外伸端板高强度螺栓抗拉连接设计方法研究
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摘要
通过建立系列有限元分析模型研究了外伸端板高强度螺栓抗拉连接的力学性能,分析中考虑了不同端板厚度和螺栓直径变化对连接节点受力性能的影响。研究结果表明,高强度螺栓总拉力应由外加荷载引起的螺栓拉力和端板弯曲变形产生的撬力组成。通过分析拟合得到由外加荷载产生的螺栓拉力和螺栓撬力的分布模型和计算公式,并分别给出摩擦型和承压型两种类型的高强度螺栓考虑撬力影响抗拉连接承载力计算公式。
The mechanical behavior of high strength bolts of extended end-plate connections are studied by finite element analysis in the paper,and different finite element models are established considering the influence of different end-plate thicknesses and diameters of bolts.The finite element analysis results show that bolt tension is the sum of the tensile force due to moment and the prying force due to the bending deformation of end-plate.The distribution models and calculation formulas of bolt tensions and prying forces for friction type and bearing type high strength bolts are obtained by data fitting of finite element analysis.And the design methods of friction type and bearing type high strength tensile bolts considering the influence of prying force are given finally.
The mechanical behavior of high strength bolts of extended end-plate connections are studied by finite element analysis in the paper,and different finite element models are established considering the influence of different end-plate thicknesses and diameters of bolts.The finite element analysis results show that bolt tension is the sum of the tensile force due to moment and the prying force due to the bending deformation of end-plate.The distribution models and calculation formulas of bolt tensions and prying forces for friction type and bearing type high strength bolts are obtained by data fitting of finite element analysis.And the design methods of friction type and bearing type high strength tensile bolts considering the influence of prying force are given finally.
引文
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[8]王燕,侯兆欣,郑杰.高强螺栓连接考虑杠杆力作用的设计方法[J].建筑钢结构进展,2007,9(2):27-33 Wang Yan,Hou Zhaoxin,Zheng Jie.Design method for high-strength bolt connection considering prying action[J].Progress in Steel Building Structures,2007,9(2):27-33(in Chinese)
[9]吴兆旗,张素梅.撬力对螺栓抗拉连接承载力的影响[J].地震工程与工程振动,2008,28(6):220-225 Wu Zhaoqi,Zhang Sumei.Influence of prying force on tension carrying capacity of bolted connections[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(6):220-225(in Chinese)
[10]刘秀丽,王燕.中美欧高强度螺栓外伸端板连接设计方法比较[J].西安建筑科技大学学报:自然科学版,2012,44(1):41-49 Liu Xiuli,Wang Yan.Study on design methods of extended end-plate connection according to norms of China,America and Europe[J].Journal of Xi′an University of Architecture&Technology:Natural Science Edition,2012,44(1):41-49(in Chinese)
[11]王燕.钢结构半刚性连接设计理论及其工程应用[M].北京:中国建筑工业出版社,2011 Wang Yan.Design theory and engineering application of steel structure semi-rigid connections[M].Beijing:China Architecture&Building Press,2011(in Chinese)
[12]陈绍蕃.钢结构设计原理[M].3版.北京:科学出版社,2005 Chen Shaofan.Principles of steel structure design[M].3rd ed.Beijing:Science Press,2005(in Chinese)
[2]BS5950-1:2000Structural Use of Steelwork in Building,Part2:Joints in Steel Construction Moment Connections[S].The Steel Construction Institute,1999
[3]EN1993-1-8Eurocode3:Design of Steel Structures,Part1.8:Design of Joints[S],2003
[4]Manual of Steel Construction LRFD[S].2nd ed.VolumnⅡ,AISC,2003
[5]JGJ82—2011钢结构高强度螺栓连接技术规程[S].北京:中国计划出版社.2011 JGJ82—2011Technical Specification for High Strength Bolt Connections of Steel Structures[S].Beijing:China Planning Press,2011(in Chinese)
[6]王素芳,陈以一,陈友泉,等.端板连接高强度螺栓群中和轴位置研究[J].建筑科学与工程学报,2005,22(3):45-54Wang Sufang,Chen Yiyi,Chen Youquan,et al.Research on neutral axis location of high-strength bolts of end-plate connections[J].Journal of Architecture and Civil Engineering,2005,22(3):45-54(in Chinese)
[7]贾冬云.钢结构连接中的撬力计算[J].合肥工业大学学报:自然科学版,2005,28(5):514-517 Jia Dongyun.Calculation of the pry action in steel structure connection[J].Journal of Hefei University of Technology:Natural Science Edition,2005,28(5):514-517(in Chinese)
[8]王燕,侯兆欣,郑杰.高强螺栓连接考虑杠杆力作用的设计方法[J].建筑钢结构进展,2007,9(2):27-33 Wang Yan,Hou Zhaoxin,Zheng Jie.Design method for high-strength bolt connection considering prying action[J].Progress in Steel Building Structures,2007,9(2):27-33(in Chinese)
[9]吴兆旗,张素梅.撬力对螺栓抗拉连接承载力的影响[J].地震工程与工程振动,2008,28(6):220-225 Wu Zhaoqi,Zhang Sumei.Influence of prying force on tension carrying capacity of bolted connections[J].Journal of Earthquake Engineering and Engineering Vibration,2008,28(6):220-225(in Chinese)
[10]刘秀丽,王燕.中美欧高强度螺栓外伸端板连接设计方法比较[J].西安建筑科技大学学报:自然科学版,2012,44(1):41-49 Liu Xiuli,Wang Yan.Study on design methods of extended end-plate connection according to norms of China,America and Europe[J].Journal of Xi′an University of Architecture&Technology:Natural Science Edition,2012,44(1):41-49(in Chinese)
[11]王燕.钢结构半刚性连接设计理论及其工程应用[M].北京:中国建筑工业出版社,2011 Wang Yan.Design theory and engineering application of steel structure semi-rigid connections[M].Beijing:China Architecture&Building Press,2011(in Chinese)
[12]陈绍蕃.钢结构设计原理[M].3版.北京:科学出版社,2005 Chen Shaofan.Principles of steel structure design[M].3rd ed.Beijing:Science Press,2005(in Chinese)
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