摘要
为建立组合桥梁中开孔钢板剪力连接件(PBL)剪力连接件的抗剪承载力计算公式,开展8个PBL连接件的单调加载推出试验。着重研究静载下不同承压方式、混凝土强度、开孔数量和贯穿钢筋直径对连接件抗剪承载力的影响。基于变形协调条件分析端部混凝土、孔内混凝土榫和贯穿钢筋对单孔连接件极限承载力的贡献;多孔连接件的抗剪承载力则在考虑应力重分布的基础上将单孔连接件承载力进行叠加。试验结果表明:提出的PBL连接件抗剪承载力计算模型物理意义明确,计算结果精度较高,可用于单排PBL剪力连接件的承载力计算。
To establish the expression of shear capacity of PBL(Perfobond Leiste)connectors,monotonic loading push-out tests of eight PBL connectors were carried out.The influences of different bearing types,concrete strength,the number of hole(s)in the steel plate and the diameter of transverse rebar passing through the hole(s)on the shear capacity of PBL shear connectors in static loading were investigated emphatically.According to the deformation compatibility condition,the contribution of end concrete,concrete dowel and transverse rebar passing through the hole(s)to shear capacity of the shear connector with single hole were analyzed.The shear capacity of connectors with multiple holes were obtained by the superposition of the shear capacity of connectors with single hole on the basis of stress redistribution.Experimental results showed that the calculation model of the shear capacity had clear physical meaning and desired computational accuracy.The calculation model can be used to calculate the shear capacity of single row PBL shear connectors.
作者
杨勇
陈阳
YANG Yong;CHEN Yang(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China)
出处
《工程力学》
EI
CSCD
北大核心
2018年第9期89-96,共8页
Engineering Mechanics
基金
国家自然科学基金项目(50708040
50978109)
关键词
组合桥梁
PBL剪力连接件
推出试验
变形协调条件
抗剪承载力
composite bridge
PBL shear connectors
push-out test
deformation coordination condition
shear capacity
