钢管自密实再生混凝土柱有限元分析  

Finite Element Analysis of Steel Tube Self Compacting Recycled Concrete Short Column

作　　者：康子恒 杜喜凯[1,2] 王森林[1,2] KANG Ziheng;DU Xikai;WANG Senlin(l.Structural Laboratory of Hebei Agricultural University,Baoding 071000,China;Structural Engineering Department of Hebei Agricultural University,Baoding 071000,China)

机构地区：[1]河北农业大学结构实验室,保定071000 [2]河北农业大学结构工程系,保定071000

出　　处：《结构工程师》2021年第3期19-26,共8页Structural Engineers

摘　　要：在前期已进行的15根钢管自密实再生混凝土短柱轴压、偏压和11根钢管再生混凝土长柱轴压试验的基础上,通过ABAQUS有限元建模,验证模型的有效性,并且改变试件参数建立新模型,分析模型在不同长细比、钢材强度、偏心距下的受力性能。将模型试验值同规范值进行比较得到参数θ,把参数θ引入规范GB 50936-2014给出的方钢管混凝土轴压承载力计算公式进行修正。结果表明,修正后的计算公式精确程度高,偏于安全,可用于承载力计算。On the basis of the tests of 15 steel tube self compacting recycled concrete short columns and 11 steel tube recycled concrete long columns,the validity of the model was verified by ABAQUS finite element modeling.The new model was established by changing the parameters of the test pieces.The mechanical properties of the model under different slenderness ratio,steel strength and eccentricity were analyzed.The parameter θ was obtained by comparing the model test value with the code value.The parameter θ was introduced into the calculation formula of bearing capacity of concrete filled square steel tube given in GB 509362014 for correction.The results show that the corrected calculation formula was accurate and safe and it could be used for bearing capacity calculation.

关 键 词：钢管 自密实再生混凝土 短柱 有限元分析 承载力计算 修正系数 

分 类 号：TU398.9[建筑科学—结构工程]