桥阴海绵体颗粒物ENVI-met模拟及水景观改善研究

Study on Particulate Matter based on ENVI-met Simulation and Landscape Improvement of Cavernous Body under Urban Viaduct

本文提出结合雨水就地收集管理的桥阴海绵体建设,减缓桥阴颗粒物污染。以武汉高架桥为研究对象,通过ENVI-met软件建立桥阴水景观的颗粒物PM2.5、PM10消减模型,对比10%、45%、80%3种不同的水体占比的模拟结果,研究发现:适当增加水体面积,匹配桥阴空间灵活设置雨水、水体管理形式,桥身安装水箱对雨水就地收集净化和喷淋等措施,有助于改善桥下颗粒物环境和提升空间景观质量。

Combined with the construction of space cavernous body under viaduct for rain water’s local collection and management to slow down particulate matter pollution in the space,taking Wuhan viaduct as the research object,the PM2.5 and PM10 particulate matter reduction models of plant and water landscape under viaduct is established by ENVI-met software,and the simulation results of 10%,45%,and 80%of three different water proportions are compared.The study finds that the water body area should be appropriately increased,and the rainwater/water body management form can be flexibly set to match the bridge shade space.The bridge body is installed with a water tank to collect,purify and spray rainwater on the spot.Such measures should be taken to help to improve the particulate matter environment under the bridge and enhance the quality of the space landscape.