H型钢梁-柱节点火灾后力学性能试验及有限元分析

刘链波; 周明; 王新堂

doi:10.13204/j.gyjzG22092306

H型钢梁-柱节点火灾后力学性能试验及有限元分析

doi: 10.13204/j.gyjzG22092306

1. 宁波大学科学技术学院建筑工程学院, 浙江宁波 315300;
2. 宁波工程学院建筑与交通工程学院, 浙江宁波 315210

基金项目:

浙江省基础公益研究计划项目（LGF21E080005）；浙江省住房和城乡建设厅项目（2020K147）；宁波市建设科研计划项目。

详细信息

作者简介:
刘链波,男,1988年出生,硕士,讲师。电子信箱:452812178@qq.com

计量
- 文章访问数: 80
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- PDF下载量: 5
- 被引次数: 0
出版历程
- 收稿日期: 2022-09-23
- 网络出版日期: 2023-03-22

Mechanical Property Experiments and Finite Element Analysis of Joints Between H-Steel Beams and Columns After Fire

1. Faculty of Architectural Engineering, College of Science & Technology, Ningbo University, Ningbo 315300, China;
2. School of Civil Transportation Engineering, Ningbo University of Technology, Ningbo 315210, China

摘要

摘要: 通过对3组火灾后H型钢梁-柱节点进行低周往复加载试验及有限元分析，得到节点M-θ滞回曲线及M-θ骨架曲线，并分析了试件的承载力、刚度退化、延性及耗能能力的变化情况。试验表明：受火后螺栓的性能损伤会导致节点的初始刚度降低；受火后节点螺栓的更换可以提高节点的延性、耗能能力及节点刚度，但对极限承载力影响不大；受火时柱子轴压比越大，火灾后节点承载力、延性、耗能能力及初始刚度越低；对节点采取防护措施可以提高火灾后节点的承载力及延性。
- H型钢梁-柱节点 /
- 低周往复加载 /
- 有限元分析 /
- 耗能能力 /
- 火灾后承载力
Abstract: The quasi-static loading test and finite element analysis on three groups of joints between H-steel beams and columns after fire were conducted, M-θ hysteretic curves and M-θ skeleton curves were obtained, and the changes of the bearing capacity, stiffness degeneration, ductility and energy dissipation capacity for specimens were analyzed. The results showed that performance damage of bolts after fire caused degeneration of initial stiffness for joints; replacement of joint bolts after fire could improve the ductility, energy dissipation capacity and the stiffness of joints, but had little effect on the ultimate bearing capacity. The larger the axial compression ratio of column subjected to fire, the lower the bearing capacity, ductility, energy dissipation capacity and initial stiffness of the joint after fire; the protection measures of joints could improve the bearing capacity and ductility of joints after fire.
- joints between H-steel beams and columns /
- quasi-static loading /
- finite element analysis /
- energy dissipation capacity /
- bearing capacity after fire

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参考文献(11)

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