摘要
基于可恢复功能的抗震设计理念,提出了一种带有摩擦耗能组件的可更换钢梁柱拼接节点。该节点同时利用屈服和摩擦两种机制进行耗能,具有延性好、损伤可控及损伤后可更换等优点。设计制作了缩尺比为1∶1.5的2个可更换钢梁柱拼接节点和1个悬臂段螺栓连接钢梁柱节点试验模型,分别对其进行拟静力试验。对破坏后的2个可更换钢梁柱拼接节点试件进行修复,并进行二次加载,得到了节点试件在低周往复荷载作用下的滞回曲线、骨架曲线、刚度退化曲线、应变和位移曲线、延性及耗能等抗震性能指标。结果表明:提出的可更换钢梁柱拼接节点的延性及耗能能力均优于悬臂段螺栓连接钢梁柱节点;可更换钢梁柱拼接节点的塑性损伤主要集中在可更换构件上,而主体构件基本保持在弹性工作范围内;修复后的节点几乎完全恢复了抗震性能,满足可更换性的要求。
Based on the seismic design concept of recoverable function,a replaceable splicing steel beamcolumn joint with friction energy dissipation components is proposed in this paper.The joint uses both ductility and friction mechanisms for energy dissipation,which has the advantages of good ductility,controllable damage and replaceablility after damage.Two replaceable splicing steel beam-column joints specimen models and one cantilever bolted connection steel beam-column joint specimen model with the scale ratio of 1:1.5 were designed and manufactured.The quasi-static test method was used to conduct experimental research on these joint specimens.Two replaceable splicing steel beam-column joints after failure were repaired,and then they were reloaded.The seismic performance indexes of the joint specimens under low cyclic loading,such as hysteresis curve,skeleton curve,stiffness degradation curve,strain and displacement curve,ductility and energy dissipation were obtained.The results show that the ductility and energy dissipation capacity of the proposed replaceable splicing steel beam-column joint are better than that of the cantilever bolted connection steel beam-column joint.The plastic damage is mainly concentrated in the replaceable components,and the main components of the replaceable splicing steel beam-column joints are basically maintained in the elastic working range.The repaired joints can almost completely restore the seismic performance and meet the requirements of replaceability.
作者
刁延松
任义建
杨元强
赵凌云
刘秀丽
刘芸
DIAO Yan-song;REN Yi-jian;YANG Yuan-qiang;ZHAO Ling-yun;LIU Xiu-li;LIU Yun(School of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2024年第6期1643-1656,共14页
Journal of Jilin University:Engineering and Technology Edition
基金
山东省自然科学基金项目(ZR2021ME239,ZR2021ME033)。
关键词
结构工程
可恢复功能
可更换钢梁柱拼接节点
抗震性能
摩擦耗能
拟静力试验
structural engineering
recoverable function
replaceable splicing steel beam-column joint
seismic performance
friction energy consumption
quasi-static test
