摘要
在城市化进程的当下,城市的快速扩张带来了人居环境的急剧恶化,如城市热岛、空气污染等。与此同时,各地兴起了生态城市的规划与建设,人们对于城市微气候的关注与研究也逐日递增。在山西晋中起步区低碳城市控规研究的背景下,采用计算机定量模拟方法,以街区微气候为研究对象,通过将参照街区(大街区)与含绿道的街区进行模拟实验,对两种街区内路面、建筑间和绿化公园的风热环境进行对比分析,探究绿道对街区微气候的影响。研究发现,就风环境而言绿道有利于维持街区风速的稳定;对于热环境,绿道有一定降温效果。从山西晋中的气候背景出发,在冬季,绿道对街区而言有很好的挡风效果,对于降低建筑间和绿化公园的风速的贡献尤其突出,分别降低21%和7%。在夏季,绿道也有较好的降温遮荫效果。因此,就山西晋中而言,绿道对街区微气候具有一定的改善作用。
In the current urbanization process,the rapid expansion of the city has brought about a sharp deterioration of the human settlement environment,including urban heat islands and air pollution.Meanwhile,the planning and construction of eco-cities have also emerged in various places,and people’s attention and research on the city’s microclimate are increasing day by day.The improvement of greenways on micro-climates is explored in the context of low-carbon city control planning in the Jinzhong,Shanxi.The research adopts computer quantitative simulation method and takes the microclimate of the block as the research object.Through the simulation experiment of the reference block and the block containing the green road,the wind and heat environment of the pavement,building and green park in the two blocks are compared and analyzed.The effect of greenways on the microclimate of the block is expounded.The study found that,as far as the wind environment is concerned,the greenway is conducive to maintaining the stability of the wind speed of the block;for the thermal environment,the greenway has a certain cooling effect.Starting from the climatic background of Jinzhong,Shanxi,in winter,the green road has a good windshield effect on the block,especially for the reduction of the wind speed between the building and the green park,which is 21%and 7%,respectively;in summer,the greenway also has better cooling and shading effects.Therefore,as far as Jinzhong in Shanxi is concerned,the greenway has a certain improvement effect on the street microclimate.
作者
邓志钱
晁军
申倩
刘延召
陈博文
DENG Zhi-qian;CHAO Jun;SHEN Qian;LIU Yan-zhao;CHEN Bo-wen(School of Architecture and Urban Planning,Beijing University of Civil Engineering and Architecture,Beijing 100032,China)
出处
《建筑节能》
CAS
2020年第9期90-96,共7页
BUILDING ENERGY EFFICIENCY
关键词
微气候
街区形态
绿道
micro climate
block morphology
greenway system
