混凝土强度对组合梁动力性能的影响
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摘要
目的研究混凝土强度对组合梁动力性能的影响,为实际工程中组合梁的混凝土强度选择提供理论基础.方法基于ABAQUS有限元模拟软件对钢-混凝土组合梁进行模拟,将模拟结果与试验结果对比,验证有限元模拟方法的可行性.改变混凝土强度,研究其对组合梁在低周反复荷载作用下的滞回性能、刚度退化、耗能能力、钢梁与混凝土板间滑移等动力性能的影响.结果受向下荷载时,随着混凝土强度的增大,组合梁的抗弯承载力、截面刚度、耗能能力、滑移都随着增大;受向上荷载时,混凝土强度改变对组合梁动力性能影响较小.结论混凝土强度提高,组合梁具有较好的动力性能,当达到一定强度后,继续增大混凝土强度对组合梁动力性能的影响逐渐减弱.实际工程中应选取适合的混凝土强度,这样既满足强度要求又经济.
The paper studies the influence of concrete strength on the dynamic performance of steel-concrete composite beams in order to provide theoretical basis in practical engineering for the choice of composite beam concrete strength.The simulaion of steel-concrete composite beam is based on ABAQUS,the finite element simulation software.The simulated results are compared with the test results to verify correctness of the finite element simulation method.By changing concrete strength of steel-concrete composite beams under low reversed cyclic loading,studies are performed on the influence of hysteresis performance,stiffness degeneration,energy dissipation and slippage between steel beam and concrete slab.The results show that when bearing down load,flexural bearing capacity,section stiffness,energy dissipation capacity and slippage of steel-concrete composite beams improve with the increase of concrete strength.When bearing up load,the changes of concrete strength have less impact on the dynamic performance of steel-concrete composite beams.So concrete strength increased,steel-concrete composite beams have better dynamic performance.When reach a certain strength,if continuing to increase concrete strength,the influence on the dynamic performance of steel-concrete composite beams is gradually weakened.Actual engineering should select suitable concrete strength,so that it can meet the strength requirement and be economical.
The paper studies the influence of concrete strength on the dynamic performance of steel-concrete composite beams in order to provide theoretical basis in practical engineering for the choice of composite beam concrete strength.The simulaion of steel-concrete composite beam is based on ABAQUS,the finite element simulation software.The simulated results are compared with the test results to verify correctness of the finite element simulation method.By changing concrete strength of steel-concrete composite beams under low reversed cyclic loading,studies are performed on the influence of hysteresis performance,stiffness degeneration,energy dissipation and slippage between steel beam and concrete slab.The results show that when bearing down load,flexural bearing capacity,section stiffness,energy dissipation capacity and slippage of steel-concrete composite beams improve with the increase of concrete strength.When bearing up load,the changes of concrete strength have less impact on the dynamic performance of steel-concrete composite beams.So concrete strength increased,steel-concrete composite beams have better dynamic performance.When reach a certain strength,if continuing to increase concrete strength,the influence on the dynamic performance of steel-concrete composite beams is gradually weakened.Actual engineering should select suitable concrete strength,so that it can meet the strength requirement and be economical.
引文
[1]薛伟辰,李昆,李杰.钢混凝土组合梁低周反复荷载试验研究[J].地震工程与工程振动,2002,22(6):65-70.(Xue Weichen,Li Kun,Li Jie.Study on steel-con-crete composite beams under low-reversed cyclicloading[J].Earthquake Engineering and EngineeringVibration,2002,22(6):65-70.)
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[4]Chen Zongping,Zhao Hongtie,Xue Jianyang,et al.Concrete cover thickness of SRC special-shaped col-umns[J].Journal of Harbin Institute of Technology,2005,37(2):181-184.
[5]蔡建国,冯健,顾洪波,等.大型铸钢节点的工程应用和分析[J].钢结构,2008,1(3):13-17.(Cai Jianguo,Feng Jian,Gu Hongbo,et al.Practicalapplication and analysis of complex cast-steel joint[J].Steel Construction,2008,1(3):13-17.)
