基于弹塑性损伤单元的RC框架结构的全过程分析
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摘要
基于损伤力学和塑性理论建立了一种弹塑性损伤单元模型,并编制了基于此单元的RC平面框架非线性分析程序DAMAGE2D。算例表明,弹塑性损伤单元对RC框架非线性分析具有良好的精度。文中根据计算结果对RC框架结构进行了不同损伤阶段的划分。研究成果可用于基于pushover方法的结构抗震分析。
An elastic-plastic damage element is developed on the basis of the concepts of damage mechanics and plasticity theory.And DAMAGE2D is compiled for the nonlinear analysis of RC frame according to the damage element.Examples illustrate that the nonlinear analysis results of RC frame have a satisfactory precision by use of the elastic-plastic element.Furthermore,the frame structure is divided into different damage stages according to the calculation results.And the results can be applied to the seismic analysis based on pushover method.
An elastic-plastic damage element is developed on the basis of the concepts of damage mechanics and plasticity theory.And DAMAGE2D is compiled for the nonlinear analysis of RC frame according to the damage element.Examples illustrate that the nonlinear analysis results of RC frame have a satisfactory precision by use of the elastic-plastic element.Furthermore,the frame structure is divided into different damage stages according to the calculation results.And the results can be applied to the seismic analysis based on pushover method.
引文
[1]张我华,邱战洪,余功栓.地震荷载作用下坝及其岩基的脆性动力损伤分析[J].岩石力学与工程学报,2004,23(8):1311~1317.
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[5]PerdomoM E,RamíA,Flórez-López J.S imu lation of damage in RC fram es w ith variab le axial forces[J].Earthquake Eng.Struct.Dyn.1999,28:311~328.
[6]Flórez-López J.S implified model of un ilateral damage for RC fram es[J].J.Struct.Eng.ASCE 1995,121(12):1765~1772.
[7]刘阳冰,刘晶波.损伤梁单元及其在RC结构构件非线性分析中的应用[J].地震工程与工程振动,2004,24(2):95~100.
[8]Frank J.Vecch io,Moham ed Basil Emara.Shear deformations in reinforced concrete fram es[J].AC I Structure Journal,1992,89(1):46~56.
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[11]J.勒迈特.损伤力学教程[M].北京:科学出版社,1996.
[12]彭祝,王元汉,李廷芥.G riffith理论与岩爆的判别准则[J].岩石力学与工程学报,1996,15:491~495.
[13]李庆阳,关治,白峰杉.数值计算原理[M].北京:清华大学出版社,2000.
[2]Ju JW.On energy-based coupled elastoplastic damage theories:constitutive modeling and computational aspects[J].Int.J.Solids Struc-tures,1989,25(7):803~833.
[3]刘华.混凝土结构三维损伤开裂破坏全过程非线性有限元分析[J].工程力学,1999,16(2):45~51.
[4]C ipollina A,López-Inojosa A,Flórez-López J.A simplified damage m echan ics approach to non linear analysis of fram es[J].Computer&Structures,1995,54(6):1113~1126.
[5]PerdomoM E,RamíA,Flórez-López J.S imu lation of damage in RC fram es w ith variab le axial forces[J].Earthquake Eng.Struct.Dyn.1999,28:311~328.
[6]Flórez-López J.S implified model of un ilateral damage for RC fram es[J].J.Struct.Eng.ASCE 1995,121(12):1765~1772.
[7]刘阳冰,刘晶波.损伤梁单元及其在RC结构构件非线性分析中的应用[J].地震工程与工程振动,2004,24(2):95~100.
[8]Frank J.Vecch io,Moham ed Basil Emara.Shear deformations in reinforced concrete fram es[J].AC I Structure Journal,1992,89(1):46~56.
[9]徐芝纶.弹性力学简明教程[M].北京:高等教育出版社,2002.
[10]陈惠发,A.F.,萨里普.土木工程材料的本构方程[M].武汉:华中科技大学出版社,2001.
[11]J.勒迈特.损伤力学教程[M].北京:科学出版社,1996.
[12]彭祝,王元汉,李廷芥.G riffith理论与岩爆的判别准则[J].岩石力学与工程学报,1996,15:491~495.
[13]李庆阳,关治,白峰杉.数值计算原理[M].北京:清华大学出版社,2000.
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