哈尔滨工程大学学报2024，Vol.45Issue(6)：1076-1084,9.DOI:10.11990/jheu.202203013
钢-混凝土组合梁螺栓连接件受剪性能试验研究
Experimental study on the shear behavior of a bolt connector in a steel-concrete composite beam
摘要
Abstract
The diameter of a traditional bolt connector is smaller than that of the predrilled holes in a steel beam,resulting in a gap between the bolt and the hole wall,possibly causing a relative slip between the steel beam and the concrete slab on the top,thereby increasing the deflection of the combined beams.To minimize or eliminate the above mentioned gaps,the reamer and threaded hole bolts are introduced as the shear connectors of composite structures,and the cone sleeve self-lock bolt connectors are proposed.Eight push-out tests were designed and im-plemented on the bolt connectors.According to the load-slip curve of each specimen,the specific differences in shear mechanical properties,such as shear-bearing capacity,slip capacity,and shear stiffness between three types of bolt connectors and traditional bolt connectors,were studied,showing that the failure modes of the three bolt connector types are consistent with those of the traditional bolt connectors.These failure modes are the shear failure of the bolt rod,and the concrete around the bolt has no peeling phenomenon.All three bolt connectors are similar to traditional bolt connectors in terms of shear-bearing capacity.According to the load-slip curve of the specimen,these three bolt connectors can be divided into elastic,elastic-plastic,and failure stages.The ductility coefficient and shear stiffness of the three bolt connectors are better than those of the traditional bolts.Considering the mechan-ical properties,construction performance,and economy,reamed bolt connectors should be used as the shear con-nectors of composite structures.关键词
钢-混凝土组合梁/螺栓连接件/抗剪性能/推出试验/施工性能/抗剪承载力/抗剪刚度/滑移Key words
steel-concrete composite beam/bolt connector/shear behavior/push-out test/construction perform-ance/shear capacity/shear stiffness/slip分类
建筑与水利引用本文复制引用
杨勇,张树琛,陈辛,冯世强,杨仕聪..钢-混凝土组合梁螺栓连接件受剪性能试验研究[J].哈尔滨工程大学学报,2024,45(6):1076-1084,9.基金项目
陕西省自然科学基础研究计划(2019JC-30) （2019JC-30）
国家自然科学基金面上项目(51978565). （51978565）
