节点刚域设置对钢筋混凝土框架结构抗震性能的影响
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摘要
在钢筋混凝土框架结构地震反应分析中,节点区域因具有相对较大的刚度而设置一定范围的刚域。刚域范围的设定对钢筋混凝土框架结构的地震反应和损伤发展历程具有明显的影响。文章采用基于柔度法的纤维有限元方法,考察了不同的刚域设置方法对结构地震反应和损伤发展的影响,并结合我国抗震设计的实际情况给出了相应的设计建议。
The ends of reinforced concrete(RC) frame members are often modeled with rigid zones in the seismic response analysis of RC frame structures,considering the relatively large stiffness of node panels.The seismic response and damage progress of RC frame structures are significantly influenced by the settings of rigid zones.In this paper,the effects of different setting methods for rigid zones are investigated by flexibility-based fiber finite element analysis,and advices are also proposed with the design practice in China taken into account.
The ends of reinforced concrete(RC) frame members are often modeled with rigid zones in the seismic response analysis of RC frame structures,considering the relatively large stiffness of node panels.The seismic response and damage progress of RC frame structures are significantly influenced by the settings of rigid zones.In this paper,the effects of different setting methods for rigid zones are investigated by flexibility-based fiber finite element analysis,and advices are also proposed with the design practice in China taken into account.
引文
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[5]曾铁梁,高洪波.钢筋混凝土框架的非线性分析[J].四川建筑科学研究,2007,33(1):28-31.
[6]张金轮,钱德玲,许小健.扁梁柱节点在低周往复荷载作用下的有限元分析[J].合肥工业大学学报:自然科学版,2008,31(2):225-228.
[7]Kaba S,Mahin S A.Refined modeling of reinforced concretecolumns for seismic analysis,EERC Report 84-03[R].Berkeley:Earthquake Engineering Research Center,Univer-sity of California,Berkeley,1984.
[8]Zeris C A,Mahin S A.Behavior of reinforced-concretestructures subjected to uniaxial excitation[J].Journal ofStructural Engineering,1991,117(9):2640-2656.
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[12]Menegotto M,Pinto P E.Method of analysis for cyclicallyloaded reinforced concrete plane frames including changesin geometry and non-elastic behavior of elements undercombined normal force and bending[C]//IABSE Symposi-um on Resistance and Ultimate Deformability of StructuresActed on by Well Defined Repeated Loads,Zurich,1973:112-123.
[2]JGJ 3-2002,高层建筑混凝土结构技术规程[S].
[3]Magliulo G,Ramasco R.Seismic response of three-dimen-sional r/c multi-storey frame building under uni-and bi-di-rectional input ground motion[J].Earthquake Engineering&Structural Dynamics,2007,36(12):1641-1657.
[4]Favvata M J,Izzuddin B A,Karayannis C G.Modelling ex-terior beam-column joints for seismic analysis of RC framestructures[J].Earthquake Engineering&Structural Dy-namics,2008,37(13):1527-1548..
[5]曾铁梁,高洪波.钢筋混凝土框架的非线性分析[J].四川建筑科学研究,2007,33(1):28-31.
[6]张金轮,钱德玲,许小健.扁梁柱节点在低周往复荷载作用下的有限元分析[J].合肥工业大学学报:自然科学版,2008,31(2):225-228.
[7]Kaba S,Mahin S A.Refined modeling of reinforced concretecolumns for seismic analysis,EERC Report 84-03[R].Berkeley:Earthquake Engineering Research Center,Univer-sity of California,Berkeley,1984.
[8]Zeris C A,Mahin S A.Behavior of reinforced-concretestructures subjected to uniaxial excitation[J].Journal ofStructural Engineering,1991,117(9):2640-2656.
[9]Filippou F C,Popov E P,Bertero V V.Analytical studies ofhysteretic behavior of R/C joints[J].Journal of StructuralEngineering,1986,112(7):1605-1622.
[10]Scott B D,Park R,Priestley M J N.Stress-strain behaviorof concrete confined by overlapping hoops at low and high-strain rates[J].Journal of the American Concrete Institu-te,1982,79(1):13-27.
[11]Kent D C,Park R.Flexural members with confined con-crete[J].Journal of the Structural Division,1971,97(7):1969-1990.
[12]Menegotto M,Pinto P E.Method of analysis for cyclicallyloaded reinforced concrete plane frames including changesin geometry and non-elastic behavior of elements undercombined normal force and bending[C]//IABSE Symposi-um on Resistance and Ultimate Deformability of StructuresActed on by Well Defined Repeated Loads,Zurich,1973:112-123.
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