钢梁贯穿式方钢管砼梁柱节点滞回性能分析

针对以往钢管混凝土梁柱节点受力性能及应用中的缺陷,提出钢梁贯穿节点.通过ANYSYS有限元软件分析其单调荷载作用下的内力传递机理,循环荷载作用下的滞回性能、延性及耗能性能.结果表明:穿心节点有效地降低了钢管壁所受应力,提高了节点刚度,能实现"强柱弱梁"和塑性铰形成于节点区外的抗震设计理念;滞回曲线均为饱满的梭形,强度和刚度退化不明显.

Analysis of hysteretic performance of connections in concrete-filled SHS columns with through beam

Aimed at the shortcomings of concrete-filled SHS(square hollow section) column-beams with respect to their loading behavior and application,a new type of through beam connections model was presented.With the software of ANSYS,the inner force transfer mechanism with monotonous loading,hysteretic behavior,ductility,and energy dissipation of the connections under cyclic loading were analyzed.The result indicated that the stress in the through beam connections of steel pipe was reduced effectively,enhancing the rigidity of the joint.Meanwhile,the seismic design concepts of the strong column-weak beam and plastic hinge at the external area of the joint could be implemented.The hysteretic curves were of a plump shuttle shape.without obvious strength deterioration and stiffness degradation.