基于雨洪管理的城市道路绿地景观设计研究

Landscape Design of Urban Road Green Space Based on Stormwater Management

以我国城市现状排水方式与存在的问题为起点,以雨洪管理的理念为指导,以湖南省长沙市雨花区沙湾路绿地景观改造为例,对城市道路绿地景观设计进行探索。城市道路绿地形式多样,构成要素复杂,且道路环境条件严苛,这些特点都是城市道路雨水资源利用的前提和限定条件。雨水资源利用设施主要体现对雨水的渗透、蓄集、收集输送和净化处理4个方面的功能,在城市道路绿地建设中适用的雨水资源利用设施主要有透水铺装、渗透管渠、生态浅草沟、下凹式绿地、雨水花园等形式。

Starting with the current status of urban drainage in China and existing problems,taking the concept of stormwater management as a guide,landscape design of urban road green space is explored with the example of the green landscape reconstruction of Shawan Road in Yuhua District of Changsha City,Hunan Province.The urban roads have various forms of green land,their components are complex,and the environmental conditions of the roads are harsh.These characteristics are all the preconditions and conditions for the use of urban road rainwater resources.The rainwater resources utilization facilities mainly embody the functions of rainwater infiltration,accumulation,mobile transmission and purification.The rainwater utilization facilities that are applicable to the construction of urban road green space include permeable pavement,percolation channels,ecological grass ditch,concave green,rain garden and other forms.