The bending strength,load bearing characteristics and failure mode of bamboo scrimber I-shaped beams were investigated using six bamboo scrimber beams. The results showed that the failure mode of the bamboo scrimber I-shaped beams were caused by the tearing failure occurred in the tensile region of the web section. The strains along the web edge section were fastest-rising with the increase of load,and firstly exceeded the yielding strain and the tearing failure occurred in the tensile region. The crack ext...