节点域尺寸对H型钢截面局部钢框架水平位移影响的研究
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摘要
为了研究钢框架总水平位移与柱、梁、节点域变形之间的规律,以节点域高宽比、节点域宽度与层高比、柱与梁刚度比及结构跨高比等为主要研究参数,建立包括柱、梁、节点域的H型钢截面局部钢框架模型,并采用弹性分析方法进行研究。结果表明:节点域宽度与层高比相同、节点域高宽比增大时,梁水平位移比增大、节点域水平位移比减小、柱水平位移比变化不明显;结构跨高比增大时,节点域水平位移比增大,而梁水平位移量减小;节点域剪切变形引起的水平位移占模型总水平位移的30%左右;节点域宽度与层高比为0.1时,模型总水平位移比大于1,按现行不考虑节点域变形影响的基于位移抗震设计法计算时可能导致过小评价结构水平位移。
To study the rules between steel frame total horizontal displacement and the ones that come from the columns,beams and panel zones,the cross-shaped H-sectional local steel frame model consisting of column,beam and panel zone is set as the analysis model,and the main parameters such as panel zone's height-width ration,panel zone 's width to story height ration,the column-beam stiffness ration,structural span-height ration are borrowed for the research by the means of the elastic analysis method. The results show that: with the panel zone's height-width ration increasing,the beam horizontal displacement increases,and the panel zone 's horizontal displacement decreases,but the column horizontal displacement ratio has no significant change under the same panel zone 's width to story height ration; with the structural span-height ration increasing,the panel zone horizontal displacement ration increases,and the beam horizontal displacement decreases; the displacement ration caused by panel zone's shear deformation is about 30% of the total model horizontal displacement; as the panel zone's width to story height ration is 0. 1,the model total horizontal displacement is greater than 1,and the evaluated structural horizontal displacement may be smaller than the actual one according to the current displacement seismic design method without considering the affection of the panel zone's deformation.
To study the rules between steel frame total horizontal displacement and the ones that come from the columns,beams and panel zones,the cross-shaped H-sectional local steel frame model consisting of column,beam and panel zone is set as the analysis model,and the main parameters such as panel zone's height-width ration,panel zone 's width to story height ration,the column-beam stiffness ration,structural span-height ration are borrowed for the research by the means of the elastic analysis method. The results show that: with the panel zone's height-width ration increasing,the beam horizontal displacement increases,and the panel zone 's horizontal displacement decreases,but the column horizontal displacement ratio has no significant change under the same panel zone 's width to story height ration; with the structural span-height ration increasing,the panel zone horizontal displacement ration increases,and the beam horizontal displacement decreases; the displacement ration caused by panel zone's shear deformation is about 30% of the total model horizontal displacement; as the panel zone's width to story height ration is 0. 1,the model total horizontal displacement is greater than 1,and the evaluated structural horizontal displacement may be smaller than the actual one according to the current displacement seismic design method without considering the affection of the panel zone's deformation.
引文
[1]陈炯.钢框架节点域的宽厚比限值和基于宽厚比的抗剪承载力验算[J].建筑钢结构进展,2012,14(4):11-17Chen Jiong.Limiting width-thickness ratio and shear resistance verification for panel zones of steel moment frames[J].Progress in Steel Building Structures,2012,14(4):11-17
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[10]邹雪,包恩和,车青海.不同类型截面柱组合多层钢框架优化设计分析[J].广西大学学报(自然科学版),2014,39(4):778-787Zou Xue,Bao Enhe,Che Qinghai.Optimum design of multilayersteel frames combined with different cross section columns[J].Journal of Guangxi University(Nat Sci Ed),2014,39(4):778-787(in Chinese)
