钢筋混凝土柱拟静力试验数值模拟分析
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摘要
采用OpenSees中的非线性纤维单元对4根钢筋混凝土柱的拟静力试验进行了数值模拟。分析表明,非线性纤维单元能够较好地模拟构件的滞回性能,钢筋的屈服强度和硬化系数对模拟结果影响较大,考虑钢筋屈曲能比较准确地描述构件在破坏阶段刚度和强度的退化行为,与试验结果更为吻合。
The pseudo-static tests results of four RC columns are numerically modeled based on the nonlinear fiber element with OpenSees software.The experiment and simulated reults are compared.It is found that the nonlinear fiber element can accurately simulate the hysteretic behavior of RC columns and the simulated results are sensitive to the strength,hardening ratio and buckling behavior of the reinforcements.In order to model the degradation in strength and stiffness of RC columns loaded to their failure,the buckling of reinforcements should be taken into account in simulation.
The pseudo-static tests results of four RC columns are numerically modeled based on the nonlinear fiber element with OpenSees software.The experiment and simulated reults are compared.It is found that the nonlinear fiber element can accurately simulate the hysteretic behavior of RC columns and the simulated results are sensitive to the strength,hardening ratio and buckling behavior of the reinforcements.In order to model the degradation in strength and stiffness of RC columns loaded to their failure,the buckling of reinforcements should be taken into account in simulation.
引文
[1]李贵乾,郑罡,高波.基于OpenSees的钢筋混凝土桥墩拟静力试验数值分析[J].世界地震工程,2011,27(3):110~114Li Gui-qian,Zheng Gang,Gao Bo.Numerical Analysis for Pseudo-static Tests of Reinforced Concrete Bridge Columns Based on OpenSees[J].Worled Earthquake Engineering,2011,27(3):110~114(in Chinese)
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[12]杨玄.钢筋混凝土桥墩地震损伤分析与模型研究[D].重庆:重庆交通大学,2011Yang Xuan.Seismic Damage Analysis of Reinforced Concrete Bridge Pier with Model Research[D].Chongqing:Chongqing Jiaotong University,2011(in Chinese)
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[15]司炳君,孙治国,杜修力,等.钢筋混凝土桥墩地震弯剪破坏机理与震后快速修复技术研究[J].土木工程学报,2011,44(7):90~99Si Bing-jun,Sun Zhi-guo,Du Xiu-li,et al.Study on the Flexural-shear Damage Mechanisms and Rapid Repair Techniques for Earthquale Damage Bridge Piers[J].China Civil Engineering Journal,2011,44(7):90~99(in Chinese)
[16]杜修力,陈明琦,韩强.钢筋混凝土空心桥墩抗震性能试验研究[J].振动与冲击,2011,30(11):254~259Du Xiu-li,Chen Ming-qi,Han Qiang.Experimental Evaluation of Seismic Performance of Reinforced Concrete Hollow Bridge Columss[J].Journal of Vibration and Shock,2011,30(11):254~259(in Chinese)
[17]Sheikh S A,S D V,Khoury S S.Confinement of Highstrength Concrete Columns[J].ACI Struct J,1994,91(1):100~111
[18]Sheikh S A,K S S.Confined Concrete Columns with Stubs[J].ACI Struct J,1993,90(4):414~431
[19]司炳君,孙治国,任晓丹,等.钢筋混凝土桥墩滞回性能的有限元模拟分析[J].哈尔滨工业大学学报,2009,41(12):105~109Si Bing-jun,Sun Zhi-guo,Ren Xiao-dan,et al.Finte Element Analysis of the Hysteretic Behavior of Rcbridge Piers[J].Journal of Harbin Institute of Technolegy,2009,41(12):105~109(in Chinese)
[20]李正,李忠献.基于梁柱单元的钢筋混凝土桥墩地震损伤分析[J].天津大学学报,2011,44(3):189~195Li Zheng,Li Zhong-xian.Seismic Damage Analysis of Reinforced Concrete Bridge Piers Based on Beam-column Elements[J].Journal of Tianjin University,2011,44(3):189~195(in Chinese)
[21]艾庆华,王东升,向敏.基于纤维单元的钢筋混凝土桥墩地震损伤评价[J].计算力学学报,2011,28(5):737~742Ai Qing-hua,Wang Dong-sheng,Xiang Min.Seismic Damage Evaluation of Rcbridge Columns Based on Fiber Elements[J].Chinese Journal of Computational Mechanics,2011,28(5):737~742(in Chinese)
[2]解琳琳,叶献国,种迅,等.钢筋混凝土柱低周反复试验数值分析的参数研究[J].土木工程学报,2012,45(S1):273~277Xie Lin-lin,Ye Xian-guo,Chong Xun,et al.Parameter Research on Numerical Analysis of Low-cyclic Loading Test of RC Columns[J].China Civil Engineering Journal,2012,45(S1):273~277(in Chinese)
[3]Augusto Gomes J A.Nonlinear Cyclic Stress-strain Relationship of Reinforcing Bars Including Buckling[J].Engineering Structures,1997,19(10):822~826
[4]Rajesh Prasad Dhakal K M.Modeling for Postyield Buckling of Reinforcingment[J].Journal of Structural Engineering,2002,128(9):1139~1147
