钢筋混凝土双肢剪力墙非线性静力有限元分析
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摘要
利用有限元软件ABAQUS中的混凝土损伤塑性模型,采用分离式方法建立有限元模型,对钢筋混凝土双肢剪力墙进行了非线性分析;在与试验结果进行对比分析的基础上,选取了用于钢筋混凝土剪力墙非线性有限元分析的材料破坏准则和本构关系进行建模;通过数值计算,分析了轴压比、墙连梁跨高比、墙分布钢筋配筋率、边缘构件配筋率对钢筋混凝土双肢剪力墙的承载能力、延性、破坏形态等的影响。结果表明:轴压比、分布钢筋配筋率和连梁跨高比对钢筋混凝土双肢剪力墙的受力性能影响较为明显;边缘约束构件配筋率对墙体的影响较小。
Finite element software ABAQUS was used in a concrete damage plastic model,and the nonlinear finite element was adopted to analyze the reinforced concrete coupled shear walls,according to the separate finite element model.Based on the comparison analysis with test result,the material failure criterion and constitutive relations were selected for nonlinear finite element analysis of reinforced concrete coupled shear wall.Through the numerical calculations,the analysis also considered influences of design parameters,such as different axial compression ratios,reinforcement ratio of steel bars for wall distribution,marginal components stirrup ratio as well as span-depth ratio of coupling beam on bearing capacity,ductility,failure shape for reinforced concrete coupled shear walls.The results indicate that the factors that axial compression ratio,reinforcement ratio of steel bars,span-depth ratio of coupling beam significantly affect the mechanical behavior of reinforced concrete coupled shear walls,and the different reinforcement ratios of constraint component have little influence for wall.
Finite element software ABAQUS was used in a concrete damage plastic model,and the nonlinear finite element was adopted to analyze the reinforced concrete coupled shear walls,according to the separate finite element model.Based on the comparison analysis with test result,the material failure criterion and constitutive relations were selected for nonlinear finite element analysis of reinforced concrete coupled shear wall.Through the numerical calculations,the analysis also considered influences of design parameters,such as different axial compression ratios,reinforcement ratio of steel bars for wall distribution,marginal components stirrup ratio as well as span-depth ratio of coupling beam on bearing capacity,ductility,failure shape for reinforced concrete coupled shear walls.The results indicate that the factors that axial compression ratio,reinforcement ratio of steel bars,span-depth ratio of coupling beam significantly affect the mechanical behavior of reinforced concrete coupled shear walls,and the different reinforcement ratios of constraint component have little influence for wall.
引文
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[8]曹国辉,方志.钢筋混凝土连续宽箱梁受力性能试验[J].中国公路学报,2006,19(5):46-52.CAO Guo-hui,FANG Zhi.Mechanical Behaviors Testof RC Continuous Box Girder with Wide Flange[J].China Journal of Highway and Transport,2006,19(5):46-52.
[2]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.GUO Zhen-hai,SHI Xu-dong.Reinforced ConcreteTheory and Analysis[M].Beijing:Tsinghua UniversityPress,2003.
[3]吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用[M].上海:同济大学出版社,1997.LU Xi-lin,JIN Guo-fang,WU Xiao-han.The Theoryand Application of the Nonlinear Finite Element forReinforced Concrete[M].Shanghai:Tongji UniversityPress,1997.
[4]王金昌,陈页开.ABAQUS在土木工程中的应用[M].杭州:浙江大学出版社,2006.WANG Jin-chang,CHEN Ye-kai.Application ofABAQUS in Civil Engineering[M].Hangzhou:Zhe-jiang University Press,2006.
[5]曹万林,董宏英,胡国振,等.不同暗支撑型式的带暗支撑双肢剪力墙抗震性能试验研究[J].土木工程学报,2005,38(8):18-25.CAO Wan-lin,DONG Hong-ying,HU Guo-zhen,et al.An Experimental Study on the Seismic Behavior of RCCoupled Shear Walls with Concealed Bracings of Dif-ferent Styles[J].China Civil Engineering Journal,2005,38(8):18-25.
[6]庄茁,张帆,岑松.ABAQUS非线性有限元分析与实例[M].北京:科学出版社,2005.ZHUANG Zhuo,ZHANG Fan,CEN Song.Analysisand Example of ABAQUS Nonlinear Finite Element[M].Beijing:Science Press,2005.
[7]沈蒲生,刘杨.水平地震作用下框支剪力墙结构的变形研究[J].建筑科学与工程学报,2005,22(1):58-63.SHEN Pu-sheng,LIU Yang.Distortion Research ofShear Wall Structure Supported on Frame UnderEarthquake Actions[J].Journal of Architecture andCivil Engineering,2005,22(1):58-63.
[8]曹国辉,方志.钢筋混凝土连续宽箱梁受力性能试验[J].中国公路学报,2006,19(5):46-52.CAO Guo-hui,FANG Zhi.Mechanical Behaviors Testof RC Continuous Box Girder with Wide Flange[J].China Journal of Highway and Transport,2006,19(5):46-52.
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