方钢管混凝土分叉柱与钢梁连接节点的抗震性能研究
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摘要
通过4个1/2比例的钢管混凝土分叉柱与钢梁连接节点的拟静力试验,对其滞回性能、刚度退化、延性性能、耗能能力以及破坏特征进行了研究与分析,并与纤维杆元模型模拟的结果进行了比较。结果表明:节点在梁端塑性铰破坏模式下钢管混凝土树状节点的抗震性能较好;在局部焊接破坏模式下延性较低,抗震性能相对较差;钢管分叉柱长宽比较大时,设置纵向隔板能更好地保证节点区域的稳定性。
A quasi-static experimental research program is presented,Four 1/2 concrete-filled square steel tube treelike nodes were tested under low-cycle reversed loading at the ends of beams.The hysteretic behavior,degradation of stiffness,ductility and energy dissipations,the modes of failure were studied based on the experimental data and comparisons with analysis.The results showed that the seismic performance was good for the beam plastic hinge failure mode.While for the local weld failure mode,the seismic performance was poor;when the length and breadth of bifurcate column is large,vertical clapboard can ensure the stabilization of joint region.
A quasi-static experimental research program is presented,Four 1/2 concrete-filled square steel tube treelike nodes were tested under low-cycle reversed loading at the ends of beams.The hysteretic behavior,degradation of stiffness,ductility and energy dissipations,the modes of failure were studied based on the experimental data and comparisons with analysis.The results showed that the seismic performance was good for the beam plastic hinge failure mode.While for the local weld failure mode,the seismic performance was poor;when the length and breadth of bifurcate column is large,vertical clapboard can ensure the stabilization of joint region.
引文
[1]吕西林,陆伟东.反复荷载作用下方钢管混凝土柱的抗震性能试验研究[J].建筑结构学报,2000,21(2):2-11.(LU Xiling,Lu weidong.Seismic behaviorof concrete filled rectangular steel tubular columnsunder cyclic loading[J].Journal of Building Structures,2000,21(2):2-11.(in Chinese))
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[12]周学军,曲慧.方钢管混凝土框架梁柱节点在低周反复荷载作用下的抗震性能研究[J].土木工程学报.2006,39(1):38-43.(Zhou Xuejun,Qu Hui.Seismicresistance of bolt-weld joint and all-weld joint ofconcrete filled square steel tube and steel beam undercyclic load[J].China Civil Engineering Journal,2006,39(1):38-43.(in Chinese))
[13]Li K N,Otani S.Multi-spring model for 3-dimensionanalysis of RC members[J].International Journal ofStructural Engineering and Mechanics,1993,1(1):17-30.
[14]吕西林,卢文生.纤维杆元模型在框架结构非线性分析中的应用[J].力学季刊,2006,27(1):14-22.(L摮Xilin,Lu Wensheng.Application of fiber line elementmodel in nonliner analysis of frame structures[J].Chinese Quarterly of Mechanics,2006,27(1):14-22.(in Chinese))
[15]Varma A H,Riclesm J M,Richard S,et al.Seismbehavior and modeling of high-strength compositeconcrete-fill steel tube(CFT)beam-columns[J].Journal of Construction Steel Research,2002,58(4):725-758.
[16]王文达,韩林海,陶忠.钢管混凝土柱-钢梁平面框架抗震性能的试验研究[J].建筑结构学报,2006,27(3):48-58.(WANG Wenda,HAN Linhai,TAOZhong.Experimental research on seismic behavior ofconcrete filled CHS and SHS columns and steel beamplanar frames[J].Journal of Building Structures,2006,27(3):48-58.(in Chinese))
[2]陶忠,韩林海.方钢管混凝土压弯构件滞回性能的试验研究[J].地震工程与工程震动,2001,21(1):74-78.(Tao Zhong,Han Linhai.Tests of hysteresisbehaviors of concrete filled steel tubular beam-columnswith square sections[J].Earthquake Engineering andEngineering Vibration,2001,21(1):74-78.(inChinese))
[3]Beutel J,Thambiratnam D,Perera N.Cyclic behaviorof concrete filled steel tubular column to steel beamconnections[J].Engineering Structures,2002,24(3):29-38.
