不同构造形式节点域箱形加强式工字形柱弱轴连接削弱型节点抗震性能分析
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摘要
首先采用ABAQUS有限元软件,结合国内已通过试验验证的节点域箱形加强式工字形柱弱轴连接以及已有的焊接节点试验,验证了有限元模拟的有效性。在通过有限元软件ABAQUS模拟几种不同构造形式的削弱型节点,并与标准型节点在单调荷载作用下的承载力、循环荷载作用下的滞回曲线、骨架曲线、强度与刚度退化曲线、断裂指数等方面进行了对比分析,研究结果表明:节点域箱形加强式工字形柱弱轴连接节点局部削弱可以改善节点的破坏形态,实现塑性铰的外移,防止节点脆性断裂;当采用节点域箱形加强式工字形柱弱轴连接的节点形式,由于弱轴方向本身抗侧刚度较大,同时考虑建筑功能要求、抗震效果及经济性等指标,弱轴方向宜采用削弱型节点,其中腹板开孔型节点承载力及刚度没有过多的下降,且滞回曲线饱满,耗能性能及延性较好。而狗骨削弱型节点存在侧向失稳的问题,因此建议节点域箱形加强式工字形柱弱轴连接削弱型节点应采用腹板开孔型节点。
Firstly,the accuracy of finite element model is verified by quasi-static welding connection tests using the finite element software ABAQUS.Then ABAQUS is used to establish a non-linear finite element model,and load capacity under monotonic loading,hysteretic curve,skeleton curve,strength and stiffness degradation curve,fracture index under cyclic loading are compared and discussed in details.The results show the detail of locally weakened box strengthen-joint region connection of I-section column for weak axis can improve the failure mode of the connections,and realize the moving outward of plastic hinge,and prevent the occurrence of brittle fracture.Considering the building function requirements,seismic effect and economy,and the lateral stiffness of the weak axis direction is larger,so the weak axis direction should adopt the weakened connections,the bearing capacity and stiffness of the weakened connections are not weakened too much and the hysteretic behavior is stable,dissipation capacity and ductility of the weakened connections are better.In addition,the"Dog bone"type connection has the problem of lateral instability,so it is suggested that the connections should adopt web opening connections.
Firstly,the accuracy of finite element model is verified by quasi-static welding connection tests using the finite element software ABAQUS.Then ABAQUS is used to establish a non-linear finite element model,and load capacity under monotonic loading,hysteretic curve,skeleton curve,strength and stiffness degradation curve,fracture index under cyclic loading are compared and discussed in details.The results show the detail of locally weakened box strengthen-joint region connection of I-section column for weak axis can improve the failure mode of the connections,and realize the moving outward of plastic hinge,and prevent the occurrence of brittle fracture.Considering the building function requirements,seismic effect and economy,and the lateral stiffness of the weak axis direction is larger,so the weak axis direction should adopt the weakened connections,the bearing capacity and stiffness of the weakened connections are not weakened too much and the hysteretic behavior is stable,dissipation capacity and ductility of the weakened connections are better.In addition,the"Dog bone"type connection has the problem of lateral instability,so it is suggested that the connections should adopt web opening connections.
引文
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[19]张浩松.扩大翼缘式节点域箱形加强型工字形柱弱轴连接单调荷载试验研究[D].西安:长安大学,2014.ZHANG Haosong.Experimental study on I-section beam-tocolumn connections under the monotonic load with box strengthen-joint region and expanded flange in weak axis[D].Xi’an:Chang’an University,2014.(in Chinese).
