Urban Viaducts Influence on the Vertical Concentrations of Particulate Matters

Urban Viaducts Influence on the Vertical Concentrations of Particulate Matters

Jing Xiao, Hong-di He, Rong Gao

Logistics Research Center, Shanghai Maritime University, Shanghai 201306, China

American Journal of Engineering Research and Reviews

Due to the increase of private vehicles in China cities, high-level pollution is often detected in urban street canyons. The study selected Jinlu building as the research object and used FLUCK985 particle counter to collect the particles concentration at different heights, at the same time, combined with meteorological to study the vertical variation characteristics. Finally, combined with the feature of human body, the exposure assessment method was used to analyze the effects of particulate matter on human health. The results are as follows. (1) As the diameter increased, particles number decreased. The CV (Coefficient variation) alongside viaduct was smaller than non-viaduct and the CV degree is weak or moderate. (2) The contamination degree in viaduct is greater than non-viaduct. The particulate concentration decreased with the increase of floor, but near viaduct, the coarse and fine particles showed different trends. (3) The early peaks concentration was more than evening peaks in sunny, windy and rainy days, among them, the sunny concentration was more than rainy days; the windy days concentration was changed during the different diameter. (4) the viaduct RDD was more than non-viaduct. The RDD was highest in Older; the second was Adult and Child RDD was the lowest. The RDD in early peak was higher than evening peak of which PM10 always stay on the nasal cavity. Thus the people should try to shorten linger under viaducts so as to prevent the coarse particles from causing discomfort to nasal cavity.

Keywords: urban viaducts; particle concentration; vertical distribution; pedestrian exposure level

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How to cite this article:
Jing Xiao, Hong-di He, Rong Gao.Urban Viaducts Influence on the Vertical Concentrations of Particulate Matters. American Journal of Engineering Research and Reviews, 2019, 2:16. DOI: 10.28933/ajoerr-2019-04-1805


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