摘要
为有效解决钢框架梁柱节点焊接处脆性破坏问题,提出了一种新型内套筒装配式梁柱节点连接形式,其主要由八边形内套筒连接件、槽钢及加劲L型连接件对上下柱体和钢梁进行装配式全螺栓连接.通过ABAQUS有限元软件对新型节点静力性能及抗震性能进行数值模拟,深入研究节点单调荷载作用下的承载能力、破坏模式及循环荷载作用下的滞回性能,并分析八边形内套筒、槽钢及加劲L型连接件厚度对节点承载能力的影响.结果表明:三者厚度的增加可以有效提高节点初始刚度及承载能力,其中加劲L型连接件厚度的影响更为显著;新型节点滞回曲线整体较为饱满,骨架曲线极限转角为0.091rad,远大于美国标准FEMA的0.03rad,具有优越的承载能力与抗震性能.研究结果可为钢框架梁柱连接节点结构体系的工程实际应用提供参考.
In order to effectively solve the problems of brittle failure at the welding point of steel frame beam-column joints,a new type of inner sleeve assembly beam-column connection joint is proposed,which is mainly assembled with full bolted connection by an octagonal inner sleeve connector,channel steel and a stiffened L-type connector for the upper and lower columns and steel beams.In this paper,the static performance and seismic performance of the new joint are numerically simulated by ABAQUS finite element software.The bearing capacity,failure mode under monotonic loading and hysteretic performance under cyclic loading are studied in depth,and the influence of the thickness of octagonal inner sleeve,channel steel and stiffened L-type connector on the bearing capacity of the joint is analyzed.The results show that the increase of the thickness of the three can effectively improve the initial stiffness and bearing capacity of the joint,and the influence of the thickness of the stiffened L-type connector is more obvious.The hysteretic curve of the new joint is full,and the ultimate rotation angle of the skeleton curve is 0.091 rad,which is much larger than the 0.03 rad of the American standard FEMA,the new joint has excellent bearing capacity and seismic performance.It provides a reference for the engineering application of the steel frame beam-column connection structure system.
作者
操礼林
虞振云
陆春华
CAO Lilin;YU Zhenyun;LU Chunhua(Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,China)
出处
《江苏科技大学学报（自然科学版）》
CAS
北大核心
2022年第4期106-113,共8页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
基金
国家自然科学基金资助项目(51878319,51408267)。
关键词
梁柱节点
力学性能
有限元模拟
破坏模式
参数分析
beam-column joint
mechanical properties
finite element simulation
failure mode
parameter analysis
