竹-混凝土剪力连接件荷载-滑移性能比较研究

Comparative study of load-slip performance of bamboo-concrete shear connectors

为研究竹-混凝土剪力连接件力学行为,对3组6个竹-混凝土剪力连接件进行了静载试验,连接件的类型分别为栓钉型、凹槽型和凹槽-栓钉型。研究结果表明:栓钉型剪力连接件的破坏模式属于延性破坏,而凹槽型和凹槽-栓钉型剪力连接件破坏模式属于脆性破坏,栓钉型剪力连接件的荷载-滑移曲线存在完全塑性阶段,极限位移大,延性系数大,承载力低;凹槽-栓钉型和凹槽-栓钉型剪力连接件初期基本无滑移,承载力高,延性系数小,滑移变形能力差。

In order to investigate the mechanical behavior of bamboo-concrete shear bamboo-concrete connectors,three groups of six shear connectors were tested under static loading. The connectors had three types of dowel connectors,notch connectors and dowel-notch connectors. The results show that the failure modes of the dowel connectors are ductile,while the failure modes of the notch connectors and dowel-notch connectors are brittle. The dowel connector has a fully plastic phase in the load-slip curves,and shows large ultimate displacement,large ductility coefficient,and low bearing capacity.The notch connectors and dowel-notch connectors has almost no slip in the early stage in the load-slip curves,with high bearing capacity,low ductility coefficient,and poor slip ability.