Structure Renewal And Sustainable Using Of Natural Building Materials On Yunnan Folk Houses

There are 26 minorities in Yunnan province. The colorful and plentiful Yunnan folk houses are not only the important carrier of national culture, but also the residential architecture for villages and small towns. For sake of logging band, the wood structure of Yunnan traditional folk houses had lost the support from forest resources. At the same time, the use of modern structure such as brick-bearing wall structure and frame bearing structure with reinforced concrete cast on site is confronted with many problems by the limitation from economy and technology in villages and small towns. Lacking of improvement, nature building materials which used for wall construction was replacing by sintered clay solid brick gradually for making enclosure wall of folk house. If these problems couldn't be solved properly, the strategic target which change Yunnan to a big province on national culture, a strong province on tourism economy, and construct socialism new rural area with a flavor of national culture would be interfered definitely.Based on the on-site investigation and by way of theoretical analysis and experiment, this dissertation explores strategies and technologies for structure renewal and sustainable using of nature building materials of Yunnan folk houses. On the respect of structure renewal, the thesis developed both IMS system with small PC component and light weight bamboo-wood structure. On the respect of natural building material using, the thesis integrated the so far adobe technology by concept of functional adobe, develop light weight adobe reinforced with plant fiber and cement. A new kind of wall which uses bamboo as skeleton and a new kind of prefabricated floor slab filled with bamboo were put forward too. These two kinds of products are light in weight and good in heat insulation. Some of the new technologies mentioned above had been put into practical use. The technology of IMS system with small PC components had been localized in Xishuangbanna. This dissertation is mainly composed of three chapters, i.e. the chapter of investigating, the chapter of researching and the chapter of practicing.The chapter of investigating——Choose Dai's folk houses in Xishuangbanna and Tibetan's folk houses in Shangri-la as investigating objectives. These two minority regions located south and north of Yunnan province respectively. By refining common and specific character, the dissertation discloses problems which Yunnan folk houses are facing with during construction.The chapter of researching——Develop new technologies which satisfied with the strategy on structure renewal and sustainable using of natural building material. The chapter of practicing——Improve and prefect technology, and promote technology localization by construct new folk house demo-projects. Concrete theoretical and technical supports are provided for the sustainable construction of Yunnan folk houses.The outcome of the research will be significant for the sustainable construction of the residential architecture for villages and small towns both in abroad and other provinces of China.