钢框架梁柱节点转角理论模型和测量计算方法
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摘要
梁柱节点转角对钢框架的内力和变形及其梁与柱构件的设计有着重要的影响。由于研究环境和研究方法的差异,国内外研究者大多采用自己定义的节点转角和测量计算方法,其测量得到的节点转角中大多包括梁与柱变形的影响,使已取得的大量研究成果在其适用性和可比性上存在较大的不足。该文比较分析了目前国内外学者提出的钢框架梁柱节点转角定义和测量计算方法,对全焊接节点及栓焊混接节点提出了改进的节点转角测量计算方法,并验证其精确性和可行性;随后采用较为合适的节点简化理论模型,结合节点转角测量计算方法进行整体分析,讨论其准确性。有限元分析结果显示该文建议的3种节点转角测量计算方法具有很高的精度,而选取节点域斜向弹簧模型进行整体框架的简化分析时,不仅可以考虑节点转动的影响,而且其分析计算结果具有很高的精确性。
The beam-to-column joint rotation influences the internal force and deformation of steel frames,thus influences the design of the beam and column members.Because of the differences in research conditions and research methods,many researchers use their own definitions and methods for the calculation of beam-to-column joint rotation in steel frames,which results in some unknown errors due to the introduction of the beam and column deformation,as a result,some achieved research results can not be referred.This paper compares and analyzes some definitions and measuring calculation methods for beam-to-column joint rotation in steel frames currently used in China and other countries,proposes the improved measuring calculation method for welded joint rotation and welded-flange-bolted-web joint rotation,and verifies its accuracy and feasibility;then combines the measuring calculation method of joint rotation and uses the suitable joint simplified theoretical model to carry out the global analysis,and discusses its accuracy.The results of the finite element analysis show that the three proposed measuring calculation methods of joint rotation have high precision,and the simplified model of the global frame,which incorporates the panel zone diagonal spring,not only considers the influence of joint rotation,but also has high accuracy.
The beam-to-column joint rotation influences the internal force and deformation of steel frames,thus influences the design of the beam and column members.Because of the differences in research conditions and research methods,many researchers use their own definitions and methods for the calculation of beam-to-column joint rotation in steel frames,which results in some unknown errors due to the introduction of the beam and column deformation,as a result,some achieved research results can not be referred.This paper compares and analyzes some definitions and measuring calculation methods for beam-to-column joint rotation in steel frames currently used in China and other countries,proposes the improved measuring calculation method for welded joint rotation and welded-flange-bolted-web joint rotation,and verifies its accuracy and feasibility;then combines the measuring calculation method of joint rotation and uses the suitable joint simplified theoretical model to carry out the global analysis,and discusses its accuracy.The results of the finite element analysis show that the three proposed measuring calculation methods of joint rotation have high precision,and the simplified model of the global frame,which incorporates the panel zone diagonal spring,not only considers the influence of joint rotation,but also has high accuracy.
引文
[1]施刚,石永久,王元清,李少甫,陈宏.多层钢框架半刚性端板连接的试验研究[J].清华大学学报(自然科学版),2004,44(3):391―394.Shi Gang,Shi Yongjiu,Wang Yuanqing,Li Shaofu,Chen Hong.Experimental study on semirigid end-plateconnections in multi-story steel frames[J].Journal ofTsinghua University(Science&Technology),2004,44(3):391―394.(in Chinese)
[2]陈惠发.钢框架稳定设计[M].周绥平,译.上海:世界图书出版公司,1999:264―418.Chen W F.Stability design of steel frames[M].Translated by Zhou Suiping.Shanghai:World PublishingCo.Ltd,1999:264―418.(in Chinese)
[3]施刚,石永久,王元清,李少甫,陈宏.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,Li Shaofu,Chen Hong.Design methods and application of structuralsteel semirigid end-plate connections[J].IndustrialConstruction,2003,33(8):52―55.(in Chinese)
[4]CEN:ENV1993-1-8,Eurocode 3:Design of SteelStructures:Part 1.8 Design of joint[S].2005.
