方钢管混凝土柱外环肋节点及其改进型破坏模式研究
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摘要
通过对方钢管混凝土柱-钢梁外环肋节点的拟静力试验研究和数值分析,探讨了节点的变形特征和破坏模式,指出外环肋节点虽然可满足抗震设计的要求,但存在节点承载力偏小、节点焊缝应力集中等缺陷。借鉴圆钢管混凝土结构中的内锚构造,提出改进型外环肋节点,即在钢管混凝土柱内壁增设"T"型或"L"型内锚。通过对改进型外环肋节点单调加载理论分析,研究了节点各组件受力情况和节点的荷载-位移曲线,指出改进型节点的内锚增强了混凝土的约束效应,显著提高了节点的承载力。
The deformation behavior and the failure mode of steel beam to concrete-filled square steel tube column connections with outer stiffening ring were discussed through quasi-static tests and numerical analysis.It is concluded that though it can meet requirements of seismic design,the connection has disadvantages of low bearing capacity and stress concentration at welds.However,the connection can be improved by adding"T"or"L"anchors inside the square steel column like details in concrete-filled circular steel tube column.According to the analysis of monotonic loading process which contains stress and P-Δcurves of connections,the improved connection shows higher capacity as a result of restraining effect of anchors.
The deformation behavior and the failure mode of steel beam to concrete-filled square steel tube column connections with outer stiffening ring were discussed through quasi-static tests and numerical analysis.It is concluded that though it can meet requirements of seismic design,the connection has disadvantages of low bearing capacity and stress concentration at welds.However,the connection can be improved by adding"T"or"L"anchors inside the square steel column like details in concrete-filled circular steel tube column.According to the analysis of monotonic loading process which contains stress and P-Δcurves of connections,the improved connection shows higher capacity as a result of restraining effect of anchors.
引文
[1]韩林海.钢管混凝土结构[M].北京:科学出版社,2000:1-4.
[2]韩林海,杨有福.现代钢管混凝土结构技术[M].北京:中国建筑工业出版社,2007:2-5.
[3]中国建筑技术研究院.JGJ99-98高层民用建筑钢结构技术规程[S].北京:中国建筑工业出版社,1998.
[4]中国工程建设标准化协会标准.CECS159:2004矩形钢管混凝土结构技术规程[S].
[5]周天华,聂少锋,卢林枫,等.带内隔板的方钢管混凝土柱-钢梁节点设计研究[J].建筑结构学报,2005,26(5):23-29.Zhou Tianhua,Nie Shaofeng,Lu Linfeng,et al.Design of concrete-filled square tube column and steel beam joint with inter-nal diaphragms[J].Journal of Building Structures,2005,26(5):23-29.
[6]王来,王铁成,邓芃.方钢管混凝土框架内隔板节点抗震性能的试验研究[J].地震工程与工程振动,2005,25(1):76-80.Wang Lai,Wang Tiecheng,Deng Peng.Experimental research on seismic performances of joint reinforced with inner ringstiffener of concrete-filled square tubular frame[J].Earthquake Engineering and Engineering Vibration,2005,25(1):76-80.
[7]徐桂根,聂建国.方钢管混凝土柱内隔板贯通式节点核心区抗震性能的试验研究[J].土木工程学报,2011,44(8):1-8.Xu Guigen,Nie Jianguo.Experimental study of connections of concrete-filled square steel tubular columns with continuousdiaphragms[J].China Civil Engineering Journal,2011,44(8):1-8.
[8]Fukumoto T,Masaya T.Local elasto plastic behavior of steel beam to concrete-filled square steel tubular column connec-tions.Internal diaphragm type of column to wide flange beam connections[J].Journal of Structural and Construction Engi-neering,2002(560):213-220.
[9]聂建国,秦凯,肖岩.方钢管混凝土柱节点的试验研究及非线性有限元分析[J].工程力学,2006,23(11):99-109,115.Nie Jianguo,Qin Kai,Xiao Yan.Experimental investigation and nonlinear finite element analysis on the behavior of concrete-filled square steel tubular column connections[J].Engineering Mechanics,2006,23(11):99-109,115.
[10]王文达,韩林海,游经团.方钢管混凝土柱-钢梁外加强环节点滞回性能的实验研究[J].土木工程学报,2006,39(9):17-25.Wang Wenda,Han Linhai,You Jingtuan.Experimental studies on hysteretic behaviors of steel beam to concrete filled SHScolumn connections with stiffening ring[J].China Civil Engineering Journal,2006,39(9):17-25.
[11]高峰,王连国,王来.方钢管混凝土柱-钢梁外隔板节点三维非线性有限元研究[J].山东农业大学学报:自然科学版,2009,40(2):264-268.Gao Feng,Wang Lianguo,Wang Lai.3Dnonlinear fem analysis of concrete-filled square tubular column and steel beam joint[J].Journal of Shandong Agricultural University:Natural Science Edition,2009,40(2):264-268.
[12]王来,李楠.一种新型方钢管混凝土柱——H钢梁节点抗震性能的研究[J].哈尔滨工业大学学报,2007,39(s):447-450.Wang Lai,Li Nan.Study on seismic behavior of new type joint between concrete-filled square steel tube and H-type steelbeam[J].Journal of Harbin Institute of Technology,2007,39(s):447-450.
