The Study On Environmental Improvement Mechanism Of Roof Garden And Its Design Application

With the intensification of the urban housing circumstance problem, the rooftop garden develops rapidly in the background of construction of saving society for its unique advantages such as the intensive use of the limited urban space, the increase of the green aera in city, the improvement of the ecological environment, the improvement of the energy-saving effect of the buildings and so on. In this dissertation, the roof garden is taken as the research object, and its improvement effect on environment is studied by experimental theoretical study.And the conclusions of the study are applied in the design of the roof garden. The main contents and achivements in the dissertation are as follows.Firstly, by doing the temperature control experiment of roof garden, the temperature adjustment effect is studied in detail. The experiment results have shown that, the cooling effect is most obvious in the hot afternoon. In order to solve the cross-stress of high temperature which is observed in the temperature control experiment, the antomatic water-saving irrigation process which is controlled by temperature and humidity is designed by taking using of automatic water-saving micro-irrigation technology. For the aim of energy conservation and environmental protection, the energy-saving measures of roof garden is studied in depth. The antomatic temperature and humidity irrigation technology is used to make effective use of the solar in the roof garden.Secondly, the urban water environmental improvement effect of roof garden is studied. And the rain water usage system is improved based on the study on the feature of urban rain water usage system and the infiltration purification effect of the soil. The reform proposals of the greenland and pavement of roof garden are given for the aim of decrease the earth's surface rainwater and purging the rainwater pollution.Thirdly, the roof garden project of Shuyang Jiankang Homestead which is built on the third floor platform of No.92 Building is taken as an example, and the design of rooof garden which can enhance the environmental improvement effect is presented based on the combination of the above conclusion of the study.