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通过10个大尺寸矩形竹梁的试验,重点从结构构件层次上研究了新型竹梁的受弯性能。研究表明,竹梁存在四种典型的破坏形态,其允许承受的设计荷载实际是由截面刚度控制,而并非强度控制;竹梁在破坏前,横截面应变沿高度方向的分布基本上呈线性,平截面假定是成立的。同时,还介绍了新型竹梁在抗震安居示范房工程中的应用情况,竹梁的使用性能在实践工程中得到了良好的检验。
Through the test of 10 large-size rectangular bamboo beams, the bending behavior of the new type of bamboo beams is studied emphatically from the structural component level. The research shows that there are four kinds of typical failure modes of bamboo beam. The allowable design load is actually controlled by the section stiffness, not the strength control. The distribution of strain along the height direction of bamboo beam is basically linear before failure, The flat section assumption is valid. At the same time, the application of the new type of bamboo beam in the demonstration project of earthquake-resistant housing was also introduced. The performance of the bamboo beam has been well tested in practice.