（南京林业大学土木工程学院， 南京  210037）

［摘要］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。

［关键词］组合结构； 竹材； 混凝土； 连接件； 荷载-滑移关系

中图分类号：TU375-3， TU366文献标识码：A文章编号：1002-848X(2017)17-0020-04

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

Zhou Mengqian, Wei Yang, Ji Xuewei, Cheng Xunyu

(College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China)

Abstract: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.

Keywords:composite structure; bamboo; concrete; connector; load-slip relationship

*国家自然科学基金（51208262），江苏省自然科学基金（BK20151520），江苏省“333”工程（BRA2016421），“青蓝工程”项目（QL2017），江苏高校优势学科建设工程资助项目（PAPD）。

通讯作者：魏洋，博士，教授，博士生导师，Email:wy78@njfu.edu.cn。