考虑界面滑移的剪力钉群等效抗剪刚度研究

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英文篇名：Study of Equivalent Shear Stiffness of Shear Stud Clusters Considering Interface Slippage 作者：王金枝 ; 郭俊峰 ; 毛小敏 英文作者：WANG Jin-zhi;GUO Jun-feng;MAO Xiao-min;School of Civil Engineering and Architecture,Wuhan Institute of Bioengineering;Wuhan Municipal Engineering Design & Research Institute Co.,Ltd.; 关键词：钢混组合结构 ; 剪力钉群 ; 抗剪刚度 ; 界面滑移 ; 有限元法 英文关键词：steel-concrete composite structure;;shear stud cluster;;shear stiffness;;interface slippage;;finite element method 中文刊名：GWQL 英文刊名：World Bridges 机构：武汉生物工程学院建筑工程学院;武汉市政工程设计研究院有限责任公司; 出版日期：2019-01-28 出版单位：世界桥梁 年：2019 期：v.47;No.197 基金：湖北省教育厅科学技术研究项目(B2018281) 语种：中文; 页：GWQL201901010 页数：5 CN：01 ISSN：42-1681/U 分类号：45-49

摘要

针对现有剪力钉抗剪刚度研究中较少考虑混凝土界面滑移,未能体现实际变形的问题,以单塔双索面自锚式悬索桥——朝元门桥为背景,考虑界面滑移,建立了混凝土塔柱与钢结构装饰塔柱间剪力钉群结构有限元模型,并推导出剪力钉群等效剪切刚度简化计算公式。结果表明:有限元计算能模拟钢和混凝土结构界面滑移,群钉抗剪刚度随着滑移的增大逐渐变小;借用板的有效工作宽度计算方法,确定剪力钉群构件中混凝土参与变形的面积,建立的剪力钉群剪切刚度计算公式主要与剪力钉的尺寸和布置等参数有关;推导公式计算值与试验结果、数值分析计算值、实测值一致。
        In the current study of shear stiffness of shear studs,the concrete interface slippage is seldom taken into account,and the problem of actual deformation is not reflected.The Chaoyuanmen Bridge,a single tower self-anchored suspension bridge with double cable planes,was taken as the background in this study.The finite element models of the shear stud clusters between the concrete pylon column and the steel decorative pylon column were established,taking into account the interface slippage.And the simplified calculation formulas for equivalent shear stiffness of shear stud clusters were deduced.The results show that the finite element calculation can simulate the interface slippage of steel and concrete structures.As the slipping amount increases,the shear stiffness of the clustered studs decreases.The method used to calculate the effective working width of plate was employed to determine the deformation area contributed by concrete in the shear stud clusters,the calculation formulas for shear stiffness of shear stud clusters established were mainly concerned with parameters,such as dimension and layout of the shear studs.The calculated results gained from the derived formulas agree with the testing results,data from numerical analysis and the measured data.

引文

[1]苗润池,李龙安,屈爱平.基于地震作用的大跨度混合梁斜拉桥钢混结合点位置优化分析[J].世界桥梁,2017,45(5):76-80.
    [2]蒲黔辉,周阳,施洲.铁路混合梁斜拉桥钢-混结合段受力及参数分析[J].桥梁建设,2016,46(1):12-17.
    [3]朴泷,周高明,吴小兵,等.港珠澳大桥浅水区非通航孔桥钢-混组合梁施工技术[J].桥梁建设,2016,46(2):13-18.
    [4]张建强,郑清刚.沪通长江大桥主航道桥公路桥面钢-混结合段设计[J].桥梁建设,2016,46(4):6-10.
    [5]耿波,王福敏,魏思斯.重庆东水门长江大桥设计关键技术[J].桥梁建设,2017,47(4):90-95.
    [6]田启贤,杜新喜.高性能混凝土复合铺装短栓钉推出试验研究[J].桥梁建设,2016,46(1):40-46.
    [7]Shim C S,Lee P G,Yoon T Y.Static Behavior of Large Stud Shear Connectors[J].Engineering Structures,2004,26(12):1 853-1 860.
    [8]Ellobody E,Young B.Performance of Shear Connection in Composite Beams with Profiled Steel Sheeting[J].Journal of Constructional Steel Research,2005,62(7):682-694.
    [9]周绪红,逯文茹,狄谨,等.钢锚箱栓钉剪力连接件群钉效应及抗剪承载力计算方法[J].中国公路学报,2014,27(12):33-45.
    [10]Lam D.Capacities of Headed Stud Shear Connectors in Composite Steel Beams with Precast Hollowcore Slabs[J].Journal of Constructional Steel Research,2006,63(9):1 160-1 174.
    [11]Xue D Y,Liu Y Q,Yu Z,et al.Static Behavior of Multi-stud Shear Connectors for Steel-Concrete Composite Bridge[J].Journal of Constructional Steel Research,2012(74):1-7.