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[21]石永久,王萌,王元清,等.钢框架改进型梁柱节点滞回性能有限元分析[J].沈阳建筑大学学报(自然科学版),2010,26(2):205-210.SHI Yongjiu,WANG Meng,WANG Yuanqing,et al.FEManalysis on cyclic behavior of improved beam-column connections in steel frames[J].Journal of Shenyang Jianzhu University(Natural Science),2010,26(2):205-210.(in Chinese)
[22]王秀丽,沈世钊,殷占忠,等.钢框架梁腹板开孔型连接节点力学性能试验研究[J].工程力学,2006,23(6):65-76.WANG Xiuli,SHEN Shizhao,YIN Zhanzhong,et al.Experimental research on mechanical behavior of beamcolumn connections with opening on beam webs in steel frames[J].Engineering Mechanics,2006,23(6):65-76.(in Chinese)
[23]孟庆轩.翼缘开孔削弱型节点抗震性能研究[D].河北:河北工程大学,2017.MENG Qingxuan.Research on seismic behavior of beam-tocolumn joint with beam flange openings[D].Hebei:Hebei University of Engineering,2017.(in Chinese)
[24]刁莉莉.翼缘开孔削弱型梁柱节点受力性能研究[D].西安:西安建筑科技大学,2012.DIAO Lili.Finite element analysis on mechanical behavior of beam-column joint with beam flange openings[D].Xi’an:Xi’an University of Architecture and Technology,2012.(in Chinese)
[25]李成成.RBS型节点域箱形加强式工字形柱弱轴连接边框架节点滞回性能的有限元分析[D].西安:长安大学,2015.LI Chengcheng.Finite element analysis on hysteretic behavior of reduced beam section of box strengthen-joint region connection for weak axis of I-section column[D].Xi’an:Chang’an University,2015.(in Chinese)
[26]王薇.钢框架板式加强型焊接节点的断裂性能分析[D].青岛:青岛理工大学,2011.WANG Wei.Study on fracture behavior of plate welded moment resisting connections in steel frame[D].Qingdao:Qingdao University of Technology,2011.(in Chinese)
[27]Federal Emergency Management Agency.Recommended Seismic Design Criteria For New Steel Moment-Frame Building:FEMA-350[S].Washington,D.C.:Federal Emergency Management Agency,2000.
[28]American Institute of Steel Construction.Seismic Provisions for Structural Steel Buildings[S].Chicago:American Institute of Steel Construction,2005.
[29]石永久,王萌,王元清.钢框架不同构造形式焊接节点抗震性能分析[J].工程力学,2012,29(7):75-83.SHI Yongjiu,WANG Meng,WANG Yuanqing.Analysis on seismic behavior of different structural constructions of welded steel frame connections[J].Engineering Mechanics,2012,29(7):75-83.(in Chinese)
[30]HANCOCK J W,MACKENZIC A C.On the mechanisms of ductile failure in high strength steel subject to multi-axial stress-states[J].Journal of the Mechanics and Physics of Solids,1976,24(2/3):147-160.DOI:10.1016/0022-5096(76)90024-7.
[31]中国建筑科学研究院.建筑抗震试验方法规程:JGJ 101-96[S].北京:中国建筑工业出版社,1997.China Academy of Building Research.Specification of Testing Methods for Earthquake Resistant Building:JGJ 101-96[S].Beijing:China Architecture&Building Press,1997.(in Chinese)
[2]吴兆旗,何田田,姜绍飞,等.钢结构梁柱连接节点抗震性能研究进展[J].福州大学学报(自然科学版),2011,39(5):658-665.DOI:CNKI:35-1117/N.20111014.1025.019.WU Zhaoqi,HE Tiantian,JIANG Shaofei,et al.Research advances in seismic performance of steel beam-to-column connections[J].Journal of Fuzhou University(Natural Science Edition),2011,39(5):658-665.DOI:CNKI:35-1117/N.20111014.1025.019.(in Chinee)
[3]孙利骄.半刚性钢框架弱轴端板连接节点的性能研究[D].广州:华南理工大学,2012.SUN Lijiao.Connection performance research of semi-rigid beam-to-column weak axis end-plate connections in steel frames[D].Guangzhou:South China University of Technology,2012.(in Chinese)
[4]MILLER D K.Lessons learned from the Northridge earthquake[J].Engineering Structures,1998,20(4/5/6):249-260.DOI:10.1016/S0141-0296(97)00031-X.
[5]GROSS J L.A connection model for the seismic analysis of welded steel moment frames[J].Engineering Structures,1998,20(4/5/6):390-397.DOI:10.1016/S0141-0296(97)00090-4.
[6]SONG J L,ELLINGWOOD B R.Seismic reliability of special moment steel frames with welded connection:I[J].Journal of Structural Engineering,1999,125(4):357-371.DOI:10.1061/(ASCE)0733-9445(1999)125:11(1354).
