基于非线性纤维梁柱单元的钢管混凝土框架动力时程分析
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摘要
目前,用于钢管混凝土框架结构动力时程分析的计算理论模型主要有:纤维模型和三维有限元模型,三维有限元模型计算量大,且数值计算收敛困难,在钢管混凝土结构动力时程分析中的应用受到一定限制。为了研究钢管混凝土框架结构在地震作用下的抗震性能,本文在构件层次上运用OpenSees计算平台中的非线性纤维梁-柱单元对钢管混凝土框架结构进行模拟计算,通过对其他研究者完成的某模拟地震振动台试验钢管混凝土框架模型进行数值模拟,输入不同工况的地震波对该模型进行了动力时程分析,总体上数值模拟结果和试验结果吻合较好,表明基于OpenSees平台的非线性纤维模型方法能够较好地模拟钢管混凝土框架结构的动力特性。
There are two main kinds of approach to simulate the dynamic behavior of the concrete filled steel tubular(CFST) frame structures,i.e.,three dimension finite element method and fiber model based on nonlinear fiber beam-column.The three dimension finite element method is limited to be used because of it's computational efficiency and convergence.In order to study the seismic performance of the CFST frame structures,the nonlinear fiber beam-column element based on the OpenSees platform is used in this paper.A typical frame structure model with circular CFST columns which is performed shaking table test by the other researcher is used to verify and simulate under different earthquake waves.The numerical results are match well with the tested results in general.It shows that the nonlinear fiber beam-column model can simulate the dynamic behavior of the CFST frame rationally and logically.
There are two main kinds of approach to simulate the dynamic behavior of the concrete filled steel tubular(CFST) frame structures,i.e.,three dimension finite element method and fiber model based on nonlinear fiber beam-column.The three dimension finite element method is limited to be used because of it's computational efficiency and convergence.In order to study the seismic performance of the CFST frame structures,the nonlinear fiber beam-column element based on the OpenSees platform is used in this paper.A typical frame structure model with circular CFST columns which is performed shaking table test by the other researcher is used to verify and simulate under different earthquake waves.The numerical results are match well with the tested results in general.It shows that the nonlinear fiber beam-column model can simulate the dynamic behavior of the CFST frame rationally and logically.
引文
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[19]韩小雷,陈学伟,郑宜,彭樵斌.足尺钢框架振动台试验及动力弹塑性数值模拟[J].地震工程与工程振动,2008,28(6):134～141Han Xiao-lei,Chen Xue-wei,Jack Cheang,Peng Qiaobin.Dynamic experiment and numerical simulation of afull scale steel frame[J].Earthquake Engineering andEngineering Vibration,2008,28(6):134～141(inChinese)
[20]王文达,韩林海.钢管混凝土柱-钢梁平面框架的滞回关系[J].清华大学学报(自然科学版),2009,49(12):1934～1398Wang Wen-da,Han Lin-hai.Hysteresis relationship inconcrete filled steel tubular columns and steel beamplanar frames[J].Journal of Tsinghua University(Science&Technology),2009,49(12):1934～1938(in Chinese)
[2]宗周红,林东欣,房贞政,邱法维.两层钢管混凝土组合框架结构抗震性能试验研究[J].建筑结构学报,2002,23(2):27～35Zong Zhou-hong,Lin Dong-xin,Fang Zhen-zheng,QiuFa-wei.Experimental research on seismic behavior of atwo-story concrete filled steel tubular composite frame[J].Journal of Building Structures,2002,23(2):27～35(in Chinese)
[3]周栋梁,钱稼茹,方小丹,江毅.环梁连接的RC梁-钢管混凝土柱框架试验研究[J].土木工程学报,2004:37(5):7～15Zhou Dong-liang,Qian Jia-ru,Fang Xiao-dan,JiangYi.Experimental study on a RC beam-STCC columnframe with RC ring beam connectors[J].China CivilEngineering Journal,2004,37(5):7～15(inChinese)
[4]Tsai K C,Hsiao P C,Wang K J,et al.Pseudo-dynamic tests of a full-scale CFT/BRB frame-Part I:Specimen design,experiment and analysis[J].Earthquake Engineering&Structural Dynamics,2008,37(7):1081～1098
[5]Tsai K C,Hsiao P C.Pseudo-dynamic test of a full-scale CFT/BRB frame-Part II:Seismic performance of buckling-restrained braces and connections[J].Earthquake Engineering&Structural Dynamics,2008,37(7):1099～1115
