钢筋混凝土剪力墙二元件模型的有效性研究
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摘要
钢筋混凝土剪力墙是重要的抗侧力构件,在地震区的高层建筑中得到广泛的应用。由于细观有限元模型往往具有庞大的自由度,不便于进行数值分析,且在描述单元中非线性模式方面也存在许多困难,因此需要一种有效的模型来模拟其弯曲和剪切特性。文中利用二元件宏观模型来模拟钢筋混凝土剪力墙,然后对有关文献的剪力墙实验进行验证。所用模型可以合理模拟钢筋混凝土剪力墙的剪弯性能,分析结果与实验结果符合较好,为剪力墙的弹塑性时程分析提供了一种有效的方法。
The reinforced concrete wall is an important lateral load resisting element.It is widely used in high-rise building structures under earthquake actions.The finite element method involves many difficulties due both to the lack of completely reliable basic models and the complexities involved in a detailed solution.Also,the computation is generally very time-consuming and requires a large storage.As a result,an efficient model is needed for accurate representation of the flexural and shear behavior of these walls.In this paper,a two-spring macro wall element is used to simulate the wall characteristics.Elasto-plastic analysis of tested shear wall specimen was performed.The model is capable of idealizing both shear and flexural behaviors of reinforced concrete structural walls,and the analytical results are in close agreement with experimental measurements.This model can be effective to perform the elasto-plastic time-history analysis for shear walls.
The reinforced concrete wall is an important lateral load resisting element.It is widely used in high-rise building structures under earthquake actions.The finite element method involves many difficulties due both to the lack of completely reliable basic models and the complexities involved in a detailed solution.Also,the computation is generally very time-consuming and requires a large storage.As a result,an efficient model is needed for accurate representation of the flexural and shear behavior of these walls.In this paper,a two-spring macro wall element is used to simulate the wall characteristics.Elasto-plastic analysis of tested shear wall specimen was performed.The model is capable of idealizing both shear and flexural behaviors of reinforced concrete structural walls,and the analytical results are in close agreement with experimental measurements.This model can be effective to perform the elasto-plastic time-history analysis for shear walls.
引文
[1]张令心,孙景江,江近仁.钢筋混凝土剪力墙结构基于自平衡力的非线性地震反应分析[J].地震工程与工程振动,2001,21(4):29-34.
[2]孙景江,江近仁.框架-剪力墙型结构的非线性随机地震反应和可靠性分析[J].地震工程与工程振动,1992,12(2):59-68.
[3]崔大光.型钢混凝土梁柱框支剪力墙抗震性能研究[D].上海:同济大学,2006.
[4]郭子雄.基于变形的抗振设计理论及应用研究[D].上海:同济大学,2000.
[5]Vallenas J M,Bertero V V,Popov E P.HystereticBehavior of Reinforced Concrete Structural Walls[R].Earthquake Engineering Research Center,Universityof California,Berkeley,1979,Report No.UCB/EERC-79/20.
[6]Youssef Belmouden,Pierino Lestuzzi.Analytical modelfor predicting nonlinear reversed cyclic behaviour ofreinforced concrete structural walls[J].EngineeringStructures,2007,29(7):1263-1276.
[2]孙景江,江近仁.框架-剪力墙型结构的非线性随机地震反应和可靠性分析[J].地震工程与工程振动,1992,12(2):59-68.
[3]崔大光.型钢混凝土梁柱框支剪力墙抗震性能研究[D].上海:同济大学,2006.
[4]郭子雄.基于变形的抗振设计理论及应用研究[D].上海:同济大学,2000.
[5]Vallenas J M,Bertero V V,Popov E P.HystereticBehavior of Reinforced Concrete Structural Walls[R].Earthquake Engineering Research Center,Universityof California,Berkeley,1979,Report No.UCB/EERC-79/20.
[6]Youssef Belmouden,Pierino Lestuzzi.Analytical modelfor predicting nonlinear reversed cyclic behaviour ofreinforced concrete structural walls[J].EngineeringStructures,2007,29(7):1263-1276.
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