| As globalisation progresses,climate change and urbanisation have gradually become hot topics in this phase.The Chinese urbanization rate has exceeded 60 per cent in 2019 and a steady increase to 72 per cent is expected in the next fifteen years.Below the profile of climate change and increase the rate of urbanisation,the high concentration of population and buildings leads to changes in the external urban thermal environment,and the phenomenon of high urban temperature and heat wave becomes more and more Common.lo outside area of the residential district is one of the places where people lend the most Attention.The The comfort of the thermal environment directly affects the quality of life of people.With rapid economic development,Chengdu has become the region with the highest rate of urbanization in western China,and the phenomenon of high temperature and heat wave in the city is of course.it is representative to take Chengdu as an area of research.Yes the influence of the territorial morphology parameters of the residential district on the microscale thermal environment assessment index is discussed.Content of the research mainly: first,the research center of the city of chengdu(around)the residential area at high temperature and temperature 111,including the press report,the density of the building and the height of the building,the form of architectural layout,the speed and parameters of the residential area,such as the size of the space shape,the print ratio range of 1.0 ～5,The building density range is18.00%— 66.72%,the speed range of 15.00% —59.00%,the average height range from 8.00 m to 100.8 m,the layout form of the building is given priority to with determinant,type of point group the number of times,no Come on.this base,combined with the three dimensions of the floor surface ratio,the building density and the layout form of the building,28 residential districts have been selected as typical cases for the study.With the surface ratio of the floor of 0.8,1.2,1.5,2.0,2.5,3.0,4.0,5.0 as demarcation line,the 28 th residential subdivision of typical cases have been divided into seven types of neighbourhoods residential.Subsequently Yeah.the ENVI-MET microclimate simulation software has been used to obtain the simulated distribution diagram of air temperature,relative humidity and physiological equivalent temperature,and the simulated distribution characteristics have been analysed qualitatively.Finally based on simulation numerically,factors affecting the external thermal environment in the residential district are analysed quantitatively using a multiple regression analysis method.The results show that: for the open area within the residential community,if there is no block of solar radiation at pedestrian level,the open area in the center of the residential community is more likely to form high local temperatures;at the beginning of the architectural project,The angle between the buildings in the lower tuyer and the prevailing wind must be reduced as much as possible.possible.If the angle between the prevailing wind and the buildings in the lower tuyere cannot be reduced,the length of the buildings in the lower tuyere can be reduced,The analysis of relative humidity in the residential district shows that the direction of the dominant wind has a great influence on the distribution of relative humidity.The relative humidity of the wind is greater and the relative humidity relative to the low air is minor.Yes notes that the underlying surface and the height of the building have a major influence on the equivalent physiological temperature of the area;residential.Pi The smaller the residential area,the more uniform the distribution of the physiological temperature equivalent.Through a multiple regression analysis,it is found that the key is the optimal layout for the outdoor thermal environment in the summer of Chengdu residential district. |
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