地震作用下高拱坝损伤开裂分析
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摘要
采用应变率相关的砼非线性损伤模型模拟拱坝横缝,研究了砼非线性本构情况下整体拱坝与考虑分缝拱坝的应力响应和损伤开裂的特点与差别。对实际拱坝的地震响应分析表明,基于非线性砼模型的整体拱坝动力响应模型可以基本反映拱坝的实际应力分布情况。
The contraction joints have to be modeled if the open-close effects of joints on the dynamic response of high arch dam are studied. Based on the strain rate-dependant damage constitutive model, the dynamic response and the damage characteristics are studied for the arch dam model with and without considering the opening-closing effects of joints. The analysis show that arch dam model without modeling contraction joints can give reasonable dynamic response results based on the nonlinear concrete model.
The contraction joints have to be modeled if the open-close effects of joints on the dynamic response of high arch dam are studied. Based on the strain rate-dependant damage constitutive model, the dynamic response and the damage characteristics are studied for the arch dam model with and without considering the opening-closing effects of joints. The analysis show that arch dam model without modeling contraction joints can give reasonable dynamic response results based on the nonlinear concrete model.
引文
[1]赵兰浩,李同春,牛志伟.考虑库水可压缩性的高拱坝动力特性分析[J].水电能源科学,2008,263):95-97.
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[3]Malika Azmi,Patrick Paultre.Three-dimensional analysis of concrete dams including contraction joint non-linearity[J].Engineering Structure,2002,24:757-771.
[4]钟红.高拱坝地震损伤开裂的大型数值模拟[D].大连:大连理工大学,2008.
[5]郭永刚,孙五继,刘宪亮.高拱坝伸缩横缝间布设抗震钢筋的动力反应分析[J].应用力学学报,2007,24(1):16-21.
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[7]Bathe K J,Chacdhary A.A solution method for static and dynamic analysis of three-dimensional contact problems with friction[J].Computer&Structures,1996,24(6):855-873.
[8]Faria R,Oliver J,Cervera M.A strain-based plastic viscous-damage model for massive concrete struc-tures[J].Solids Structures,1998,35(14):1533-1558.
[9]李庆斌,张楚汉,王光纶.单轴状态下混凝土的动力损伤本构模型[J].水利学报,1994,12:55-60.
[10]Villiappan S,Yazdchi M.Seismic anslysis of arch dams-a continuum damage mechanics approach[J].Numer Mech Engng,1999,45:1685-1724.
[2]杜建国,林皋,胡志强.非均质无限地基上高拱坝的动力响应分析[J].岩石力学与工程学报,2006,25(增刊):4105-110.
[3]Malika Azmi,Patrick Paultre.Three-dimensional analysis of concrete dams including contraction joint non-linearity[J].Engineering Structure,2002,24:757-771.
[4]钟红.高拱坝地震损伤开裂的大型数值模拟[D].大连:大连理工大学,2008.
[5]郭永刚,孙五继,刘宪亮.高拱坝伸缩横缝间布设抗震钢筋的动力反应分析[J].应用力学学报,2007,24(1):16-21.
[6]Ahmadi M T,Izadinia M,Bachmann H.A discrete crack joint model for nonlinear dynamic analysis of concrete arch dam[J].Computers and Structures,2001,79:403-420.
[7]Bathe K J,Chacdhary A.A solution method for static and dynamic analysis of three-dimensional contact problems with friction[J].Computer&Structures,1996,24(6):855-873.
[8]Faria R,Oliver J,Cervera M.A strain-based plastic viscous-damage model for massive concrete struc-tures[J].Solids Structures,1998,35(14):1533-1558.
[9]李庆斌,张楚汉,王光纶.单轴状态下混凝土的动力损伤本构模型[J].水利学报,1994,12:55-60.
[10]Villiappan S,Yazdchi M.Seismic anslysis of arch dams-a continuum damage mechanics approach[J].Numer Mech Engng,1999,45:1685-1724.
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