The research of gray space design of architecture based on green stormwater infrastructure application

Abstract

Green stormwater infrastructure has become an important issue in the development of modern ecological city. However, the research about green stormwater infrastructure combined with architecture is not sufficient, for which usually focus on community planning in meso scale or landscape design in micro scale. The green stormwater infrastructure associated with building can be as green roof, vertical greening and gray space etc. Through data collection, case analysis and field research, the paper combined with architectural ecology and aesthetic mainly studies the public space closely connected with building easily accessible to citizens, which can be called gray public space. Based on the introduction to concept, principle and composition of green stormwater infrastructure and the basic connotation of gray space, the wisdom of the Chinese traditional architecture and building group in the rainwater utilization is draws out. Chinese traditional courtyard, alleys and garden not only build landscape utilizing stormwater and related infrastructure, but also collect rainwater for recycling or seeping directly into the ground. After the comparison of traditional gray space and the one based on stormwater utilization, three gray space models based on green stormwater infrastructure are summarized, such as separation-association based on the landscape function, half-association based on purifying stormwater to drainage and complete association based on recycling stormwater. Finally, this paper explains and confirms the three models through the rain and sewage separation system and purification system in the courtyard of Sidwell Friends School.