[5]Faella C,Piluso V,Rizzano G.Structural steel semirigidconnections[M].CRC Press LLC,Boca Raton,Florida,2000.
[6]石永久,杨文,王元清.梁柱刚接节点负载下加固的有限元研究[J].四川建筑科学研究,2008,34(4):79―82.Shi Yongjiu,Yang Wen,Wang Yuanqing.Finite elementanalysis on retrofitting steel moment connection withinitial loads[J].Sichuan Building Science,2008,34(4):79―82.(in Chinese)
[7]王浩,李志刚,郝际平.节点域性能的研究[J].钢结构,2005,20(1):68―70.Wang Hao,Li Zhigang,Hao Jiping.Research onperformance of panel zone[J].Steel Construction,2005,20(1):68―70.(in Chinese)
[8]李成玉,郭耀杰,李美东.钢框架节点刚度测试方法研究[J].工业建筑,2005,35(5):98―100.Li Chengyu,Guo Yaojie,Li Meidong.Research on testmethod for joint stiffness of steel frameworks[J].Industrial Consteuction,2005,35(5):98―100.(inChinese)
[9]赵大伟,石永久,陈宏.低周往复荷载下梁柱节点的试验研究[J].建筑结构,2000,30(9):3―6.Zhao Dawei,Shi Yongjiu,Chen Hong.Experimentalresearch on beam-column connections under cyclicloading[J].Building Structure,2000,30(9):3―6.(inChinese)
[10]石永久,李兆凡,陈宏,王元清.高层钢框架新型梁柱节点抗震性能试验研究[J].建筑结构学报,2002,23(3):2―7.Shi Yongjiu,Li Zhaofan,Chen Hong,Wang Yuanqing.Experimental research on cyclic behavior of new types ofbeam-column connections in highrise steel frames[J].Journal of Building Structures,2002,23(3):2―7.(inChinese)
[11]Coelho A M G,Bijlaard F S K.Experimental behaviourof high strength steel end-plate connections[J].Journalof Constructional Steel Research,2007,63(9):1228―1240.
[12]袁继雄,王湛,周斌,陈立强.钢框架梁柱节点转角测试技术现状研究[J].建筑结构学报,2009,30(1):1―6.Yuan Jixiong,Wang Zhan,Zhou Bin,Chen Liqiang.Investigation of experimental methods used in measuringsteel beam-to-column joint rotation[J].Journal ofBuilding Structures,2009,30(1):1―6.(in Chinese)
[13]Castro J M,Elghazouli A Y,Izzuddin B A.Modelling ofthe panel zone in steel and composite moment frames[J].Engineering Structures,2005,27(1):129―144.
[14]Krawinkler H,Bertero V V,Popov E P.Inelasticbehaviour of steel beam-to-column subassemblages[R].Report No.EERC 71-07,University of CaliforniaBerkeley,Berkeley,California,1971.
[15]Dan D,Cituina A,Stratan A.Cyclic tests of double-sidedbeam-to-column joints[J].Journal of StructuralEngineering,2001,127(2):129―136.
[16]王珊,高艳山,张惠明.钢框架节点板域性能的试验研究[J].北方工业大学学报,1993,5(3):80―91.Wang Shan,Gao Yanshan,Zhang Huiming.Experimental study on panel zone of steel frame joint[J].Journal of North China University of Technology,1993,5(3):80―91.(in Chinese)
[17]李国强,沈祖炎.考虑节点区剪切变形的钢框架弹塑性地震反应分析[J].同济大学学报,1990,18(1):1―9.Li Guoqiang,Shen Zuyan.Analysis of elasto-plasticseismic response of steel frames with panel sheardeformation[J].Journal of Tongji University,1990,18(1):1―9.(in Chinese)
[2]陈惠发.钢框架稳定设计[M].周绥平,译.上海:世界图书出版公司,1999:264―418.Chen W F.Stability design of steel frames[M].Translated by Zhou Suiping.Shanghai:World PublishingCo.Ltd,1999:264―418.(in Chinese)
[3]施刚,石永久,王元清,李少甫,陈宏.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,Li Shaofu,Chen Hong.Design methods and application of structuralsteel semirigid end-plate connections[J].IndustrialConstruction,2003,33(8):52―55.(in Chinese)
[4]CEN:ENV1993-1-8,Eurocode 3:Design of SteelStructures:Part 1.8 Design of joint[S].2005.
