带支撑的钢框架梁柱节点的力学性能研究

针对钢框架腹板双角钢梁柱半刚性节点连接受力复杂、强度和刚度影响因素多等问题,应用非线性有限元软件ANSYS对带有支撑和无支撑的这种半刚性节点进行了数值模拟,分析比较了支撑对梁柱节点区域应力分布的影响,应力应变分布特征以及承载力的变化。结果表明:钢框架腹板双角钢梁柱半刚性节点加上支撑后,较大幅度的提高了节点的刚度和承载力,有效的转移了塑性铰,反复荷载作用下的滞回曲线更加饱满,拥有更好的抗震性能。

Performance Research on Beam-column Joints of Steel Framed Structures with Supports

For double web angle beam-column’s semi-rigidity joint of steel framed structure,the mechanical behavior and connection is very complex,and there are many influencing factors for its strength and rigidity.ANSYS finite element analysis software is used to analyze and simulate the beam-column’s semi-rigidity joint of the steel framed structure with supports or not.The different stress distributions of the beam-column joint area,the stress and strain’s distribution characteristics and the bearing capacity are analyzed and compared.The results show that for the double web angle beam-column’s semi-rigidity joint with supports the joint’s rigidity and bearing capacity have a large range increment,the plastic hinge is transferred effectively and hysteresis curve display more fully under the cyclic reverse loading,which have better hysteresis performance.