ABSTRACT
Laminated bamboo lumber (LBL) is considered as a promising green engineering material in civil engineering, due to higher strength/weight ratio and more rapid renewability than wood. An novel OSB webbed bamboo I shaped beam consisted of LBL flanges and OSB web, which were connected by adhesive and nails. The effect of web hole on the performance of the beams were tested to failure to investigate the failure modes and failure mechanism of them. It was showed that the presence of openings has adverse effect on the load carrying capacity and stiffness of composite beams. Holes changed the force transfer path in the web and reduced the strength and stiffness noticeably due to the high shear stresses appearing near the holes. With increasing of hole size, the load carrying capacity of beams decreased dramatically, however the influence was relatively little on the bending stiffness.
