Abstract

For the developed surface area of Xishuangbanna Dai's houses' roof be equal to about 85% of the total floor area, the reasonable choice for materials of roof frame has the important meaning for conserving energy and materials. Bamboo is a kind of fast-growing and renewable natural building material. Replacing the wooden roof frame with bamboo roof frame can achieve good ecological and economic effects. Bamboo pole has cavity, culm wall is thin and easy to split. These special characteristics of bamboo led to the existing structure technology of bamboo roof frame are very complex. In order to make up these defects, this paper proposed three methods for strengthening the bamboo poles. First, after the bamboo wall cut open, sticking the half log and fixing the log on the bamboo culm by pneumatically driven nail, makes bamboo pole can adopt the connection method of wood construction. Second, forms the partial solid body in the closed bamboo cavity, raises the bamboo pole's lateral bearing capacity. Third, does thicken processing for the bamboo wall in its specific positions, in order to enhance the anti-splitting ability. By using these structure measures, the joint structure of the new bamboo roof frame can be simplified, and the stability also greatly be proposed compared with the traditional bamboo roof frame.

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