Bamboo oriented strand boards (BOSB) are very suitable for application in construction structures because of their excellent mechanical properties. This research investigated the shear performance of bamboo I-beams composed of BOSB to verify the structural performance of I-beams. Short beam shear tests and uniform vertical load capacity tests were performed to investigate the effects of various factors on the properties of bamboo I-beams. The results showed that shear bearing capacity and uniform vertical load capacity of bamboo I-beams exceeded the requirements for performance-rated I-Joists in APA PRI-400-2021. The shear bearing capacity, stiffness, and failure types of bamboo I-beams were determined by the web materials, flange–web joint type, and beam depth. Increasing the bamboo I-beam depth without changing the flange dimensions had no significant effect on the shear bearing capacity and stiffness of bamboo I-beams. The shear bearing capacity and stiffness of wooden orientated strand board webbed I-beams were almost half of those of bamboo I-beams with the same depth. The shear bearing capacities of specimens calculated based on the shear bearing capacity calculation formula of I-beams recommended in the Canadian standard were reasonably close to the experimental results. The uniform vertical load capacity of bamboo I-beams gradually decreased as the depth of the bamboo I-beam increased from 300 mm to 500 mm.

中文翻译：

---

竹工字梁的抗剪特性和均匀竖向承载力

竹定向刨花板 (BOSB) 因其优异的机械性能而非常适用于建筑结构。本研究调查了由 BOSB 组成的竹工字梁的抗剪性能，以验证工字梁的结构性能。进行了短梁剪切试验和均匀竖向承载力试验，研究了各种因素对竹工字钢性能的影响。结果表明，竹工字梁的抗剪承载力和均匀垂直荷载能力超过了 APA PRI-400-2021 中对性能等级工字梁的要求。竹工字梁的抗剪承载力、刚度和破坏类型由腹板材料、翼缘-腹板接头类型和梁深度决定。在不改变翼缘尺寸的情况下增加竹工字钢深度对竹工字钢的抗剪承载力和刚度没有显着影响。木质定向刨花板带蹼工字钢的抗剪承载力和刚度几乎是相同深度竹工字钢的一半。根据加拿大标准推荐的工字钢抗剪承载力计算公式计算的试件抗剪承载力与试验结果相当接近。随着竹工字钢深度从300 mm增加到500 mm，竹工字钢的均匀竖向承载能力逐渐减小。木质定向刨花板带蹼工字钢的抗剪承载力和刚度几乎是相同深度竹工字钢的一半。根据加拿大标准推荐的工字钢抗剪承载力计算公式计算的试件抗剪承载力与试验结果相当接近。随着竹工字钢深度从300 mm增加到500 mm，竹工字钢的均匀竖向承载能力逐渐减小。木质定向刨花板带蹼工字钢的抗剪承载力和刚度几乎是相同深度竹工字钢的一半。根据加拿大标准推荐的工字钢抗剪承载力计算公式计算的试件抗剪承载力与试验结果相当接近。随着竹工字钢深度从300 mm增加到500 mm，竹工字钢的均匀竖向承载能力逐渐减小。