型钢混凝土框架结构梁柱节点有限元分析

Finite Element Analysis on Steel Reinforced Concrete Frame Joints

运用有限元软件ANSYS建立了型钢混凝土框架结构梁柱节点模型,并对其进行了计算分析,得到了节点模型的应力、应变及位移云图。通过对模型结果的对比与分析可知,混凝土和型钢的最大应力均大于各自的抗压强度,说明两者的破坏均属于材料破坏,且时间比较一致;混凝土的最大压应变达到其极限压应变,型钢的最大应变未达到其极限应变,表明混凝土进入了塑性阶段,而型钢依然处于弹性阶段;混凝土和型钢的位移基本一致,说明型钢混凝土框架结构的节点模型以混凝土和型钢作为一个整体进行模拟是比较合理的。

Using the finite element software ANSYS, this paper builds and analyzes the beam - column joint model of the steel reinforced concrete frame and acquires the stress, the strain and the displacement nephogram. Based on the comparison and analysis on the results, it shows that the maximum stresses of concrete and steel are larger than the respective compressive strength, meaning that both the damages belong to material damage and the time is about the same; the maximum compressive strain of concrete reaches its ultimate value and the maximum strain does not achieve the ultimate value, meaning that the concrete has entered the plastic stage but the steel is still in the elastic stage;the displacements of concrete and steel are basically the same, indicating that it is reasonable to simulate the node model of steel reinforced concrete frame structure with concrete and steel as a whole.