interpolation analysis,the typical measuring points are selected for microclimate analysis,and the influence of spatial form factors of Suzhou commercial pedestrian street on microclimate is preliminarily explored;Finally,using envi-met software to simulate the microclimate,the microclimate environmental characteristics of pedestrian streets with different spatial forms are analyzed,and the objective environmental data are provided for the evaluation of thermal comfort.The fourth chapter is the measurement and simulation analysis of thermal comfort.Firstly,the thermal comfort index and its research method are described.The physiological equivalent temperature pet is selected as the thermal comfort index and modified;Secondly,the thermal comfort is calculated by using the measured microclimate data,and the influence of spatial form factors of Suzhou commercial pedestrian street on thermal comfort is analyzed;Finally,based on the simulation results,this paper evaluates the thermal comfort of pedestrian streets with different spatial forms,and provides data support for the correlation research in Chapter 5.The fifth chapter is the research on the spatial form optimization of Suzhou commercial pedestrian street based on microclimate and thermal comfort.Firstly,the correlation between different microclimate elements,thermal comfort and the spatial form of pedestrian street is analyzed,and the influence mechanism of commercial pedestrian street spatial form on microclimate and thermal comfort is revealed;Secondly,based on the above research,this paper puts forward the spatial optimization design strategies of Suzhou commercial pedestrian street,such as street orientation,street height width ratio,building density,underlying surface form and enclosure mode.The sixth chapter is the summary of the full text and the prospect of the future.This paper constructs a systematic research method and provides a data basis for the study of microclimate and thermal comfort of outdoor space in Suzhou.The research results can provide a reference for the construction and transformation of Suzhou commercial pedestrian street.