考虑撬力作用位置的T型连接初始刚度计算方法
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摘要
为考虑撬力作用位置对T型连接初始刚度的影响,更准确预测T型连接初始刚度,依据能量驻值原理推导出不考虑和考虑螺栓抗弯刚度时,T型连接撬力作用位置的预测公式,并给出了依据该公式确定普通钢和高强钢T型连接撬力作用位置的具体方法.在此基础上,给出了普通钢和高强钢T型连接初始刚度的计算流程.最后,采用该计算流程对一系列T型连接算例的初始刚度进行计算,并将理论计算和有限元模型计算结果进行对比.研究结果表明,理论与有限元模型计算结果的最大偏差在10%,以内,验证了撬力作用位置预测公式和T型连接初始刚度计算流程的合理性.
In order to consider the influences of locations of prying forces on the initial stiffness of T-stubs and to predict the initial stiffness of T-stubs more accurately,the stationary value principle of energy is used to derive equations either considering bending stiffness of bolts or not,which can be employed to predict the locations of prying forces of mild and high strength steel T-stubs. Further,methods of using the equations to determine the locations of prying forces are presented.Based on the proposed equations and methods,the calculating procedure of initial stiffness of mild and high strength steel T-stubs is given. Finally,the calculating procedure is adopted to get the theoretical values of initial stiffness of a series of Tstubs,and comparisons between theoretical and numerical results of initial stiffness of the T-stubs are presented. Results show that the maximum deviation between the theoretical and numerical results is less than 10%. So the accuracy of the equations and the calculating procedure of initial stiffness of T-stubs presented in this paper are validated.
In order to consider the influences of locations of prying forces on the initial stiffness of T-stubs and to predict the initial stiffness of T-stubs more accurately,the stationary value principle of energy is used to derive equations either considering bending stiffness of bolts or not,which can be employed to predict the locations of prying forces of mild and high strength steel T-stubs. Further,methods of using the equations to determine the locations of prying forces are presented.Based on the proposed equations and methods,the calculating procedure of initial stiffness of mild and high strength steel T-stubs is given. Finally,the calculating procedure is adopted to get the theoretical values of initial stiffness of a series of Tstubs,and comparisons between theoretical and numerical results of initial stiffness of the T-stubs are presented. Results show that the maximum deviation between the theoretical and numerical results is less than 10%. So the accuracy of the equations and the calculating procedure of initial stiffness of T-stubs presented in this paper are validated.
引文
[1]陈颖智,童乐为,陈以一.组件法用于钢结构节点性能分析的研究进展[J].建筑科学与工程学报,2012,29(3):81-89.Chen Yingzhi,Tong Lewei,Chen Yiyi.Research developments of component method for behavior of joints in steel structures[J].Journal of Architecture and Civil Engineering,2012,29(3):81-89(in Chinese).
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[9]李国强,石文龙,王静峰.半刚性连接钢框架结构设计[M].北京:中国建筑工业出版社,2009.Li Guoqiang,Shi Wenlong,Wang Jingfeng.Design of Steel Frames with Semi-Rigid Connections[M].Beijing:China Architecture&Building Press,2009(in Chinese).
[10]王素芳,陈以一.T形件连接初始刚度的理论计算模型[J].工业建筑,2007,37(10):80-83.Wang Sufang,Chen Yiyi.Theoretical model for the initial rotational stiffness of bolted T-stub connections[J].Industrial Construction,2007,37(10):80-83(in Chinese).
[11]Stamatopoulos G N,Ermopoulos J C.Influence of the T-stub flexibility on its strength[J].International Journal of Steel Structures,2010,10(1):73-79.
[12]陈士哲,潘建荣.考虑弯矩作用的T型连接力学性能的研究[J].钢结构,2017,32(9):17-22.Chen Shizhe,Pan Jianrong.Research on mechanical properties of T-stub considering bend moment[J].Steel Construction,2017,32(9):17-22(in Chinese).
