A novel bamboo-concrete composite structure with threaded reinforcement connections is presented. Experimental investigations on the shear behavior of the connectors and the flexural performance of the bamboo-concrete composite beams were carried out. The results indicate that the load-slip behavior of the shear connection with threaded reinforcement exhibits good ductility and that its failure mode is ductile failure. The threaded reinforcement provides an efficient connection before the initial shear failure. The load-displacement curves of the bamboo-concrete composite beams are close to those of the full composite structure, and the midspan displacement is greatly reduced under the same load compared with that of the contrast bamboo beams. The loads P_L/250 and P_L/300, corresponding to the midspan deflections of L/250 and L/300 (L is the span of the beams) of the composite beams, increase by averages of 3.36 times and 3.71 times, respectively, compared to those of the contrast bamboo beams. The load-bearing performance of the beams in the service state is greatly improved. Based on the equivalent cross-sectional stiffness calculated using the γ-method with a reduction of 0.80, the calculated results of the displacement are in good agreement with the test results.

提出了一种具有螺纹钢筋连接的新型竹混凝土复合结构。对连接件的抗剪性能和竹-混凝土组合梁的抗弯性能进行了试验研究。结果表明，带螺纹钢筋的剪力连接的荷载滑移行为表现出良好的延性，其破坏模式为延性破坏。螺纹钢筋在初始剪切破坏之前提供了有效的连接。竹-混凝土组合梁的荷载-位移曲线与全组合结构接近，在相同荷载下，与对比竹梁相比，跨中位移大大减小。负载P _{L /250}和P_L/300，对应组合梁的跨中挠度L /250和L /300（ L为梁的跨度），与对比竹材相比，分别平均增加了3.36倍和3.71倍梁。梁在服役状态下的承载性能大大提高。基于γ法计算的等效截面刚度减少0.80，位移计算结果与试验结果吻合较好。