[7]黄南翼,张锡云.日本阪神地震中的钢结构震害[J].钢结构,1995,10(2):118-127.HUANG Nanyi,ZHANG Xiyun.On disaster of structural steel in Great Hanshen Quake in Japan[J].Steel Construction,1995,10(2):118-127.(in Chinese)
[8]彭岩,朱传真.1995年1月17日日本兵库县南部地震概况综述[J].国际地震动态,1995(3):6-13.PENG Yan,ZHU Chuanzhen.On overview of the earthquake occurring in the south of Hyogo Prefecture,Japan[J].Recent Developments in World Seismology,1995(3):6-13.(in Chinese)
[9]崔鸿超.日本兵库县南部地震震害综述[J].建筑结构学报,1996,17(1):2-13,62.DOI:10.14006/j.jzjgxb.1996.01.001.CUI Hongchao.On overview of the earthquake occurring in the south of hyogo prefecture,Japan[J].Journal of Building Structures,1996,17(1):2-13,62.DOI:10.14006/j.jzjgxb.1996.01.001.(in Chinese)
[10]郁有升,孙婷,王燕.梁柱弱轴连接翼缘削弱型节点的滞回性能研究[J].建筑钢结构进展,2013,15(1):15-21.YU Yousheng,SUN Ting,WANG Yan.Analysis on the hysteretic behavior of reduced section beam-to-column connections in minor-axis direction of steel frames[J].Progress in Steel Building Structures,2013,15(1):15-21.(in Chinese)
[11]卢林枫,周天华,李涛.H形梁与H形柱弱轴连接节点及连接方法:CN101555706A[P].2009-10-14.LU Linfeng,ZHOU Tianhua,LI Tao.The connection joint and connection method of H-shaped steel beam and H-shaped column for weak axis:CN101555706A[P].2009-10-14.(in Chinese)
[12]卢林枫,刘子龙,李成成,等.节点域箱形加强式工字形柱弱轴连接钢框架的力学性能和经济性分析[J].建筑科学与工程学报,2015,32(3):52-59.LU Linfeng,LIU Zilong,LI Chengcheng,et al.Steel frame mechanical properties and economical efficiency analysis of box strengthen-joint region connection of I-section column for weak axis[J].Journal of Architecture and Civil Engineering,2015,32(3):52-59.(in Chinese)
[13]中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB50011-2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Code for Seismic Design of Buildings:GB 50011-2010[S].Beijing:China Architecture&Building Press,2010.(in Chinese)
[14]李涛.新型H形梁与H形柱弱轴栓焊混合连接的受力性能研究[D].西安:长安大学,2011.LI Tao.Study on the performance of new H-shaped beam and H-shaped column with bolting and welding mixed connection in weak axis[D].Xi’an:Chang’an University,2011.(in Chinese)
[15]任春娟.H形梁与H形柱弱轴连接节点性能研究[D].西安:长安大学,2012.REN Chunjuan.Research on mechanical performance of new welding connection of H-shaped steel beam and column in weak axis[D].Xi’an:Chang’an University,2012.(in Chinese)
[16]田金.RBS型节点域箱形加强式工字形柱弱轴连接单调荷载试验研究[D].西安:长安大学,2014.TIAN Jin.Experimental research on reduced beam section of box strengthen-joint region connection for weak axis of I-section column[D].Xi’an:Chang’an University,2014.(in Chinese).
[17]马林.梁端加盖板节点域箱形加强式工字形柱弱轴连接单调荷载试验研究[D].西安:长安大学,2014.MA Lin.Experimental research on cover-plate reinforced of box strengthen-joint region connection for weak axis of I-section column under monotonic loading[D].Xi’an:Chang’an University,2014.(in Chinese).
[18]赵琅.梁端加腋型节点域箱形加强式工字形柱弱轴连接单调荷载试验研究[D].西安:长安大学,2014.ZHAO Lang.Experimental research on welded haunch reinforced of box strengthen-joint region connection for weak axis of I-section column under monotonic loading[D].Xi’an:Chang’an University,2014.(in Chinese)
[19]张浩松.扩大翼缘式节点域箱形加强型工字形柱弱轴连接单调荷载试验研究[D].西安:长安大学,2014.ZHANG Haosong.Experimental study on I-section beam-tocolumn connections under the monotonic load with box strengthen-joint region and expanded flange in weak axis[D].Xi’an:Chang’an University,2014.(in Chinese).
