The Exploration Of Design Mode On The Small Green Space In Shijiazhuang Based On Rain Garden

At present,China is vigorously promoting the construction of sponge city.The government of Shijiazhuang has also issued relevant policies to clarify the construction requirements and objectives of constructing sponge city.Shijiazhuang as the capital of Hebei province should play a leading role in constructing sponge cities.Rain garden as a kind of effective rainwater management facility which makes deal with urban rain and flood damage combines with landscape design in sponge city technology has extensive application prospects.This article under the rain garden concept discusses a design patterns and method about transforming the small green space into the sponge in urban,aiming at in an ecological and aesthetic way for conducting effective stormwater management of small green space,improving the practicability of the implementation of small sponge in urban.This article is divided into four parts to discuss the design pattern of small green space based on the concept of rain garden.First,the theory of rain garden and small green space is studied.And this article summarizes the similarity of the two aspects in site selection and facility allocation.On this basis,the correlation between rain garden and small green space is further studied.And this article discusses the feasibility and urgency of the small green space design combine with rain garden.The feasibility of the combine design is further verified by the excellent cases at domestic and abroad of the rain garden which had been built in different types of small green space.Second,by investigating the distribution characteristics of small green space and condition of stormwater management in Shijiazhuang,the problems of small green space landscape and stormwater management in Shijiazhuang are summarized,and reasons are analyzed.Through the analysis of rainfall characteristics and rain capacity in Shijiazhuang,this article analyzes the potential of stormwater management in small green space.Thirdly,the design strategy of small green space based on the concept of rainwater garden is emphasized.Firstly,the design goal of small green space is clarified,and the design idea of small green space is proposed from the aspect of planning and design.Different from traditional landscape design strategy of green space,the small green space design based on the rain garden concept is focused on building a technical system integrating ecological and ornamental which through building runoff management system and landscape system.In addition,the rainwater management facilities suitable for different stages of small green space are summarized,and the classification and evaluation are summarized from the source,middle and end of the rainwater runoff.Finally,through transforming and upgrading the small green space in Shijiazhuang,this article verify the feasibility of the proposed design strategy,meanwhile expand and deepen the design strategy by the actual design case.