Optimization Research On Spatical Morphology Factors Of Lhasa Residential Area Based On Microclimate

Under the background of rapid urbanization and increasing urban population,problems such as out-of-control urban spatial patterns and declining environmental quality have become increasingly prominent,resulting in the deterioration of urban microclimate and directly affecting the comfort of the living environment.Residential community is the main form of residence of China.The thermal environment comfort has an important impact on people's daily life.This paper takes Lhasa urban settlement as the research object,through field research and computer simulation analysis,combined with orthogonal experimental design,quantitative analysis explored the optimal layout of urban settlements suitable for LhasaThis article is divided into five chaptersThe first and second chapters are the research basis and methodology of this topic The first chapter briefly introduces the research background,research content and significance,and conducts extensive research on the content of related fields at home and abroad,and summarizes the research results and deficiencies in related fields Based on the previous research results,Chapter two introduce the characteristics of microclimate environment in urban residential areas,and the micro-climate-related spatial morphological indicators were extracted from the two aspects:plot control indicators and urban settlement layout.The microclimate evaluation indicators were also determined and the climate environment and outdoor thermal comfort of Lhasa were analyzed.The third chapter is the investigation of the status quo.First,we will briefly sort out the development of Lhasa urban settlements.Secondly,extensive research on the newly built urban settlements in the Lhasa area is carried out.Based on this,the indicators related to the spatial layout of Lhasa urban settlements are analyzed,including the form of building layout,floor area ratio,building spacing,building orientation,etc.This is based on the establishment of a representative Lhasa urban settlement layout,which becomes the standard model for numerical simulation of this paper.The fourth chapter uses ENVI-met v4 to simulate the typical urban residential microclimate in Lhasa.It compares with the field test results,testified the reliability of ENVI-met v4,and definited the boundary conditions for simulation.In combination with the layout morphological index closely related to the microclimate of the residential area and its corresponding factor variable level,the orthogonal experimental design method was used to conduct a numerical simulation study on the layout of the urban residential area,and the influence of each morphological index and its interaction on the microclimate was determined based on the evaluation of the relevant microclimate indexThe fifth chapter integrates the optimization design method of residential area layout based on outdoor microclimate,and summarizes the optimal layout strategy of Lhasa urban settlements.