Study On The Influence Of The Residential Green Space Patterns On Microclimate In The High-rise Residential Areas Of Jinan

The population agglomeration brought by urbanization has caused the need of space intensive development,and the importance of high-rise residential areas in the construction of urban residential areas has gradually emerged.With the improvement of people's living standard,residents' pursuit of living quality has also been improved.Green space in high-rise residential areas is not only an important natural space in urban ecological environment,but also an important entry point to improve the living quality of residents.Among the related researches on residential green space,there are many researches on the influence of the quantity of green space on environmental quality.In the relevant standards and norms,there are many quantitative rules for residential green space.Relatively speaking,in the related researches and rules,the contents of the relationship between the spatial form of residential green space and environmental quality are less.By studying the microclimate characteristics of different green space patterns in high-rise residential areas,this paper puts forward targeted methods to improve the environmental quality of residential areas.The main research objects of this paper is high-rise residential areas in jinan.In order to systematically and comprehensively understand the real situation of green space patterns of high-rise residential areas in jinan,258 high-rise residential areas in 7 municipal districts including lixia district,huaiyin district,tianqiao district,shizhong district,changqing district,licheng district and zhangqiu district are quantitatively analyzed and classified into green space patterns.Through sorting out,this paper divides the green space patterns of high-rise residential areas in jinan into five types: greenland base type,central type,group type,determinant type,block type.The green space of the greenland base type usually occupies a large proportion of residential land area,forming the form of green space surrounding other land.The green space of the central type generally forms a green space with a relatively large and concentrated form in the center of the residential area.The green space of the group type generally form into groups and groups,forming a number of relatively concentrated green space.The green space of the determinant type takes the form of row formation and relatively regular form.In general,the green space of the block type is relatively dispersed and the continuity is relatively weak.Among the above five types,two examples of the central type,two examples of the group type and two examples of the determinant type are selected for the measured study.The measured study selected specific time points before and after the autumnal equinox to carry out the measured microclimate elements,and then summarize the spatial characteristics of air temperature,humidity,wind speed,WBGT of high-rise residential areas with three green space patterns on the measured day through graphical analysis.An example of the central type,an example of the group type and an example of the determinant type are selected for software simulation study.The selected research dates are the winter solstice day of 2017,the spring equinox day of 2018,the summer solstice day of 2018,and the days before and after the autumn equinox of 2018.In each residential area,two time points of day and night are selected for each solar term day.The dimensions of buildings and sites in the model are set according to the actual space sizes of the residential areas.Through the comparative analysis of the software simulation results and the measured results and systematic arrangement of the results,the planar spatial distribution characteristics and numerical characteristics of the microclimate characteristics in high-rise residential areas with three types of green space patterns,namely,central type,group type,and determinant type,are summarized at different time of different solar terms.The optimization research basing on the results of measured study and software simulations is studied in this paper.Based on the typical space forms of central,group and determinant green space patterns,three different layout modes of every pattern are set up and simulated by software.Combined with the climate characteristics and human comfort characteristics of jinan,some space optimization suggestions of three types of green space patterns are proposed to improve human comfort.In this paper,the spatial distribution and numerical characteristics of microclimate in high-rise residential areas with three types of green space patterns,i.e.central,group and determinant,in different solar days and at different times,are analyzed through the mutual verification of field measurements and software simulation studies.This paper explores the influence of different high-rise residential green space patterns on its microclimate and the optimization methods of high-rise residential green space patterns.