[13]武念铎,强旭红,刘晓,等.考虑螺栓抗弯刚度的T型连接初始刚度计算方法研究[J].上海交通大学学报,2018,52(11):1328-1336.Wu Nianduo,Qiang Xuhong,Liu Xiao,et al.Theoretical analysis on initial stiffness of T-stubs involved bending stiffness of bolts[J].Journal of Shanghai Jiaotong University,2018,52(11):1328-1336(in Chinese).
[14]Chasten C P,Lu L W,Driscoll G C.Prying and shear in end-plate connection design[J].Journal of Structural Engineering,1992,118(5):1295-1311.
[15]王燕.钢结构半刚性梁柱节点连接的杠杆力分析与计算[J].工业建筑,2004,34(2):43-46.Wang Yan.Analysis on prying force of semi-rigid beamto-column connections of steel structure[J].Industrial Construction,2004,34(2):43-46(in Chinese).
[16]Sherbourne A N,Bahaari M R.3D simulation of endplate bolted connections[J].Journal of Structural Engineering,1994,120(11):3122-3136.
[17]Bahaari M R,Sherbourne A N.Structural behavior of end-plate bolted connections to stiffened columns[J].Journal of Structural Engineering,1996,122(8):926-935.
[18]Choi C K,Chung G T,Song M K.Refined threedimensional finite element model for end-plate connections[J].Advances in Steel Structures,1996,122(11):365-370.
[19]刘秀丽,王燕.外伸端板连接节点撬力分布研究[J].建筑钢结构进展,2014,16(4):29-38.Liu Xiuli,Wang Yan.Analysis on prying force distribution of extended endplate with bolted connections[J].Progress in Steel Building Structures,2014,16(4):29-38(in Chinese).
[20]European Committee for Standardization.EN 1993-1-8,Eurocode 3-Design of Steel Structures-Part 1-8:Design of Joints[S].CEN,Brussels,2005.
[21]GB50017-2003钢结构设计规范[S].北京:中国计划出版社,2003.GB50017-2003 Code for Design of Steel Structures[S].Beijing:China Planning Press,2003(in Chinese).
[22]陈绍蕃.钢结构设计原理[M].北京:科学出版社,2005:288-290.Chen Shaofan.Principles of Steel Structure Design[M].Beijing:China Science Publishing&Media Ltd,2005:288-290(in Chinese).
[23]Agerskov H.Analysis of bolted connections subject to prying[J].Journal of the Structural Division,1977,103(11):2145-2163.
[2]Coelho A M G,Bijlaard F S K,Gresnigt N,et al.Experimental assessment of the behaviour of bolted T-stub connections made up of welded plates[J].Journal of Constructional Steel Research,2004,60(2):269-311.
[3]Swanson J A,Leon R T.Bolted steel connections:Tests on T-stub components[J].Journal of Structural Engineering,2000,126(1):50-56.
[4]刘秀丽,王燕,李美红.构造参数对钢结构T型连接受力性能影响试验及分析[J].广西大学学报,2017,42(4):1329-1338.Liu Xiuli,Wang Yan,Li Meihong.Experiment and analysis on influence of configuration parameters on mechanical behaviors of steel T-stub connection[J].Journal of Guangxi University,2017,42(4):1329-1338(in Chinese).
[5]施刚,石永久,王元清,等.端板连接高强度螺栓受力特性试验研究[J].东南大学学报,2004,34(3):375-378.Shi Gang,Shi Yongjiu,Wang Yuanqing,et al.Experimental study on bolt resistance for structural steel extended endplate connections[J].Journal of Southeast University,2004,34(3):375-378(in Chinese).
[6]施刚,石永久,王元清,等.不同构造端板连接中高强度螺栓受力特性研究[J].哈尔滨工业大学学报,2005,37(1):66-69.Shi Gang,Shi Yongjiu,Wang Yuanqing,et al.Experimental study on bolt resistance for various structural steel extended endplate connections[J].Journal of Harbin Institute of Technology,2005,37(1):66-69(in Chinese).