[20]杨庆山.梁腹板开圆孔的钢框架抗震节点[J].中国安全科学学报,2005,15(2):40,45-50.DOI:10.16265/j.cnki.issn1003-3033.2005.02.011.YANG Qingshan.Aseismic connection of steel momentresisting frame with opening on beam web[J].China Safety Science Journal,2005,15(2):40,45-50.DOI:10.16265/j.cnki.issn1003-3033.2005.02.011.(in Chinese)
[21]石永久,王萌,王元清,等.钢框架改进型梁柱节点滞回性能有限元分析[J].沈阳建筑大学学报(自然科学版),2010,26(2):205-210.SHI Yongjiu,WANG Meng,WANG Yuanqing,et al.FEManalysis on cyclic behavior of improved beam-column connections in steel frames[J].Journal of Shenyang Jianzhu University(Natural Science),2010,26(2):205-210.(in Chinese)
[22]王秀丽,沈世钊,殷占忠,等.钢框架梁腹板开孔型连接节点力学性能试验研究[J].工程力学,2006,23(6):65-76.WANG Xiuli,SHEN Shizhao,YIN Zhanzhong,et al.Experimental research on mechanical behavior of beamcolumn connections with opening on beam webs in steel frames[J].Engineering Mechanics,2006,23(6):65-76.(in Chinese)
[23]孟庆轩.翼缘开孔削弱型节点抗震性能研究[D].河北:河北工程大学,2017.MENG Qingxuan.Research on seismic behavior of beam-tocolumn joint with beam flange openings[D].Hebei:Hebei University of Engineering,2017.(in Chinese)
[24]刁莉莉.翼缘开孔削弱型梁柱节点受力性能研究[D].西安:西安建筑科技大学,2012.DIAO Lili.Finite element analysis on mechanical behavior of beam-column joint with beam flange openings[D].Xi’an:Xi’an University of Architecture and Technology,2012.(in Chinese)
[25]李成成.RBS型节点域箱形加强式工字形柱弱轴连接边框架节点滞回性能的有限元分析[D].西安:长安大学,2015.LI Chengcheng.Finite element analysis on hysteretic behavior of reduced beam section of box strengthen-joint region connection for weak axis of I-section column[D].Xi’an:Chang’an University,2015.(in Chinese)
[26]王薇.钢框架板式加强型焊接节点的断裂性能分析[D].青岛:青岛理工大学,2011.WANG Wei.Study on fracture behavior of plate welded moment resisting connections in steel frame[D].Qingdao:Qingdao University of Technology,2011.(in Chinese)
[27]Federal Emergency Management Agency.Recommended Seismic Design Criteria For New Steel Moment-Frame Building:FEMA-350[S].Washington,D.C.:Federal Emergency Management Agency,2000.
[28]American Institute of Steel Construction.Seismic Provisions for Structural Steel Buildings[S].Chicago:American Institute of Steel Construction,2005.
[29]石永久,王萌,王元清.钢框架不同构造形式焊接节点抗震性能分析[J].工程力学,2012,29(7):75-83.SHI Yongjiu,WANG Meng,WANG Yuanqing.Analysis on seismic behavior of different structural constructions of welded steel frame connections[J].Engineering Mechanics,2012,29(7):75-83.(in Chinese)
[30]HANCOCK J W,MACKENZIC A C.On the mechanisms of ductile failure in high strength steel subject to multi-axial stress-states[J].Journal of the Mechanics and Physics of Solids,1976,24(2/3):147-160.DOI:10.1016/0022-5096(76)90024-7.
[31]中国建筑科学研究院.建筑抗震试验方法规程:JGJ 101-96[S].北京:中国建筑工业出版社,1997.China Academy of Building Research.Specification of Testing Methods for Earthquake Resistant Building:JGJ 101-96[S].Beijing:China Architecture&Building Press,1997.(in Chinese)