往复荷载作用下圆钢管煤矸石混凝土纯弯构件力学性能的有限元分析
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摘要
目的分析往复荷载作用下圆钢管煤矸石混凝土纯弯构件的滞回性能和抗震性能,考察不同参数对其抗震性能的影响规律.方法利用数值分析方法,采用非线性有限元分析软件ABAQUS对往复荷载作用下的圆钢管煤矸石混凝土纯弯构件进行计算机模拟分析,通过选取单元、划分网格、设定接触等一系列建模过程,对纯弯构件的荷载—变形关系进行计算.结果计算得到的滞回曲线呈饱满的纺锤形,无明显的下降段,表现出了良好的耗能性能和延性,说明核心煤矸石混凝土与圆钢管协同互补、共同工作,保证了材料性能的充分发挥,抗震性能良好.结论含钢率对纯弯构件的承载力和抗震性能影响较大,随着含钢率的增大,构件的承载力和抗震性能有明显的提高.
The hysteretic behavior and seismic capacity of pure bending of the gangue concrete-filled circular steel tube members under reversed loading are analyzed with finite element method.The influences of different parameters on seismic capacity are investigated.The finite element program ABAQUS is used to simulate the gangue concrete-filled circular steel tube members under pure bending,and load versus deformation rela-tionship is calculated by the way of unit selecting,meshing,contact setting.The calculated hysteresis curves are fully spindle-shaped,with no obvious declining segment.It shows a good dissipation energy performance and ductility and indicates that the core gangue concrete and steel complementary can work together and make the full use of their properties and the seismic performance is good.The steel ratio significantly influ-ences member′s ultimate strength and seismic capacity,which are improved obviously with the increase of the steel ratio.
The hysteretic behavior and seismic capacity of pure bending of the gangue concrete-filled circular steel tube members under reversed loading are analyzed with finite element method.The influences of different parameters on seismic capacity are investigated.The finite element program ABAQUS is used to simulate the gangue concrete-filled circular steel tube members under pure bending,and load versus deformation rela-tionship is calculated by the way of unit selecting,meshing,contact setting.The calculated hysteresis curves are fully spindle-shaped,with no obvious declining segment.It shows a good dissipation energy performance and ductility and indicates that the core gangue concrete and steel complementary can work together and make the full use of their properties and the seismic performance is good.The steel ratio significantly influ-ences member′s ultimate strength and seismic capacity,which are improved obviously with the increase of the steel ratio.
引文
[1]韩林海.钢管混凝土结构[M].北京:中国科学出版社,2000.(Han Linhai.Concrete filled steel tubular structures[M].Beijing:China Science Press,2000.)
[2]Tomii M,Sakino K.Elasto-plastic behaviour of con-crete filled square steel tubular beam-columns[J].Transactions of Architectural Institute of Japan,1979,280:111-120.
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[4]卢辉,韩林海.圆钢管混凝土抗弯刚度计算方法的探讨[J].工业建筑,2004,34(1):1-5.(Lu Hui,Han Linhai.Calculation method of bendingrigidity of concrete filled steel tube[J].IndustrialArchitecture,2004,34(1):1-5.)
[5]Prion H G L,Boehme J.Beam-column behavior ofsteel tubes filled with high strength concrete[J].Ca-nadian Journal of Civil Engineering,1994,21:207-218.
[6]Boyd P F,Cofer W F,Mclean D I.Seismic perform-ance of steel-encased concrete columns under flexuralloading[J].ACI Structural Journal,1995,92(3):355-364.
[7]Elremaily A,Azizinamini A.Behavior and strengthof circular concrete-filled tube columns[J].Journalof Constructional Steel Research,2002,58(12):1567-1591.
[8]Lahlou K,Lachemi M,Aitcin P C.Confined high-strength concrete under dynamic compressive loading[J].Journal of Structural Engineering,ASCE,1999,125(10):1100-1108.
[9]Smith T.FRP-strenghtened RC Beams-II:review ofdebonding strength models[J].Engineering Struc-ture,2002,24(4):385-395.
[10]韩林海.钢管混凝土结构-理论与实践[M].北京:科学出版社,2007.(Han Linhai.Concrete filled steel tubular structures[M].Beijing:China Science Press,2007.)
[11]李帼昌.自应力钢管轻集料混凝土结构[M].沈阳:东北大学出版社,2001.(Li Guochang.Lightweight aggregate concrete filledsteel tubular structures[M].Shenyang:NortheasternUniversity Press,2001.)