[6]聂建国,王宇航.基于ABAQUS的钢-混凝土组合结构纤维梁模型的开发及应用[J].工程力学,2012,29(1):70-80.(Nie Jianguo,Wang Yuhang.Development and ap-plication of steel-concrete composite fiber beammodel in abaqus platform[J].Engineering Mechan-ics,2012,29(1):70-80.)
[7]蒋丽忠,余志武,曹华,等.剪力连接度对钢-混凝土组合梁抗震性能的影响[J].建筑结构,2008,38(3):52-54,120.(Jiang Lizhong,Yu Zhiwu,Cao Hua,et al.Effect ofshear connection degree on seismic resistant perform-ance of steel-concrete composite beams[J].BuildingStructure,2008,38(3):52-54,120.)
[8]薛伟辰,李杰,李昆.预应力钢-混凝土组合梁抗震性能试验研究[J].哈尔滨工业大学学报,2007,39(4):656-660.(Xue Weichen,Li Jie,Li Kun.Experimental studieson seismic performance of prestressed steel-concretecomposite beams[J].Journal of Harbin Institute ofTechnology,2007,39(4):656-660.)
[9]谭燕秋,王伟,武祥宝.钢-混凝土连续组合梁受力性能的有限元分析[J].钢结构,2009,24(2):20-22,48.(Tan Yanqiu,Wang Wei,Wu Xiangbao.The fem a-nalysis of the performance of continuous steel-con-crete composite beam[J].Steel Construction,2009,24(2):20-22,48.)
[10]杨有福,韩林海.矩形钢管自密实混凝土的钢管-混凝土界面粘结性能研究[J].工业建筑,2006,36(11):32-36.(Yang Youfu,Han Linhai.Research on bond behav-ior betw een steel and concrete of self-compactingconcrete filled steel tubes w ith rectangular sections[J].Industrial Construction,2006,36(11):32-36.)
[11]Li Hongnan,Li Bing.Study of a new macro-finite el-ement model for seismic performance of RC shearw alls using quasi-static experiments[J].Advances inStructural Engineering,2006,9(2):173-184.
[12]Andreadall A,Luigno D.Nonlinear behavior of ex-ternally prestressed composite beams:analytical mod-el[J].Journal of the Structural Division(ASCE),1998,124(5):588-597.
[13]Willibald S,Packer J A,Puthli R S.Experimentalstudy of bolted HSS flange-plate connections in axialtension[J].Journal of Structural Engineering,2002,128(3):328-336.
[14]Weng C C,Yen S I,Jiang M H.Experimental studyon shear splitting failure of full-scale composite con-crete encased steel beams[J].Journal of StructuralEngineering(ASCE),2002,128(9):1186-1194.
[15]杨坛.基于ANSYS的圆孔蜂窝钢梁承载力研究[D].广西:广西大学,2007.(Yang Tan.Based on ANSYS steel bearing capacityof the round hole honeycomb[D].Guangxi:GuangxiUniversity,2007.)
[16]苗林,陈德伟.考虑层间滑移效应的组合梁解析计算[J].同济大学学报:自然科学版,2011,39(8):1113-1119.(Miao Lin,Chen Dewei.Closed-form solution ofcomposite beam considering interfacial slip effects[J].Journal of Tongji University:Natural Science,2011,39(8):1113-1119.)
[2]Han Linhai,Huang Yaoguo,Chen Zhipo,et al.Ex-perimental behavior of steel tube confined concrete(STCC)columns[J].Steel and Composite Struc-tures-An International Journal,2005,5(6):459-484.
[3]Wang Bo,Xue Jianyang,Zhao Hongtie,et al.Analy-sis of flange effect on shear bearing capacity of spe-cial shaped columns[J].Journal of Building Struc-tures,2006,27(S):283-285.
