钢管约束混凝土纯弯构件抗弯力学性能研究
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摘要
采用有限元软件建模对钢管约束混凝土纯弯构件的荷载-变形关系进行了计算,计算结果分别得到了两个圆形及两个方形构件试验结果的验证。在此基础上,利用有限元方法对钢管约束混凝土纯弯构件受力过程中钢管及核心混凝土之间的相互作用以及构件的荷载-变形关系进行了分析,最后探讨了钢管约束混凝土纯弯构件抗弯承载力的实用计算方法。
The load versus deformation curves of steel tube confined concere members under pure bending are carried out using finite element analysis. The calculated results are verified by test results from two circular and two square specimens, and reasonable agreement is demonstrated. The finite element analysis modelling is then used to analyze the load versus deformation relationships, and to investigate the composite action between the steel tube and concrete core. A simple formula for calculating the ultimate strength of the composite members under pure bending is recommended.
The load versus deformation curves of steel tube confined concere members under pure bending are carried out using finite element analysis. The calculated results are verified by test results from two circular and two square specimens, and reasonable agreement is demonstrated. The finite element analysis modelling is then used to analyze the load versus deformation relationships, and to investigate the composite action between the steel tube and concrete core. A simple formula for calculating the ultimate strength of the composite members under pure bending is recommended.
引文
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[2]Han L H,Lu H,Yao G H,Liao F Y.Further study on the flexural behavior of concrete-filled steel tubes[J].Journal of Constructional Steel Research,2006,62(6):554―565.
[3]Lu Y Q,Kennedy D J L.The flexural behaviour of concrete-filled hollow structural sections[J].Canadian Journal of Civil Engineering,1994,21(1):111―130.
[4]杨有福,韩林海.矩形钢管混凝土构件抗弯力学性能的试验研究[J].地震工程与工程振动,2001,21(3):41―48.Yang Youfu,Han Linhai.Experimental studies on behavior of concrete-filled RHS members subjected to pure bending[J].Earthquake Engineering andEngingeering Vibration,2001,21(3):41―48.(in Chinese)
[5]Tomii M,Sakino K.Elasto-plastic behaviour of concrete filled square steel tubular beam-columns[J].Transactions of Architectural Institute of Japan,1979,280:111―120.
[6]蔡绍怀,顾万黎.钢管混凝土抗弯强度的试验研究[J].建筑结构,1985,15(3):28―29.Cai Shaohuai,Gu Wanli.Experimental study of bending strength of concrete filled steel tubular beam[J].Iournal of Building Structures.1985,15(3):28―29.(in Chinese)
[7]卢辉,韩林海.圆钢管混凝土抗弯刚度计算方法的探讨[J].工业建筑,2004,34(1):1―5.Lu Hui,Han Linhai.Calculations of flexural stiffness of concrete-filled steel tubes with circular sections[J].Industrial construction.2004,34(1):1―5.(in Chinese)
[8]Hibbitt,Karlson,Sorenson.ABAQUS version6.4:theory manual,users’manual,verification manual and example problems manual[M].Hibbitt,Karlson and Sorenson Inc.,2003.
[9]韩林海.钢管混凝土结构-理论与实践[M].北京:科学出版社,2007.Han Linhai.Concrete filled steel tubular structures[M].Beijing:China Science Press,2007.(in Chinese)
[10]沈聚敏,王传志,江见鲸.钢筋混凝土有限元与板壳极限分析[M].北京:清华大学出版社,1993.Shen Jumin,Wang Chuanzhi,Jiang Jianjing.Finite element method of reinforced concrete and limite analysis of plates and shells[M].Beijing:Tsinghua University Press,1993.(in Chinese)
[11]陈志波.钢管约束混凝土压弯构件力学性能研究[D].福州:福州大学,2006.Chen Zhibo.Behaviour of Steel Tube Confined Concrete Beam Column[D].Fuzhou:Fuzhou University,2006.(in Chinese)
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