复式钢管混凝土梁柱节点抗震性能研究

复式钢管混凝土柱具有较高抗压承载力，在地震区不受轴压比限制，在大跨度桥梁中应用较多，可将其用于大跨度或超高层房屋建筑。为满足强节点弱杆件的抗震设计要求，设计了T型加劲板和加腋两种加强型连接方式对钢熙和柱外层钢板进行连接。利用有限元软件ANSYS对节点进行了单调加载和往复加载的抗震性能对比分析。结果表明：加强型节点承载力高，耗能能力较高，延性较好，且不会发生节点域的板件断裂，破坏时梁有很长的屈服平台，属于延性破坏，节点破坏时塑性铰外移，满足强节点弱杆件的抗震设计原则。

Seismic Behavior Study on Connections of Multibarrel Tube-confined Concrete Column with Steel Beam

The muhibarrel tube-confined concrete column has the behavior with high-strength, and especially avoids the limit of axial compression ratio, which has been widely used in large spatial bridge recently. This article suggest that it can be used for large-spacial or Ultra-high-rise buildings. In order to meet the necessity of the code for seismic design of buildings： Principle for strong connections and feebleness member, the external steel tube of column and steel beam are joined with three kinds of style, containing two strengthen styles-T-style stiffening plate and appending haunch. The conformation is simple and construct easily, which is analyzed by software ANSYS. The result reveals that the two strengthened connections has ultimate load, good ductility and better seismic behavior. There will be no Fracture of the board on the node domain. It has a very long yield platform when it broken which belonging to ductility damage. The plastic hinge relocates when nodes at the destruction state, which can satisfy the request of code for seismic design of buildings.