[4]Chen Zongping,Zhao Hongtie,Xue Jianyang,et al.Concrete cover thickness of SRC special-shaped col-umns[J].Journal of Harbin Institute of Technology,2005,37(2):181-184.
[5]蔡建国,冯健,顾洪波,等.大型铸钢节点的工程应用和分析[J].钢结构,2008,1(3):13-17.(Cai Jianguo,Feng Jian,Gu Hongbo,et al.Practicalapplication and analysis of complex cast-steel joint[J].Steel Construction,2008,1(3):13-17.)
[6]聂建国,王宇航.基于ABAQUS的钢-混凝土组合结构纤维梁模型的开发及应用[J].工程力学,2012,29(1):70-80.(Nie Jianguo,Wang Yuhang.Development and ap-plication of steel-concrete composite fiber beammodel in abaqus platform[J].Engineering Mechan-ics,2012,29(1):70-80.)
[7]蒋丽忠,余志武,曹华,等.剪力连接度对钢-混凝土组合梁抗震性能的影响[J].建筑结构,2008,38(3):52-54,120.(Jiang Lizhong,Yu Zhiwu,Cao Hua,et al.Effect ofshear connection degree on seismic resistant perform-ance of steel-concrete composite beams[J].BuildingStructure,2008,38(3):52-54,120.)
[8]薛伟辰,李杰,李昆.预应力钢-混凝土组合梁抗震性能试验研究[J].哈尔滨工业大学学报,2007,39(4):656-660.(Xue Weichen,Li Jie,Li Kun.Experimental studieson seismic performance of prestressed steel-concretecomposite beams[J].Journal of Harbin Institute ofTechnology,2007,39(4):656-660.)
[9]谭燕秋,王伟,武祥宝.钢-混凝土连续组合梁受力性能的有限元分析[J].钢结构,2009,24(2):20-22,48.(Tan Yanqiu,Wang Wei,Wu Xiangbao.The fem a-nalysis of the performance of continuous steel-con-crete composite beam[J].Steel Construction,2009,24(2):20-22,48.)
[10]杨有福,韩林海.矩形钢管自密实混凝土的钢管-混凝土界面粘结性能研究[J].工业建筑,2006,36(11):32-36.(Yang Youfu,Han Linhai.Research on bond behav-ior betw een steel and concrete of self-compactingconcrete filled steel tubes w ith rectangular sections[J].Industrial Construction,2006,36(11):32-36.)
[11]Li Hongnan,Li Bing.Study of a new macro-finite el-ement model for seismic performance of RC shearw alls using quasi-static experiments[J].Advances inStructural Engineering,2006,9(2):173-184.
[12]Andreadall A,Luigno D.Nonlinear behavior of ex-ternally prestressed composite beams:analytical mod-el[J].Journal of the Structural Division(ASCE),1998,124(5):588-597.
[13]Willibald S,Packer J A,Puthli R S.Experimentalstudy of bolted HSS flange-plate connections in axialtension[J].Journal of Structural Engineering,2002,128(3):328-336.
[14]Weng C C,Yen S I,Jiang M H.Experimental studyon shear splitting failure of full-scale composite con-crete encased steel beams[J].Journal of StructuralEngineering(ASCE),2002,128(9):1186-1194.
[15]杨坛.基于ANSYS的圆孔蜂窝钢梁承载力研究[D].广西:广西大学,2007.(Yang Tan.Based on ANSYS steel bearing capacityof the round hole honeycomb[D].Guangxi:GuangxiUniversity,2007.)
[16]苗林,陈德伟.考虑层间滑移效应的组合梁解析计算[J].同济大学学报:自然科学版,2011,39(8):1113-1119.(Miao Lin,Chen Dewei.Closed-form solution ofcomposite beam considering interfacial slip effects[J].Journal of Tongji University:Natural Science,2011,39(8):1113-1119.)
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