方形钢管混凝土叠合柱的力学性能研究
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摘要
建立了方形钢管混凝土叠合柱的非线性有限元模型,对其在往复荷载作用下的滞回性能进行了数值模拟。有限元模型考虑了反复荷载作用下混凝土的损伤、构件的几何非线性以及钢筋和内钢管与混凝土之间的粘结滑移。算例分析结果表明,有限元计算和试验结果总体上吻合良好。采用有限元模型对方形钢管混凝土叠合柱在轴压力和侧向力共同作用下的工作机理进行了细致分析。
This paper developed a nonlinear finite element modelling (FEM) to simulate concrete-filled steelube reinforced concrete column with square section under cyclic loading.In the FEM,the cumulative damage of concrete under a reverse loading,nonlinear geometric behaviour,bonding-slip between steel bars or steel tube and concrete were considered.A good agreement was obtained between the experimental results and the predictions based on the FEM.By using the FEM,the mechanism of the composite column under the combined axial compression and cyclic lateral loading was analyzed.
引文
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