建筑结构学报2013，Vol.34Issue(8)：150-157,8.
栓钉连接件时变受剪承载力对组合梁施工阶段受力性能的影响
Effect of stud connector's time-dependent shear strength on behavior of steel-concrete composite beams in construction stage
摘要
Abstract
In order to analyze the behavior of the steel-concrete composite beams in construction stage accurately,the law of the stud connector's shear strength with the concrete age was researched by the push-out test.The effect of the stud connector's time-dependent shear strength on the behavior of a continuous curved composite beam in construction stage was analyzed using ANSYS FE analysis software.The analysis results indicate that,the shear strength and stiffness of stud connectors can not be ignored even the concrete age is rather short.The early shear strength increases more quickly,while the later shear strength increases more slowly.The stress and deformation of the curved composite beams in construction stage decrease with the increase of the concrete casting time interval.For the example in this paper,the radial deformation of the composite beam with the casting time interval of 6 h,decreases 26.5％ compared to the result of the composite beam without composite action,and the tangential stress of the composite beam with the casting time interval of 3 d,increases 14.2％ compared to that of 28 d.If the concrete casting time interval of the composite beam is from 6 h to 3 d,the stud connector' s time-dependent shear strength should be used to analyze the behavior of the composite beams in construction stage.关键词
组合梁/施工阶段/栓钉连接件/时变/推出试验/受剪承载力/早期组合作用Key words
composite beam/ construction stage / stud connector/ time-dependent / push-out test / shear strength / early composite action分类
交通工程引用本文复制引用
张彦玲,李运生,赵志杨..栓钉连接件时变受剪承载力对组合梁施工阶段受力性能的影响[J].建筑结构学报,2013,34(8):150-157,8.基金项目
国家自然科学基金项目(51108281),河北省高等学校科学技术研究青年基金项目(2010277),铁道部科技研究开发计划项目(2010G004-J). （51108281）
