【作者】 徐莹璐； 李峰； 连鸣；

【Author】 XU Yinglu;LI Feng;LIAN Ming;School of Civil Engineering, Xi’an University of Architecture & Technology;Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education (XAUAT);

【机构】 西安建筑科技大学土木工程学院； 西安建筑科技大学结构工程与抗震教育部重点实验室；

【摘要】 针对传统钢框架梁柱弱轴连接中梁翼缘焊缝易于破坏的不足,对弱轴连接梁翼缘外侧设置竖向肋板加强,运用有限元软件ABAQUS对不同肋板加强形式的钢框架梁柱弱轴连接节点进行了循环荷载作用下的受力性能分析。结果表明,肋板加强型弱轴连接节点具有良好的滞回性能,可以实现梁上塑性铰外移至肋板末端,减小梁翼缘对接焊缝破坏的风险。单肋板或者肋板加强,以及肋板末端的梁腹板处是否设置竖向加劲肋对弱轴连接节点的滞回性能影响较小,建议采用未设置腹板竖向加劲肋的单肋板加强型节点。更多还原

【Abstract】 In view of the weakness of the traditional steel frame beam-to-column weak-axis connections that the beam flange welds are prone to fracture, the rib-reinforcement was adopted outside the beam flanges in the beam-to-column weak-axis connections. The finite element analysis ABAQUS was used to conduct the mechanical performance analysis on the different kinds of rib reinforced beam-to-column weak-axis connections in steel frame. Results showed that rib reinforced weak-axis connection had good cyclic performance, and could realize that the plastic hinge moved away to the end of ribs, and also reduced the fracture risk of beam flange but welds. Single or double rib reinforcements, and whether arrange vertical stiffeners at the beam web of rib end, have a little influence in the cyclic performance of weak-axis connection, and thus the single rib reinforced connection without web vertical stiffeners is suggested.更多还原