[6]Herrera R,Ricles J M,Sause R.Seismic performanceevaluation of a large-scale composite MRF using pseudo-dynamic testing[J].Journal of Structural Engineering,ASCE,2008,134(2):279～288
[7]黄襄云,周福霖.钢管混凝土结构地震模拟试验研究[J].西北建筑工程学院学报(自然科学版),2000,17(3):14～17Huang Xiang-yun,Zhou Fu-lin.Experimentalinvestigation on concrete filled steel tubular structure[J].Journal of Northwest Institute of ArchitecturalEngineering(Natural Sciences Edition),2000,17(3):14～17(in Chinese)
[8]童菊仙,徐礼华,凡红.方钢管混凝土框架模型振动台试验研究[J].工程抗震与加固改造,2005,27(3):65～69Tong Ju-xian,Xu Li-hua,Fan Hong.Concrete filledsquare steel tubular frame model research on shakingtable test[J].Earthquake Resistant Engineering andRetrofitting,2005,27(3):65～69(in Chinese)
[9]许成祥,徐礼华,杜国锋,凡红.钢管混凝土柱框架结构模型地震反应试验研究[J].武汉大学学报(工学版),2006,39(3):68～72Xu Cheng-xiang,Xu Li-hua,et al.Experimental studyon earthquake response of a CFST column framestructure model[J].Engineering Journal of WuhanUniversity,2006,39(3):68～72(in Chinese)
[10]Han L H,Li W,Yang Y F.Seismic behavior ofconcrete-filled steel tubular frame to RC shear wall high-rise mixed structures[J].Journal of Constructional SteelResearch,2009,65(9):1249～1260
[11]丁阳,许成祥,戴学新,李忠献.钢管混凝土框架结构抗震性能的非线性有限元分析[J].建筑结构,2004:34(1):7～10Ding Yang,Xu Cheng-xiang,Dai Xue-xin,Li Zhong-xian.Nonlinear finite analysis of seismic behavior of concrete-filled steel tubular frame[J].Building Structure,2004,34(1):7～10(in Chinese)
[12]王铁成,卢明奇.轴压比对方钢管混凝土框架延性影响的有限元分析[J].吉林大学学报(工学版),2005,35(1):70～75Wang Tie-cheng,Lu Ming-qi.Finite element analysis ofeffect of axial load level on ductility of CFRT frames[J].Journal of Jilin University(Engineering and Technology Edition),2005,35(1):70～75(inChinese)
[13]聂建国,秦凯,肖岩.方钢管混凝土框架结构的Pushover分析[J].工业建筑,2005,35(3):68～70Nie Jian-guo,Qin Kai,Xiao Yan.Pushover analysis onthe seismic behavior of a concrete-filled rectangulartubular frame structure[J].Industrial Construction,2005,35(3):68～70(in Chinese)
[14]刘晶波,郭冰,刘阳冰.组合梁-方钢管混凝土柱框架结构抗震性能的Pushover分析[J].地震工程与工程振动,2008,28(5):87～93Liu Jing-bo,Guo Bing,Liu Yang-bing.Pushoveranalysis of seismic behavior of steel-concrete compositebeam and concrete-filled rectangular tube frame structure[J].Earthquake Engineering and EngineeringVibration,2008,28(5):87～93(in Chinese)
[15]王文达,韩林海.钢管混凝土框架结构力学性能非线性有限元分析[J].建筑结构学报,2008,29(6):75～83Wang Wen-da,Han Lin-hai.Nonlinear finite elementanalysis on mechanics performance of concrete filledsteel tubular frame[J].Journal of Building Structure,2008,29(6):75～83(in Chinese)
[16]王文达,韩林海.钢管混凝土框架实用荷载-位移恢复力模型研究[J].工程力学,2008,25(11):62～69Wang Wen-da,Han Lin-hai.Research on practicalresilience model of load versus displacement for concretefilled steel tubular frame[J].Engineering Mechanics,2008,25(11):62～69(in Chinese)
[17]王文达,韩林海.钢管混凝土框架力学性能的简化二阶弹塑性分析[J].清华大学学报(自然科学版),2009,49(9):23～26Wang Wen-da,Han Lin-hai.Simplified second-orderelastic-plastic analyses on mechanics behavior ofconcrete filled steel tubular frame[J].Journal of Tsinghua University(Science&Technology),2009,49(9):23～26(in Chinese)
[18]王文达,夏秀丽,史艳丽.钢管混凝土框架基于性能的抗震设计探讨[J].工程抗震与加固改造,2010,32(2):96～102Wang Wen-da,Xia Xiu-li,Shi Yan-li.Discussion of performance-based seismic design for concrete-filledsteel tubular frame[J].Earthquake ResistantEngineering and Retrofitting,2010,32(2):96～102(in Chinese)
[19]韩小雷,陈学伟,郑宜,彭樵斌.足尺钢框架振动台试验及动力弹塑性数值模拟[J].地震工程与工程振动,2008,28(6):134～141Han Xiao-lei,Chen Xue-wei,Jack Cheang,Peng Qiaobin.Dynamic experiment and numerical simulation of afull scale steel frame[J].Earthquake Engineering andEngineering Vibration,2008,28(6):134～141(inChinese)
[20]王文达,韩林海.钢管混凝土柱-钢梁平面框架的滞回关系[J].清华大学学报(自然科学版),2009,49(12):1934～1398Wang Wen-da,Han Lin-hai.Hysteresis relationship inconcrete filled steel tubular columns and steel beamplanar frames[J].Journal of Tsinghua University(Science&Technology),2009,49(12):1934～1938(in Chinese)
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