[11]陈宜虎,赵艳林,包恩和,等.多层屈曲约束斜撑钢框架抗震性能研究[J].同济大学学报(自然科学版),2016,44(4):512-519Chen Yihu,Zhao Yanlin,Bao Enhe,et al.Seismic research on multi-story buckling restrained braced steel frame[J].Journal of Tong Ji University(Natural Science),2016,44(4):512-519(in Chinese)
[12]陈宜虎,赵艳林,包恩和,等.高β值的多层屈曲约束支撑钢框架结构设计层剪力分布研究[J].建筑钢结构进展,2015,(3):39-46Chen Yihu,Zhao Yanlin,Bao Enhe,et al.Research on interstory shear distribution of multi-story buckling restrained braced frame structures with Highβvalues[J].Progress in Steel Building Structures,2015,(3):39-46(in Chinese)
[13]包恩和,陈宜虎.多层屈曲约束支撑钢框架抗震性能研究[J].结构工程师,2013,29(6):98-105Bao Enhe,Chen Yihu.Seismic response of multi-layer buckling restrained braced steel frame[J].Structural Engineers,2013,29(6):98-105(in Chinese)
[2]陈以一,王伟,赵宪忠.钢结构体系中节点耗能能力研究进展与关键技术[J].建筑结构学报,2010,31(6):81-88Chen Yiyi,Wang Wei,Zhao Xianzhong.Development and key technical issues on energy dissipation capacity of joints in steel structures[J].Journal of Building Structures,2010,31(6):81-88
[3]European Committee for Standardization.Design of Steel Structures[S].EN 1993.(EC3),2005
[4]鋼構造接合部設計指針[S].日本建築学会,2006,14-16Recommendation for Design of Connections in Steel Structures[S].Architectural Institute of Japan,2006,14-16(in Japanese)
[5]潘伶俐,陈以一.考虑竖向加劲肋作用的H形梁柱节点试验研究[J].建筑结构学报,2012,33(12):1-9Pan Lingli,Chen Yiyi.Experimental study on H-shaped beamto-column connections with vertical stiffener[J].Journal of Building Structures,2012,33(12):1-9(in Chinese)
[6]潘伶俐,陈以一,焦伟丰,等.空间H形梁柱节点的节点域滞回性能试验研究[J].建筑结构学报,2015,36(10):11-19Pan Lingli,Chen Yiyi,Jiao Weifeng,et al.Experimental study on panel zone in spatial H-shaped beam-column connections under cyclic loading[J].Journal of Building Structures,2015,36(10):11-19(in Chinese)
[7]難波尚;田渕基嗣;田中剛.弱軸H型断面柱梁接合部パネルの耐力評価[A].鋼構造年次論文報告集[C].2004,12(11):253-260Hisashi NAMBA,Mototsugu TABUCHI,Tauyoshi TANAKA.Evaluation for the strength of Joint panels on weak axis H shaped column to beam connections[A].Journal of Constructional Steel[C].2004,12(11):253-260(in Japanese)
[8]贾连光,白宏涛,史永斌,等.建立考虑节点域剪切变形的平面钢框架单元刚度矩阵[J].沈阳建筑大学学报(自然科学版),2007,23(1):11-15Jia Lianguang,Bai Hongtao,Shi Yongbin,et al.Stiffness matrix of member of plane steel frame with shear deformation of join-t panels taken into account[J].Journal of Shenyang Jianzhu University(Natural Science),2007,23(1):11-15(in Chinese)
[9]韩明岚,王燕,董建莉.梁翼缘削弱式钢框架考虑节点域剪切变形的力学性能研究[J].建筑钢结构进展,2013,15(1):22-28Han Minglan,Wang Yan,Dong Jianli.Study on mechanical behavior of steel frames with reduced beam flanges considering shear deformation of panel zones[J].Progress in Steel Building Structures,2013,15(1):22-28(in Chinese)
[10]邹雪,包恩和,车青海.不同类型截面柱组合多层钢框架优化设计分析[J].广西大学学报(自然科学版),2014,39(4):778-787Zou Xue,Bao Enhe,Che Qinghai.Optimum design of multilayersteel frames combined with different cross section columns[J].Journal of Guangxi University(Nat Sci Ed),2014,39(4):778-787(in Chinese)
[11]陈宜虎,赵艳林,包恩和,等.多层屈曲约束斜撑钢框架抗震性能研究[J].同济大学学报(自然科学版),2016,44(4):512-519Chen Yihu,Zhao Yanlin,Bao Enhe,et al.Seismic research on multi-story buckling restrained braced steel frame[J].Journal of Tong Ji University(Natural Science),2016,44(4):512-519(in Chinese)
[12]陈宜虎,赵艳林,包恩和,等.高β值的多层屈曲约束支撑钢框架结构设计层剪力分布研究[J].建筑钢结构进展,2015,(3):39-46Chen Yihu,Zhao Yanlin,Bao Enhe,et al.Research on interstory shear distribution of multi-story buckling restrained braced frame structures with Highβvalues[J].Progress in Steel Building Structures,2015,(3):39-46(in Chinese)
[13]包恩和,陈宜虎.多层屈曲约束支撑钢框架抗震性能研究[J].结构工程师,2013,29(6):98-105Bao Enhe,Chen Yihu.Seismic response of multi-layer buckling restrained braced steel frame[J].Structural Engineers,2013,29(6):98-105(in Chinese)