Abstract

In this study, a series of experimental tests on untreated species of Bambusa Vulgaris Vittata (BV), Bambusa Heterostachya (BH) and Schizostachyum BrachycladumYellow (SB) were conducted to investigate the effect of strip’s shape, bamboo’s types, and moisture content on the tensile strength of bamboo strip. Four different cutting shapes, which are strip-cut (S), strip cut-side curve (SS), double curve (DC) and single curve (SC) with consideration of the presence of bark and nodes in the strip were investigated for their performance. Based on the results, the SS shape specimen with bark has higher tensile strength. The presence of the node reduced the strength by more than 50%. The type of bamboo has a major impact on tensile strength. The optimum moisture content for bamboo material is 12% at 28 days air-dried. The performance of the BV and BH species for bamboo reinforced concrete beams were then investigated under the three-point bending loading and compared with that of the concrete beams reinforced with steel at the tension zone. The load-carrying capacity of the bamboo reinforced concrete beam is significantly affected by the cross-sectional area of the bamboo reinforcement, while its deflection is controlled by the ultimate tensile strength of bamboo reinforcement.

摘要

在这项研究中，对未经处理的 Bambusa Vulgaris Vittata (BV)、Bambusa Heterostachya (BH) 和 Schizostachyum BrachycladumYellow (SB) 进行了一系列实验测试，以研究条带的形状、竹子的类型和水分含量对拉伸强度的影响。竹条的强度。考虑到带材中存在树皮和节点，研究了四种不同的切割形状，即带材切割（S）、带材切割侧曲线（SS）、双曲线（DC）和单曲线（SC）。表现。根据结果​​，带树皮的 SS 形试样具有更高的抗拉强度。节点的存在使强度降低了 50% 以上。竹子的类型对抗拉强度有很大影响。竹材风干28天最佳含水量为12%。然后研究了竹钢筋混凝土梁的 BV 和 BH 物种在三点弯曲载荷下的性能，并与受拉区钢筋混凝土梁的性能进行了比较。竹筋混凝土梁的承载能力受竹筋截面面积的影响很大，而其挠度受竹筋的极限抗拉强度控制。