方钢管混凝土柱—组合扁梁连接节点力学性能研究

将方钢管混凝土柱与组合扁梁结合，构成一种新型、高效的住宅钢结构体系。在已有节点研究的基础上，结合翼缘非对称式组合扁梁的特殊性，提出了一种新的节点构造形式。建立了节点承载力计算的塑性铰线模型，推导了塑性铰线的承载力，得到了受拉翼缘的极限拉力，并最终确定了节点的承载力计算方法。为验证上述模型的准确性，对节点进行了有限元分析。塑性铰线模型与有限元分析结果吻合良好，设计方法可供工程设计参考。

Mechanical Behavior of Connections between CFT Columns and Composite Slim Floor Beams

A new kind of composite structure system composing of CFT columns and Composite slim-floor beams was put forward,which has much efficiency.Based on the research work of CFT column-steel beam joint,a new type of connections was proposed,considering the specification of the composite beam with an un-symmetry section.A simplified calculation method was also given,in which plastic hinge line model was used.After determining the ultimate tension force of the tension flange,moment capacity of the joint was calculated in a simplified way.FEM method was used to verify the accuracy of the method mentioned above.The results of the two methods show a good agreement.The design method can also give a reference for the similar structures.