新型轻钢–混凝土组合结构节点试验研究及有限元分析

Experimental Investigation and Finite Element Analysis on the Behavior of New Light Steel-Concrete Composite Structure Joints

摘要: 基于薄壁方钢管混凝土柱与C型钢混凝土梁新型组合节点的低周反复荷载试验，选择适用合理的材料本构关系，通过有限元分析软件ABAQUS对新型节点进行循环往复荷载作用下的受力变形特性进行分析。有限元分析得出的新型节点应力应变矢量图较精确的反映出节点的破坏机理及过程，其荷载–位移曲线与试验结果对比分析表明该新型节点承载力较高，延性好，具有优越的耗能能力。

Abstract: Based on the experiments of new composite joint of thin-walled square concrete-filled steel tube column and c-steel beam under cycle loading, nonlinear finite element models were used to analyze the mechanical properties and deformation of new type of connections using ABAQUS. Based on appropriate material stress-strain relations, finite element analyses were conducted under cycle loading. A new type of joint stress-strain vector diagram by finite element analysis accurate shows failure mechanism and failure process of nodes. The comparison between the load-displa- cement curve and the test results shows that the new type of joint has high bearing capacity, good ductility and excellent energy dissipation capacity.