[7]刘秀丽,王燕,李关红,等.钢结构T形连接高强度螺栓受力分析及数值模拟[J].建筑科学与工程学报,2016,33(2):63-70.Liu Xiuli,Wang Yan,Li Guanhong,et al.Force analysis and numerical simulation of high strength bolts in T-stub connection of steel structure[J].Journal of Architecture and Civil Engineering,2016,33(2):63-70(in Chinese).
[8]Yee Y L,Melchers R E.Moment-rotation curves for bolted connections[J].Journal of Structural Engineering,1986,112(3):615-635.
[9]李国强,石文龙,王静峰.半刚性连接钢框架结构设计[M].北京:中国建筑工业出版社,2009.Li Guoqiang,Shi Wenlong,Wang Jingfeng.Design of Steel Frames with Semi-Rigid Connections[M].Beijing:China Architecture&Building Press,2009(in Chinese).
[10]王素芳,陈以一.T形件连接初始刚度的理论计算模型[J].工业建筑,2007,37(10):80-83.Wang Sufang,Chen Yiyi.Theoretical model for the initial rotational stiffness of bolted T-stub connections[J].Industrial Construction,2007,37(10):80-83(in Chinese).
[11]Stamatopoulos G N,Ermopoulos J C.Influence of the T-stub flexibility on its strength[J].International Journal of Steel Structures,2010,10(1):73-79.
[12]陈士哲,潘建荣.考虑弯矩作用的T型连接力学性能的研究[J].钢结构,2017,32(9):17-22.Chen Shizhe,Pan Jianrong.Research on mechanical properties of T-stub considering bend moment[J].Steel Construction,2017,32(9):17-22(in Chinese).
[13]武念铎,强旭红,刘晓,等.考虑螺栓抗弯刚度的T型连接初始刚度计算方法研究[J].上海交通大学学报,2018,52(11):1328-1336.Wu Nianduo,Qiang Xuhong,Liu Xiao,et al.Theoretical analysis on initial stiffness of T-stubs involved bending stiffness of bolts[J].Journal of Shanghai Jiaotong University,2018,52(11):1328-1336(in Chinese).
[14]Chasten C P,Lu L W,Driscoll G C.Prying and shear in end-plate connection design[J].Journal of Structural Engineering,1992,118(5):1295-1311.
[15]王燕.钢结构半刚性梁柱节点连接的杠杆力分析与计算[J].工业建筑,2004,34(2):43-46.Wang Yan.Analysis on prying force of semi-rigid beamto-column connections of steel structure[J].Industrial Construction,2004,34(2):43-46(in Chinese).
[16]Sherbourne A N,Bahaari M R.3D simulation of endplate bolted connections[J].Journal of Structural Engineering,1994,120(11):3122-3136.
[17]Bahaari M R,Sherbourne A N.Structural behavior of end-plate bolted connections to stiffened columns[J].Journal of Structural Engineering,1996,122(8):926-935.
[18]Choi C K,Chung G T,Song M K.Refined threedimensional finite element model for end-plate connections[J].Advances in Steel Structures,1996,122(11):365-370.
[19]刘秀丽,王燕.外伸端板连接节点撬力分布研究[J].建筑钢结构进展,2014,16(4):29-38.Liu Xiuli,Wang Yan.Analysis on prying force distribution of extended endplate with bolted connections[J].Progress in Steel Building Structures,2014,16(4):29-38(in Chinese).
[20]European Committee for Standardization.EN 1993-1-8,Eurocode 3-Design of Steel Structures-Part 1-8:Design of Joints[S].CEN,Brussels,2005.
[21]GB50017-2003钢结构设计规范[S].北京:中国计划出版社,2003.GB50017-2003 Code for Design of Steel Structures[S].Beijing:China Planning Press,2003(in Chinese).
[22]陈绍蕃.钢结构设计原理[M].北京:科学出版社,2005:288-290.Chen Shaofan.Principles of Steel Structure Design[M].Beijing:China Science Publishing&Media Ltd,2005:288-290(in Chinese).
[23]Agerskov H.Analysis of bolted connections subject to prying[J].Journal of the Structural Division,1977,103(11):2145-2163.