基于组件法的超大承载力端板连接节点弯矩-转角曲线计算方法
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摘要
超大承载力端板连接节点是一种可以应用于大跨或重载钢结构中的新型梁柱节点形式。为了在结构分析中准确考虑该节点的抗弯承载力和转动刚度,需要确定其弯矩-转角曲线。在已有试验和有限元分析结果的基础上提出了超大承载力端板连接节点的组件模型,引入一种新组件形式并提出了其承载力和刚度的分析方法,基于组件法提出了超大承载力端板连接节点的抗弯承载力和转动刚度的计算方法。综合现有典型的节点弯矩-转角曲线模型的优点,以节点抗弯承载力和转动刚度为基本参数提出了适用于超大承载力端板连接节点的弯矩-转角曲线模型。通过与已开展的试验研究和有限元分析结果进行比较,所提方法得到的节点抗弯承载力和转动刚度较为准确,所提弯矩-转角曲线模型与试验曲线吻合良好,可以应用于采用该节点形式结构的分析和设计中。
The ultra-large capacity end-plate connection is a new beam-to-column connection type that can be applied in steel structures with large spans or heavy loads. To consider the resistance and rotational stiffness of this connection type accurately in structural analysis, it is necessary to determine the moment-rotation curves of the connections. A component model of ultra-large capacity end-plate connections was proposed based on the existing experimental results and finite element analysis results, and a new component form was introduced with the methods to analyze its resistance and stiffness presented. Also, methods to calculate the moment resistance and the rotational stiffness of ultra-large capacity end-plate connections were proposed based on component method. Combining the advantages of the existing typical moment-rotation models, a moment-rotation model, taking the moment resistance and the rotational stiffness as basic parameters, was proposed for this connectionform. The results of the proposed methods were compared with the results of the existing experiments and finite element analysis, demonstrating that the proposed method can predict the moment resistance and the rotational stiffness with a satisfactory accuracy while the moment-rotation curves obtained by the proposed model show good agreements with the experimental curves.
The ultra-large capacity end-plate connection is a new beam-to-column connection type that can be applied in steel structures with large spans or heavy loads. To consider the resistance and rotational stiffness of this connection type accurately in structural analysis, it is necessary to determine the moment-rotation curves of the connections. A component model of ultra-large capacity end-plate connections was proposed based on the existing experimental results and finite element analysis results, and a new component form was introduced with the methods to analyze its resistance and stiffness presented. Also, methods to calculate the moment resistance and the rotational stiffness of ultra-large capacity end-plate connections were proposed based on component method. Combining the advantages of the existing typical moment-rotation models, a moment-rotation model, taking the moment resistance and the rotational stiffness as basic parameters, was proposed for this connectionform. The results of the proposed methods were compared with the results of the existing experiments and finite element analysis, demonstrating that the proposed method can predict the moment resistance and the rotational stiffness with a satisfactory accuracy while the moment-rotation curves obtained by the proposed model show good agreements with the experimental curves.
引文
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[15]Chen X,Shi G.Finite element analysis and moment resistance of ultra-large capacity end-plate joints[J].Journal of Constructional Steel Research,2016,126:153―162.
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[21]施刚,石永久,王元清,等.钢结构半刚性端板连接的设计方法与应用[J].工业建筑,2003,33(8):52―55.Shi Gang,Shi Yongjiu,Wang Yuanqing,et al.Design method and application of structural steel semirigid end-plate connections[J].Industrial Construction,2003,33(8):52―55.(in Chinese)
[22]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)
[23]童根树,赵伟,杨强跃.外伸端板加劲肋设计及初始转动刚度模型[J].哈尔滨工业大学学报,2008,40(12):2035―2038.Tong Genshu,Zhao Wei,Yang Qiangyue.Design of end-plate stiffener and a model of initial stiffness in extended end plate connection[J].Journal of Harbin Institute of Technology,2008,40(12):2035―2038.(in Chinese)
[24]GB50017-2003,钢结构设计规范[S].2003.GB50017-2003,Code for design of steel structures[S].2003.(in Chinese)
[25]ANSI/AISC 360-10,Specification for Structural Steel Buildings[S].2010.
[26]Massimo L,Gianvittorio R,Aldina S,et al.Experimental analysis and mechanical modeling of T-stubs with four bolts per row[J].Journal of Constructional Steel Research,2014,101:158―174.
[27]龙驭球,包世华.结构力学I[M].北京:高等教育出版社,2006:165―173.Long Yuqiu,Bao Shihua.Structural mechanics I[M].Beijing:High Education Press,2006:165―173.(in Chinese)
[28]Ang K M,Morris G A.Analysis of three-dimensional frames with flexible beam-column connections[J].Canadian Journal of Civil Engineering,1984,11(2):245―254.
[29]Colson A.Theoretical modeling of semirigid connections behavior[J].Journal of Constructional Steel Research,1991,19(3):213―224.
[2]胡方鑫,施刚,石永久,等.工厂加工制作的特殊构造梁柱节点抗震性能有限元分析[J].工程力学,2015,32(6):69―75.Hu Fangxin,Shi Gang,Shi Yongjiu,et al.Finite element analysis on seismic performance of specifically pre-fabricated beam-column connections[J].Engineering Mechanics,2015,32(6):69―75.(in Chinese)
[3]石永久,王萌,王元清,等.钢框架端板连接半刚性节点受力性能分析[J].工程力学,2011,28(9):51―58.Shi Yongjiu,Wang Meng,Wang Yuanqing,et al.Analysis on the behavior of steel frame end-plate connections[J].Engineering Mechanics,2011,28(9):51―58.(in Chinese)
[4]施刚,石永久,李少甫,等.多层钢框架半刚性端板连接的循环荷载试验研究[J].建筑结构学报,2005,26(2):74―80,93.Shi Gang,Shi Yongjiu,Li Shaofu,et al.Cyclic tests of semirigid end-plate connections in multi-story steel frames[J].Journal of Building Structures,2005,26(2):74―80,93.(in Chinese)
[5]Coelho A M G,Bijlaard F S K,da Silva L S.Experimental assessment of the ductility of extended end plate connections[J].Engineering Structures,2004,26(9):1185―1206.
