Research On Structure Design And Ecological Effect On Urban Slow Traffic

With rapid growth of urbanization in China,slow traffic occupies an important position in the urban road increasingly.It can solve the traffic conflict under different speed,traffic problem of people with slow speed and other difficult issues effectively.Also,it can guide residents to walk or by bike/bus to achieve environmental protection in the city and harmonious development of economy and society.But existing siow traffic of urban road using impervious pavement affects effective utilization of rainwater and destroies ecological balance of city surface seriously.And it increases the urban noise pollution urban heat island effect.Therefore,it has great practical significance to research siow system of permeable pavement.Based on method of combining theoretical analysis and experiments,different structure characteristics and applicability of permeable slow system were analyzed in this paper.Mix design and road performance of different permeable materials were systematically studied.The structure design of permeable slow system was established.And ecological effect of permeable slow system was evaluated.The main research contents are as follows:(1)Characteristics and applicability of typical structure using permeable slow system were fully analysed.Mix design of different permeable materials were systematically studied.Structure design schemes of permeable pavement in the surface,base and cushion were proposed.And road performances were analyzed to provide the basis for selecting structure scheme of permeable pavement.(2)According to traffic conditions,classification standard of permeable structure was deeply studied.Based on classification of rainfall,drainage design scheme of permeable slow system was proposed.Structure design flow of permeable slow system was determined.Combination scheme of ecological slow system using permeable pavement was recommended.(3)Main ecological effects of permeable slow system were comprehensively evaluated,such as drainage,noise reduction and reduction of heat island effect.According to effects of drainage,noise reduction and reduction of heat island effect,their classification standards were proposed respectively.