[13]李楠,王来.方钢管混凝土柱-钢梁外环肋节点抗震性能研究[J].工业建筑,2010,40(10):117-121,143.Li Nan,Wang Lai.Study on seismic behavior of joint with exterior diaphragms between concrete-filled square steel tubularcolumn and steel beam[J].Industrial Construction,2010,40(10):117-121,143.
[14]王先铁,郝际平,王丰平,等.锚定式方钢管混凝土柱与钢梁节点抗震性能试验研究[J].地震工程与工程振动,2007,27(5):95-102.Wang Xiantie,Hao Jiping,Wang Fengping,et al.Experimental studies on seismic behaviors of connections with anchoragesfor concrete-filled square steel tubes[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(5):95-102.
[15]韩林海.钢管混凝土结构:理论与实践[M].北京:科学出版社,2004:69-70.
[16]中国建筑科学研究院.JGJ101-96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1996.
[17]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[2]韩林海,杨有福.现代钢管混凝土结构技术[M].北京:中国建筑工业出版社,2007:2-5.
[3]中国建筑技术研究院.JGJ99-98高层民用建筑钢结构技术规程[S].北京:中国建筑工业出版社,1998.
[4]中国工程建设标准化协会标准.CECS159:2004矩形钢管混凝土结构技术规程[S].
[5]周天华,聂少锋,卢林枫,等.带内隔板的方钢管混凝土柱-钢梁节点设计研究[J].建筑结构学报,2005,26(5):23-29.Zhou Tianhua,Nie Shaofeng,Lu Linfeng,et al.Design of concrete-filled square tube column and steel beam joint with inter-nal diaphragms[J].Journal of Building Structures,2005,26(5):23-29.
[6]王来,王铁成,邓芃.方钢管混凝土框架内隔板节点抗震性能的试验研究[J].地震工程与工程振动,2005,25(1):76-80.Wang Lai,Wang Tiecheng,Deng Peng.Experimental research on seismic performances of joint reinforced with inner ringstiffener of concrete-filled square tubular frame[J].Earthquake Engineering and Engineering Vibration,2005,25(1):76-80.
[7]徐桂根,聂建国.方钢管混凝土柱内隔板贯通式节点核心区抗震性能的试验研究[J].土木工程学报,2011,44(8):1-8.Xu Guigen,Nie Jianguo.Experimental study of connections of concrete-filled square steel tubular columns with continuousdiaphragms[J].China Civil Engineering Journal,2011,44(8):1-8.
[8]Fukumoto T,Masaya T.Local elasto plastic behavior of steel beam to concrete-filled square steel tubular column connec-tions.Internal diaphragm type of column to wide flange beam connections[J].Journal of Structural and Construction Engi-neering,2002(560):213-220.
[9]聂建国,秦凯,肖岩.方钢管混凝土柱节点的试验研究及非线性有限元分析[J].工程力学,2006,23(11):99-109,115.Nie Jianguo,Qin Kai,Xiao Yan.Experimental investigation and nonlinear finite element analysis on the behavior of concrete-filled square steel tubular column connections[J].Engineering Mechanics,2006,23(11):99-109,115.
[10]王文达,韩林海,游经团.方钢管混凝土柱-钢梁外加强环节点滞回性能的实验研究[J].土木工程学报,2006,39(9):17-25.Wang Wenda,Han Linhai,You Jingtuan.Experimental studies on hysteretic behaviors of steel beam to concrete filled SHScolumn connections with stiffening ring[J].China Civil Engineering Journal,2006,39(9):17-25.
[11]高峰,王连国,王来.方钢管混凝土柱-钢梁外隔板节点三维非线性有限元研究[J].山东农业大学学报:自然科学版,2009,40(2):264-268.Gao Feng,Wang Lianguo,Wang Lai.3Dnonlinear fem analysis of concrete-filled square tubular column and steel beam joint[J].Journal of Shandong Agricultural University:Natural Science Edition,2009,40(2):264-268.
[12]王来,李楠.一种新型方钢管混凝土柱——H钢梁节点抗震性能的研究[J].哈尔滨工业大学学报,2007,39(s):447-450.Wang Lai,Li Nan.Study on seismic behavior of new type joint between concrete-filled square steel tube and H-type steelbeam[J].Journal of Harbin Institute of Technology,2007,39(s):447-450.
[13]李楠,王来.方钢管混凝土柱-钢梁外环肋节点抗震性能研究[J].工业建筑,2010,40(10):117-121,143.Li Nan,Wang Lai.Study on seismic behavior of joint with exterior diaphragms between concrete-filled square steel tubularcolumn and steel beam[J].Industrial Construction,2010,40(10):117-121,143.
[14]王先铁,郝际平,王丰平,等.锚定式方钢管混凝土柱与钢梁节点抗震性能试验研究[J].地震工程与工程振动,2007,27(5):95-102.Wang Xiantie,Hao Jiping,Wang Fengping,et al.Experimental studies on seismic behaviors of connections with anchoragesfor concrete-filled square steel tubes[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(5):95-102.
[15]韩林海.钢管混凝土结构:理论与实践[M].北京:科学出版社,2004:69-70.
[16]中国建筑科学研究院.JGJ101-96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1996.
[17]GB50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
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