Renewal Strategy Of Urban Residential Building Stock In A Resource Conservation Perspective

The residential building stock of Tianjin Central City has a large size anddiversity in height, year of construction, material and structure. The renewal anddevelopment of the urban housing stock account for large amount of resourceconsumption and environmental impacts, which has caused wide attention. However,the composition, average lifespan and impacts of the housing stock had not beenthoroughly studied yet. There is a need to set up visual database and quantitativemodel for urban fragments, in order to simulate and optimise its evolution andrenewal in a resource conservation perspective.Anshan Road Historic District and Anshan West Road Neighborhood wereselected for the case study, which have different background and problems. Theresidential buildings were classified into different types, and their dynamic evolutionwas reviewed. Life cycle analysis of each type reference buildings is done withSimaPro software, in order to calculate the reference flow of different stages of theirlife cycle. The operational energy consumption was validated through literatureresearch. With the software SPSS, the average lifespan of various types of residentialbuildings of the case study areas are analysed and survival curves of different types ofresidential buildings are established. The results from the two case study areas werecompared to find out the difference and the possible factors. All the above mentionedinformation are visulised and analysed with GIS. Then4D-GIS model of thefragments were established through adding time factor to the GIS model to visulisethe evolution of the stocks and the flows. Finally, the building stock dynamic analysismodel, FRAGSIM was used to do scenario analysis to find out the impacts ofdifferent renewal strategies of the two fragments. The methods and models can beused by the urban planning departments to select the optimized strategy.