SFRC中群钉连接件抗拔性能数值模拟研究  

Numerical Simulation of Pull-out Performance of Grouped Stud Connectors in SFRC

作　　者：林源 白芳龙 王纪源 张谢东[2] LIN Yuan;BAI Fanglong;WANG Jiyuan;ZHANG Xiedong(Phase II Branch,Hubei Qiaoxiao Expressway Management Co.,Ltd.,Wuhan 432020,China;School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China;Jiangsu Provincial Transportation Engineering Group Co.,Ltd,Zhenjiang 212100,China)

机构地区：[1]湖北硚孝高速公路管理有限公司二期分公司,武汉432020 [2]武汉理工大学交通与物流工程学院,武汉430063 [3]江苏省交通工程集团有限公司,镇江212100

出　　处：《交通科技》2024年第5期72-77,共6页Transportation Science & Technology

摘　　要：为研究钢-钢纤维混凝土(SFRC)组合梁中群钉连接件的抗拔性能,使用有限元软件ABAQUS开展试验数值模拟,分析栓钉数量、钢纤维掺量和栓钉间距对群钉连接件抗拔承载力的影响,结果表明,当发生混凝土破坏时,随着栓钉数量、钢纤维掺量和栓钉间距的增大,群钉连接件抗拔承载力逐渐增大,基于此,提出在一定栓钉间距范围内考虑栓钉数量和钢纤维掺量影响的群钉连接件抗拔承载力计算方法,经验证,计算结果和有限元模拟结果吻合良好,可为群钉连接件设计和施工提供参考。In order to study the pull-out performance of grouped stud connectors in steel-steel fiber reinforced concrete(SFRC)composite beam,finite element software ABAQUS was used to numerically simulate completed experiments.The influence of the number of stud connectors,steel fiber content,and stud connectors spacing on the pull-out bearing capacity of grouped stud connectors was analyzed.The results show that when concrete failure occurs,the pull-out bearing capacity of grouped stud connectors gradually increases with the increase of the number of stud connectors,steel fiber content,and stud connectors spacing.Therefore,a pull-out bearing capacity calculation method of grouped stud connectors considering the influence of the number of stud connectors and steel fiber content within a certain range of stud connectors spacing is proposed.After verification,the calculation method for the pull-out bearing capacity is in good agreement with the finite element results,which can provide reference for the design and construction of grouped stud connectors.

关 键 词：桥梁工程 群钉连接件 有限元分析 抗拔承载力 

分 类 号：U443.37[建筑科学—桥梁与隧道工程]