[5]Faella C,Piluso V,Rizzano G.Structural steel semirigidconnections[M].CRC Press LLC,Boca Raton,Florida,2000.
[6]石永久,杨文,王元清.梁柱刚接节点负载下加固的有限元研究[J].四川建筑科学研究,2008,34(4):79―82.Shi Yongjiu,Yang Wen,Wang Yuanqing.Finite elementanalysis on retrofitting steel moment connection withinitial loads[J].Sichuan Building Science,2008,34(4):79―82.(in Chinese)
[7]王浩,李志刚,郝际平.节点域性能的研究[J].钢结构,2005,20(1):68―70.Wang Hao,Li Zhigang,Hao Jiping.Research onperformance of panel zone[J].Steel Construction,2005,20(1):68―70.(in Chinese)
[8]李成玉,郭耀杰,李美东.钢框架节点刚度测试方法研究[J].工业建筑,2005,35(5):98―100.Li Chengyu,Guo Yaojie,Li Meidong.Research on testmethod for joint stiffness of steel frameworks[J].Industrial Consteuction,2005,35(5):98―100.(inChinese)
[9]赵大伟,石永久,陈宏.低周往复荷载下梁柱节点的试验研究[J].建筑结构,2000,30(9):3―6.Zhao Dawei,Shi Yongjiu,Chen Hong.Experimentalresearch on beam-column connections under cyclicloading[J].Building Structure,2000,30(9):3―6.(inChinese)
[10]石永久,李兆凡,陈宏,王元清.高层钢框架新型梁柱节点抗震性能试验研究[J].建筑结构学报,2002,23(3):2―7.Shi Yongjiu,Li Zhaofan,Chen Hong,Wang Yuanqing.Experimental research on cyclic behavior of new types ofbeam-column connections in highrise steel frames[J].Journal of Building Structures,2002,23(3):2―7.(inChinese)
[11]Coelho A M G,Bijlaard F S K.Experimental behaviourof high strength steel end-plate connections[J].Journalof Constructional Steel Research,2007,63(9):1228―1240.
[12]袁继雄,王湛,周斌,陈立强.钢框架梁柱节点转角测试技术现状研究[J].建筑结构学报,2009,30(1):1―6.Yuan Jixiong,Wang Zhan,Zhou Bin,Chen Liqiang.Investigation of experimental methods used in measuringsteel beam-to-column joint rotation[J].Journal ofBuilding Structures,2009,30(1):1―6.(in Chinese)
[13]Castro J M,Elghazouli A Y,Izzuddin B A.Modelling ofthe panel zone in steel and composite moment frames[J].Engineering Structures,2005,27(1):129―144.
[14]Krawinkler H,Bertero V V,Popov E P.Inelasticbehaviour of steel beam-to-column subassemblages[R].Report No.EERC 71-07,University of CaliforniaBerkeley,Berkeley,California,1971.
[15]Dan D,Cituina A,Stratan A.Cyclic tests of double-sidedbeam-to-column joints[J].Journal of StructuralEngineering,2001,127(2):129―136.
[16]王珊,高艳山,张惠明.钢框架节点板域性能的试验研究[J].北方工业大学学报,1993,5(3):80―91.Wang Shan,Gao Yanshan,Zhang Huiming.Experimental study on panel zone of steel frame joint[J].Journal of North China University of Technology,1993,5(3):80―91.(in Chinese)
[17]李国强,沈祖炎.考虑节点区剪切变形的钢框架弹塑性地震反应分析[J].同济大学学报,1990,18(1):1―9.Li Guoqiang,Shen Zuyan.Analysis of elasto-plasticseismic response of steel frames with panel sheardeformation[J].Journal of Tongji University,1990,18(1):1―9.(in Chinese)
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