摘要
为了研究节点域箱形加强式工字形柱盖板加强连接异形节点的抗震性能,采用有限元分析软件ABAQUS对节点域箱形加强式工字形柱标准型与盖板加强型异形节点进行循环加载模拟分析。结果表明,两种连接形式的节点域箱形加强式工字形柱异形节点破坏时均在梁端形成塑性铰,都具有良好的滞回性能及耗能能力,盖板加强型异形节点能够有效地实现塑性铰外移,满足"强节点弱构件"及"强节点域"的抗震设计要求;相比标准型异形节点,盖板加强型异形节点具有较高的承载力及初始抗侧刚度,但延性性能略低于标准型异形节点;节点域上、下核心区不作为整体协同工作。
This paper proposed a new box strengthened connection of I-shaped column. In order to study the seismic behavior of this special frame joints with cover-plate Based on the proposed joint, finite element analysis software ABAQUS is used to perform cyclic loading analysis for connections with standard beam end and cover-plate reinforced beam end. The results show the plastic hinge appears in the beam end when the two connections fail, and both connections have good hysteretic performance and energy dissipation capacity. The special frame joint with cover plate can move the plastic hinge away from the panel zone. This satisfies the seismic design principles of ＂strong joint and weak member＇ and ＇strong panel zone＇. Compared with the standard frame joint, the bearing capacity and initial stiffness of the cover- plate special frame joint are better, while the ductility performance of the cover-plate special frame joint is slightly lower than the former. The top and bottom panel zones do not work together.
出处
《建筑钢结构进展》
CSCD
北大核心
2017年第2期22-28,共7页
Progress in Steel Building Structures
基金
国家自然科学基金(51278061)
关键词
钢框架
节点域箱形加强式节点
有限元分析
异形节点
抗震性能
steel frame
box strengthen-joint region connection
finite dement analysis
irregular joint
seismic performance
