The Rain Garden Design Research In Beijing

With the acceleration of population growth and rapid urbanization, destruction of urbanwater, wetlands and other natural environment seriously, coupled with inadequate urbanplanning and design is unreasonable and municipal drainage facilities, with varying degreesof rainwater in the rain disaster. Beijing city is a serious water shortage, low rainfall andseasonal distribution is very uneven, hardened area of the city continued to expand, resultingin a huge loss of precious rain, drought problem is very prominent. It is understood that morethan80%annually Beijing rainfall concentrated in summer flood season, the use of rainwaterfor funding, can effectively alleviate the water shortage in Beijing.Rain garden is an effective measure to address urban stormwater and rainwater disasterscombined with landscape design. It temporarily stranded in the rain, effectively reduce stormwater runoff, reduce urban stormwater disasters. It is an eco-stranded source of urbanstormwater treatment facilities, major depression is a manifestation of the landscape greenlandscape. Firstly, defines the concept of rain gardens, summarize, summarize thesustainable landscape theory, the corresponding theoretical landscape ecological designtheory, theory of green infrastructure, BMPs, LID, WSUD, SUDS. Determine the structureand type of rain garden through a lot of reading literature. Mainly to control runoff and runoffpollution control for the purpose of two types of rain gardens. Study abroad rain gardensuccess stories, the importance of the construction of rain gardens proposed analysis. On thisbasis, the characteristics of the Beijing area for rainfall, soil type, rainfall runoff waterquality, vegetation resources and the status of relevant policies, laws, norms and rainwaterutilization status of the project carried out a detailed analysis and summary. Combined withrain gardens and the use of domestic and foreign policy success stories, summarized thespecific method of rain garden design principles, design and construction of the Beijing areamaintenance summary. While the surrounding buildings, roads and parks in the rain gardendesign in order to summarize and conclude the combined approach of rain gardens and thesurrounding terrain, plants, paving, landscape sketches and spatial boundaries. Finally, as abase for a northern wetland rain garden concept design, verification summarized in Beijingrain garden design methods in the design process is feasible, through rain gardens in urbanspace, to alleviate stormwater runoff and runoff rate, mitigate floods, was in Beijing toprovide new ideas and methods in rainwater utilization.