[5]陆新征,叶列平,潘鹏,等.钢筋混凝土框架结构拟静力倒塌试验研究及数值模拟竞赛Ⅱ:关键构件试验[J].建筑结构,2012,42(11):23~26Lu Xin-zheng,Ye Lie-ping,Pan Peng,et al.Pseudostatic Collapse Experiments and Numerical Prediction Competition of RC Frame StructureⅡ:Key Elements Experiment[J].Building Structure,2012,42(11):23~26(in Chinese)
[6]Dudley Charles Kent R P.Flexural Members with Confined Concrete[J].Journal of the Structural Division,1971,97(7):1969~1990
[7]刘立军,贾明明,于晓辉.箍筋约束混凝土的本构关系研究[J].工业建筑,2012,42(S1):188~191Liu Li-jun,Jia Ming-ming,Yu Xiao-hui.Study of Constitutive Relations for Steel-hoop-confined Concrete Material[J].Industrial Construction,2012,42(S1):188~191(in Chinese)
[8]孙治国,王东升,郭讯,等.汶川大地震绵竹市回澜立交桥震害调查[J].地震工程与工程振动,2009,29(4):132~138Sun Zhi-guo,Wang Dong-sheng,Guo Xun,et al.Damage Investigation of Huilan Interchange in Mianzhu after Wenchuan Earthquake[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(4):132~138(in Chinese)
[9]王东升,孙治国,郭迅,等.汶川地震桥梁震害经验及抗震研究若干新进展[J].公路交通科技,2011,28(10):44~53Wang Dong-sheng,Sun Zhi-guo,Guo Xun,et al.Lessons Learned from Wenchuan Seismic Damage and Recent Research on Seismic Design of Highway Bridges[J].Journal of Highway and Transportation Research and Development,2011,28(10):44~53(in Chinese)
[10]夏修身,陈兴冲,王常峰,等.桥梁震害分析与合理抗震体系研究[J].工程抗震与加固改造,2011,33(6):132~136Xia Xiu-shen,Chen Xing-chong,Wang Chang-feng,et al.Bridge Damage Analysis and Reasonable Seismic Systems[J].Earthquake Resistant Engineering and Retrofitting,2011,33(6):132~136(in Chinese)
[11]李贵乾.钢筋混凝土桥墩抗震性能试验研究及数值分析[D].重庆:重庆交通大学,2010Li Gui-qian.Experimental Study and Numerical Analysis on Seismic Performance of Reingorced Concrete Bridge Columns[D].Chongqing:Chongqing Jiaotong University,2010(in Chinese)
[12]杨玄.钢筋混凝土桥墩地震损伤分析与模型研究[D].重庆:重庆交通大学,2011Yang Xuan.Seismic Damage Analysis of Reinforced Concrete Bridge Pier with Model Research[D].Chongqing:Chongqing Jiaotong University,2011(in Chinese)
[13]李贵乾,郑罡,王军.圆形钢筋混凝土桥墩抗震性能(Ⅱ):试验结果评估[J].重庆交通大学学报(自然科学版),2011,30(6):1270~1274Li Gui-qian,Zheng Gang,Wang Jun.Seismic Performance of Circular Reinforced Concrete Bridge Columns(Ⅱ):Evaluation of Experimental Results[J].Journal of Chongqing Jiaotong University(Natural Science),2011,30(6):1270~1274(in Chinese)
[14]孙治国.钢筋混凝土桥墩抗震变形能力研究[D].哈尔滨:中国地震局工程力学研究所,2012Sun Zhi-guo.Research on the Seismic Deformation Capacity of RC Bridge Columns[D].Harbin:Institute of Engineering Mechanics,China Earthquake Administration,2012(in Chinese)
[15]司炳君,孙治国,杜修力,等.钢筋混凝土桥墩地震弯剪破坏机理与震后快速修复技术研究[J].土木工程学报,2011,44(7):90~99Si Bing-jun,Sun Zhi-guo,Du Xiu-li,et al.Study on the Flexural-shear Damage Mechanisms and Rapid Repair Techniques for Earthquale Damage Bridge Piers[J].China Civil Engineering Journal,2011,44(7):90~99(in Chinese)
[16]杜修力,陈明琦,韩强.钢筋混凝土空心桥墩抗震性能试验研究[J].振动与冲击,2011,30(11):254~259Du Xiu-li,Chen Ming-qi,Han Qiang.Experimental Evaluation of Seismic Performance of Reinforced Concrete Hollow Bridge Columss[J].Journal of Vibration and Shock,2011,30(11):254~259(in Chinese)
[17]Sheikh S A,S D V,Khoury S S.Confinement of Highstrength Concrete Columns[J].ACI Struct J,1994,91(1):100~111
[18]Sheikh S A,K S S.Confined Concrete Columns with Stubs[J].ACI Struct J,1993,90(4):414~431
[19]司炳君,孙治国,任晓丹,等.钢筋混凝土桥墩滞回性能的有限元模拟分析[J].哈尔滨工业大学学报,2009,41(12):105~109Si Bing-jun,Sun Zhi-guo,Ren Xiao-dan,et al.Finte Element Analysis of the Hysteretic Behavior of Rcbridge Piers[J].Journal of Harbin Institute of Technolegy,2009,41(12):105~109(in Chinese)
[20]李正,李忠献.基于梁柱单元的钢筋混凝土桥墩地震损伤分析[J].天津大学学报,2011,44(3):189~195Li Zheng,Li Zhong-xian.Seismic Damage Analysis of Reinforced Concrete Bridge Piers Based on Beam-column Elements[J].Journal of Tianjin University,2011,44(3):189~195(in Chinese)
[21]艾庆华,王东升,向敏.基于纤维单元的钢筋混凝土桥墩地震损伤评价[J].计算力学学报,2011,28(5):737~742Ai Qing-hua,Wang Dong-sheng,Xiang Min.Seismic Damage Evaluation of Rcbridge Columns Based on Fiber Elements[J].Chinese Journal of Computational Mechanics,2011,28(5):737~742(in Chinese)
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