框填结构等效斜压杆的模型改进及其数值模拟
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摘要
等效斜压杆理论是模拟混凝土框架填充墙的常用方法之一.为探索该理论在结构抗震动力时程分析模拟中的应用,基于有限元软件ABAQUS,针对某一多层框架砌体填充墙结构案例,建立梁杆单元模型.模型中运用改进后的等效斜压杆宽度计算公式,来定义交叉杆的截面属性,并通过子程序建立材料的非线性本构关系.通过该模型系统分析了其在地震作用下的动力时程响应,并进行了比较研究.计算结果表明,使用等效斜压杆理论对实际框架填充墙进行模拟是可靠的,可以为工程设计提供参考依据.
Equivalent diagonal strut theory is one of the commonly used methods that are applied to simulate the masonry wall-infilled reinforced concrete(RC) frame. In order to explore the theory application in numerical simulation of actual structures, the finite element analysis software ABAQUS was employed to study the response of one actual case under the action of earthquake. The improved width formula of equivalent diagonal strut was incorporated in the model, and the nonlinear constitutive relation of material was established through the subroutines. The results show that the modified model using equivalent diagonal strut theory to simulate actual infilled RC frame structure is reasonable and feasible, which can provide a reference for the design of engineering structure.
Equivalent diagonal strut theory is one of the commonly used methods that are applied to simulate the masonry wall-infilled reinforced concrete(RC) frame. In order to explore the theory application in numerical simulation of actual structures, the finite element analysis software ABAQUS was employed to study the response of one actual case under the action of earthquake. The improved width formula of equivalent diagonal strut was incorporated in the model, and the nonlinear constitutive relation of material was established through the subroutines. The results show that the modified model using equivalent diagonal strut theory to simulate actual infilled RC frame structure is reasonable and feasible, which can provide a reference for the design of engineering structure.
引文
[1]李建中,吕西林,李翔,等.汶川地震中钢筋混凝土框架结构的震害[J].结构工程师,2008,24(3):9-11.
[2]POLYAKOV S V.Masonry in framed buildings[M].CAIRNS G L.Boston Spa:National Lending Library,1956.
[3]LIAUW T C,KWAN K H.Nonlinear behaviour of non-integral infilled frames[J].Computers and Structures,1984,18(3):551-560.
[4]CAVALERI L,PAPIA M.A new dynamic identification technique:application to the evaluation of the equivalent strut for infilled frames[J].Engineering Structures,2003,25(7):889-901.
[5]LIAUW T C,KWAN K H.Plastic theory of infilled frames with finite interface shear strength[C]//Proceedings of the Institution of Civil Engineers,1983,75:707-723.
[6]ASTERIS P G,ANTONIOU S T,SOPHIANOPOULOS D S,et al.Mathematical macromodeling of infilled frames:state of the art[J].Journal of Structural Engineering,2011,137(12):1508-1517.
[7]CRISAFULLI F J.Seismic behaviour of reinforced concrete structures with masonry infills[D].New Zealand:University of Canterbury,1997.
[8]UVA G,RAFFAELE D,PORCO F,et al.On the role of equivalent strut models in the seismic assessment of infilled RC buildings[J].Engineering Structures,2012,42:83-94.
[9]高润东,蒋利学,王春江,等.基于等效斜压杆理论的RC框架填充墙承载力计算方法研究[J].结构工程师,2015.
[10]蒋利学,郑乔文.砖填充墙加固前后钢筋混凝土框架抗震性能试验[J].工业建筑,2009,10:40-47.
[11]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
[12]彭志涵.钢筋混凝土高层框架结构抗震性能研究[D].广州:华南理工大学,2012.
[13]刘桂秋.砌体结构基本受力性能的研究[D].长沙:湖南大学,2005.
[14]张劲,王庆扬,胡守营,等.ABAQUS混凝土损伤塑性模型参数验证[J].建筑结构,2008,08:127-130.
[2]POLYAKOV S V.Masonry in framed buildings[M].CAIRNS G L.Boston Spa:National Lending Library,1956.
[3]LIAUW T C,KWAN K H.Nonlinear behaviour of non-integral infilled frames[J].Computers and Structures,1984,18(3):551-560.
[4]CAVALERI L,PAPIA M.A new dynamic identification technique:application to the evaluation of the equivalent strut for infilled frames[J].Engineering Structures,2003,25(7):889-901.
[5]LIAUW T C,KWAN K H.Plastic theory of infilled frames with finite interface shear strength[C]//Proceedings of the Institution of Civil Engineers,1983,75:707-723.
[6]ASTERIS P G,ANTONIOU S T,SOPHIANOPOULOS D S,et al.Mathematical macromodeling of infilled frames:state of the art[J].Journal of Structural Engineering,2011,137(12):1508-1517.
[7]CRISAFULLI F J.Seismic behaviour of reinforced concrete structures with masonry infills[D].New Zealand:University of Canterbury,1997.
[8]UVA G,RAFFAELE D,PORCO F,et al.On the role of equivalent strut models in the seismic assessment of infilled RC buildings[J].Engineering Structures,2012,42:83-94.
[9]高润东,蒋利学,王春江,等.基于等效斜压杆理论的RC框架填充墙承载力计算方法研究[J].结构工程师,2015.
[10]蒋利学,郑乔文.砖填充墙加固前后钢筋混凝土框架抗震性能试验[J].工业建筑,2009,10:40-47.
[11]江见鲸,陆新征,叶列平.混凝土结构有限元分析[M].北京:清华大学出版社,2005.
[12]彭志涵.钢筋混凝土高层框架结构抗震性能研究[D].广州:华南理工大学,2012.
[13]刘桂秋.砌体结构基本受力性能的研究[D].长沙:湖南大学,2005.
[14]张劲,王庆扬,胡守营,等.ABAQUS混凝土损伤塑性模型参数验证[J].建筑结构,2008,08:127-130.
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