广州赤沙地铁车辆段低影响开发设施景观设计

Landscape Design of Low Impact Development Facilities of Chisha Metro Depot in Guangzhou

摘要:

随着海绵城市建设的推进，低影响开发（LID）理念在城市建设中日益受到重视，但国内外关于地铁车辆段低影响开发的研究较为薄弱。以广州赤沙地铁车辆段为例，采用容积法测算海绵城市建设指标，提出适用于车辆段场地的 LID 设施与景观整合设计方法。研究表明，通过设置合理的LID 设施，项目综合雨量径流系数为 0.28，年径流总量控制率达 70%，主要指标均满足广州市海绵城市建设要求。最后提出应基于场地现状分析构建合理排水体系，通过竖向渗管、雨水树槽、生物滞留池等 LID 设施与景观元素的有机融合，提升地铁车辆段景观效果。

Abstract:

With the advancement of Sponge City construction, the Low impact development (LID)concept has gained increasing attention in urban infrastructure planning. However,research on LID of metro depot is relatively weak at home and abroad. This study focuseson the Chisha Metro Depot in Guangzhou, adopting a volumetric method to assessSponge City construction indicators and propose an integrated design method of LIDfacilities and landscape applicable to the metro depot. The research demonstrates thatthe implementation of well-designed LID facilities achieves a comprehensive rainfallrunoff coefficient of 0.28 and an annual runoff volume control rate of 70%, meeting keyrequirements of Guangzhou's Sponge City construction standards. The metro depotshould be based on the current situation of the site analysis to build a reasonable drainagesystem, through the rainwater tree trenches, bioretention ponds and other LID facilities andlandscape elements of the organic fusion, which can enhance the landscape effect of thesubway vehicle section.