[12]韩林海,陶忠,闫维波.圆钢管混凝土构件弯矩—曲率滞回特性研究[J].地震工程与工程振动,2000,20(3):50-59.(Han Linhai,Tao Zhong,Yan Weibo.Hysteresisstudy on moment-curvature of concrete filled steeltubular structures[J].Earthquake engineering andengineering vibration,2000,20(3):50-59.)
[13]吉伯海.钢管约束下核心轻集料混凝土基本力学性能研究[D].南京:河海大学土木工程学院,2006.(Ji Bohai.Mechanical properties study of lightweightaggregate concrete constrained by steel tube[D].Nanjing:School of Civil Engineering,Hehai Univer-sity,2006.)
[14]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,2004.(Han Linhai,Yang Youfu.Technology of concretefilled steel tubular structures[M].Beijing:ChinaBuilding Industry Press,2004.)
[15]李忠献.工程结构试验理论与技术[M].天津:天津大学出版社,2004.(Li Zhongxian.Test theory and technology of engi-neering structures[M].Tianjin:Tianjin UniversityPress,2004.)
[2]Tomii M,Sakino K.Elasto-plastic behaviour of con-crete filled square steel tubular beam-columns[J].Transactions of Architectural Institute of Japan,1979,280:111-120.
[3]蔡绍怀,顾万黎.钢管混凝土抗弯强度的试验研究[J].建筑结构,1985,15(3):28-29.(Cai Shaohuai,Gu Wanli.Experimental study ofbending strength of concrete filled steel tubular beam[J].Journal of Building Structures,1985,15(3):28-29.)
[4]卢辉,韩林海.圆钢管混凝土抗弯刚度计算方法的探讨[J].工业建筑,2004,34(1):1-5.(Lu Hui,Han Linhai.Calculation method of bendingrigidity of concrete filled steel tube[J].IndustrialArchitecture,2004,34(1):1-5.)
[5]Prion H G L,Boehme J.Beam-column behavior ofsteel tubes filled with high strength concrete[J].Ca-nadian Journal of Civil Engineering,1994,21:207-218.
[6]Boyd P F,Cofer W F,Mclean D I.Seismic perform-ance of steel-encased concrete columns under flexuralloading[J].ACI Structural Journal,1995,92(3):355-364.
[7]Elremaily A,Azizinamini A.Behavior and strengthof circular concrete-filled tube columns[J].Journalof Constructional Steel Research,2002,58(12):1567-1591.
[8]Lahlou K,Lachemi M,Aitcin P C.Confined high-strength concrete under dynamic compressive loading[J].Journal of Structural Engineering,ASCE,1999,125(10):1100-1108.
[9]Smith T.FRP-strenghtened RC Beams-II:review ofdebonding strength models[J].Engineering Struc-ture,2002,24(4):385-395.
[10]韩林海.钢管混凝土结构-理论与实践[M].北京:科学出版社,2007.(Han Linhai.Concrete filled steel tubular structures[M].Beijing:China Science Press,2007.)
[11]李帼昌.自应力钢管轻集料混凝土结构[M].沈阳:东北大学出版社,2001.(Li Guochang.Lightweight aggregate concrete filledsteel tubular structures[M].Shenyang:NortheasternUniversity Press,2001.)
[12]韩林海,陶忠,闫维波.圆钢管混凝土构件弯矩—曲率滞回特性研究[J].地震工程与工程振动,2000,20(3):50-59.(Han Linhai,Tao Zhong,Yan Weibo.Hysteresisstudy on moment-curvature of concrete filled steeltubular structures[J].Earthquake engineering andengineering vibration,2000,20(3):50-59.)
[13]吉伯海.钢管约束下核心轻集料混凝土基本力学性能研究[D].南京:河海大学土木工程学院,2006.(Ji Bohai.Mechanical properties study of lightweightaggregate concrete constrained by steel tube[D].Nanjing:School of Civil Engineering,Hehai Univer-sity,2006.)
[14]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,2004.(Han Linhai,Yang Youfu.Technology of concretefilled steel tubular structures[M].Beijing:ChinaBuilding Industry Press,2004.)
[15]李忠献.工程结构试验理论与技术[M].天津:天津大学出版社,2004.(Li Zhongxian.Test theory and technology of engi-neering structures[M].Tianjin:Tianjin UniversityPress,2004.)
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