[4]林于东,林杰,宗周红.低周反复荷载作用下矩形钢管混凝土柱与钢梁连接节点的受力性能[J].地震工程与工程震动,2004,24(4):62-69.(Lin Yudong,Lin Jie,Zong Zhouhong.Behavior of connections ofrectangular concrete-filled steel tubular column withsteel beam subjected to reversed lowcyclic loading[J].Earthquake Engineering and Engineering Vibration,2004,24(4):62-69.(in Chinese))
[5]宗周红,林于东,林杰.矩形钢管混凝土柱与钢梁半刚性连接节点的抗震性能[J].建筑结构学报,2004,25(6):29-36.(Zong Zhouhong,Lin Yudong,Lin Jie.Experimental study on seismic performance ofrectangular concrete filled steel tube column to steelbeam semi-rigid connections[J].Journal of BuildingStructures,2004,25(6):29-36.(in Chinese))
[6]Ricles J M,Peng S W,Lu L W.Seismic behavior ofcomposite concrete filled steel tube column-wide flangebeam moment connections[J].Journal of StructuralEngineering,ASCE,2004,130(2):223-232.
[7]宗周红,林于东,陈惠文,等.方钢管混凝土柱与钢梁连接节点的拟静力试验研究[J].建筑结构学报,2005,26(1):77-84.(Zong Zhouhong,Lin Yudong,Chen Huiwen,et al.Quasi-static test on concrete-filledsquare steel tube column to steel beam connections[J].Journal of Building Structures,2005,26(1):77-84.(in Chinese))
[8]Chiew S P,Lie S T,Dai C W.Moment resistance ofsteel I-beam to CFTcolumn connections[J].Journal ofstructural Engineering,2001,127(10):1164-1172.
[9]Varma A H,Ricles J M,Sause R,et al.Seismicbehavior and modeling of high-strength compositeconcrete-filled steel tube beam-columns[J].Journal ofConstructional Steel Research,2002,58(5-8):725-758.
[10]周天华,何保康,陈国津,等.方钢管混凝土柱与钢梁框架节点的抗震性能试验研究[J].建筑结构学报,2004,25(1):9-16.(Zhou Tianhua,He Baokang,ChenGuojin,et al.Experimental studies on seismic behaviorof concrete-filled steel square tubular column and steelbeam joints under cyclic loading.[J].Journal ofBuilding Structures,2004,25(1):9-16(in Chinese))
[11]王来,王铁成.方钢管混凝土框架内隔板节点抗震性能的试验研究[J].地震工程与工程震动,2005,25(1):76-80.(Wang Lai,Wang Tiecheng.Experimentalresearch on seismic performances of joint reinforced withinner ring stiffener of concrete-filled square tubularframe[J].Earthquake Engineering and EngineeringVibration,2005,25(1):76-80.(in Chinese))
[12]周学军,曲慧.方钢管混凝土框架梁柱节点在低周反复荷载作用下的抗震性能研究[J].土木工程学报.2006,39(1):38-43.(Zhou Xuejun,Qu Hui.Seismicresistance of bolt-weld joint and all-weld joint ofconcrete filled square steel tube and steel beam undercyclic load[J].China Civil Engineering Journal,2006,39(1):38-43.(in Chinese))
[13]Li K N,Otani S.Multi-spring model for 3-dimensionanalysis of RC members[J].International Journal ofStructural Engineering and Mechanics,1993,1(1):17-30.
[14]吕西林,卢文生.纤维杆元模型在框架结构非线性分析中的应用[J].力学季刊,2006,27(1):14-22.(L摮Xilin,Lu Wensheng.Application of fiber line elementmodel in nonliner analysis of frame structures[J].Chinese Quarterly of Mechanics,2006,27(1):14-22.(in Chinese))
[15]Varma A H,Riclesm J M,Richard S,et al.Seismbehavior and modeling of high-strength compositeconcrete-fill steel tube(CFT)beam-columns[J].Journal of Construction Steel Research,2002,58(4):725-758.
[16]王文达,韩林海,陶忠.钢管混凝土柱-钢梁平面框架抗震性能的试验研究[J].建筑结构学报,2006,27(3):48-58.(WANG Wenda,HAN Linhai,TAOZhong.Experimental research on seismic behavior ofconcrete filled CHS and SHS columns and steel beamplanar frames[J].Journal of Building Structures,2006,27(3):48-58.(in Chinese))
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