[6]Aggarwal A K.Behaviour of flexible end plate beam-to-column joints[J].Journal of Constructional Steel Research,1990,16(2):111―134.
[7]Grimsmo E L,Clausen A H,Langseth M,et al.An experimental study of static and dynamic behaviour of bolted end-plate joints of steel[J].International Journal of Impact Engineering,2015,85:132―145.
[8]JGJ82-2011,钢结构高强度螺栓连接技术规程[S].2011.JGJ82-2011,Technical specification for high strength bolt connections of Steel Structure[S].2011.(in Chinese)
[9]BS EN 1993-1-8:2005,Eurocode 3:Design of steel structures,Part 1―8:Design of joints[S].2005.
[10]ANSI/AISC 358-10,Prequalified connections for special and intermediate steel moment frames for seismic applications[S].2010.
[11]范浩.特殊构造端板连接节点受力性能和设计方法研究[D].北京:清华大学,2012.Fan Hao.Mechanical behavior and design method of end-plate connections with special configuration[D].Beijing:Tsinghua University,2012.(in Chinese)
[12]Kukreti A R,Ghassemieh M,Murray T M.Behavior and design of large-capacity moment end plates[J].Journal of Structural Engineering,1990,116(3):809―828.
[13]Bahaari M R,Sherbourne A N.Behavior of eight-bolt large capacity endplate connections[J].Computers&Structures,2000,77(3):315―325.
[14]Shi G,Chen X,Wang D.Experimental study of ultra-large capacity end-plate joints[J].Journal of Constructional Steel Research,2017,128:354―361.
[15]Chen X,Shi G.Finite element analysis and moment resistance of ultra-large capacity end-plate joints[J].Journal of Constructional Steel Research,2016,126:153―162.
[16]Faella C,Piluso V,Rizzano G.Structural steel semirigid connections:theory,design and software[M].Boca Raton,Florida:CRC Press LLC,2000:38―56.
[17]施刚,袁锋,霍达,等.钢框架梁柱节点转角理论模型和测量计算方法[J].工程力学,2012,29(2):52―60.Shi Gang,Yuan Feng,Huo Da,et al.The theoretical model and measuring calculation method of the beam-to-column joint rotation in steel frames[J].Engineering Mechanics,2012,29(2):52―60.(in Chinese)
[18]石永久,施刚,王元清.钢结构半刚性端板连接弯矩-转角曲线简化计算方法[J].土木工程学报,2006,39(3):19―23.Shi Yongjiu,Shi Gang,Wang Yuanqing.A simplified calculation method for moment-rotation curve of semi-rigid end-plate connections[J].China Civil Engineering Journal,2006,39(3):19―23.(in Chinese)
[19]王素芳,陈以一.梁柱端板连接节点的初始刚度计算[J].工程力学,2008,25(8):109―115.Wang Sufang,Chen Yiyi.Calculation of initial stiffness of beam-to-column end-plate joint[J].Engineering Mechanics,2008,25(8):109―115.(in Chinese)
[20]施刚,石永久,王元清.钢结构梁柱半刚性端板连接弯矩-转角全曲线计算方法[J].工程力学,2006,23(5):67―73.Shi Gang,Shi Yongjiu,Wang Yuanqing.Calculation method on moment-rotation curves of beam-to-column semirigid end-plate connections[J].Engineering Mechanics,2006,23(5):67―73.(in Chinese)
[21]施刚,石永久,王元清,等.钢结构半刚性端板连接的设计方法与应用[J].工业建筑,2003,33(8):52―55.Shi Gang,Shi Yongjiu,Wang Yuanqing,et al.Design method and application of structural steel semirigid end-plate connections[J].Industrial Construction,2003,33(8):52―55.(in Chinese)
[22]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)
[23]童根树,赵伟,杨强跃.外伸端板加劲肋设计及初始转动刚度模型[J].哈尔滨工业大学学报,2008,40(12):2035―2038.Tong Genshu,Zhao Wei,Yang Qiangyue.Design of end-plate stiffener and a model of initial stiffness in extended end plate connection[J].Journal of Harbin Institute of Technology,2008,40(12):2035―2038.(in Chinese)
[24]GB50017-2003,钢结构设计规范[S].2003.GB50017-2003,Code for design of steel structures[S].2003.(in Chinese)
[25]ANSI/AISC 360-10,Specification for Structural Steel Buildings[S].2010.
[26]Massimo L,Gianvittorio R,Aldina S,et al.Experimental analysis and mechanical modeling of T-stubs with four bolts per row[J].Journal of Constructional Steel Research,2014,101:158―174.
[27]龙驭球,包世华.结构力学I[M].北京:高等教育出版社,2006:165―173.Long Yuqiu,Bao Shihua.Structural mechanics I[M].Beijing:High Education Press,2006:165―173.(in Chinese)
[28]Ang K M,Morris G A.Analysis of three-dimensional frames with flexible beam-column connections[J].Canadian Journal of Civil Engineering,1984,11(2):245―254.
[29]Colson A.Theoretical modeling of semirigid connections behavior[J].Journal of Constructional Steel Research,1991,19(3):213―224.