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: 79
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- 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)

[1]	王卫永, 冉甜, 逯鹏, 等.钢结构梁柱节点抗火性能研究进展与展望[J].防灾减灾工程学报, 2021, 41(4):837-849.
[2]	舒赣平, 杜二峰, 张欣欣, 等.T型钢连接梁柱节点抗火性能试验研究[J].工程力学, 2016, 33(7):136-143.
[3]	金秀莲, 周明, 王新堂, 等.梁端约束H形钢梁-柱节点的火灾响应研究[J].空间结构, 2019, 25(3):72-79.
[4]	代东亮.钢结构半刚性连接节点抗火性能有限元分析[D].郑州:河南科技大学, 2012.
[5]	王卫永, 董毓利, 李国强.外伸端板节点火灾行为的试验研究和理论分析[J].哈尔滨工业大学学报, 2006(12):2125-2128.
[6]	李俊华, 马超, 陈建华, 等.火灾后型钢混凝土柱-钢梁节点抗震性能试验研究[J].防灾减灾工程学报, 2015, 35(1):51-56.
[7]	AL-JABRI K S, LENNON T, BURGESS I W, et al. Behaviour of steel and composite beam-column connections in fire[J]. Journal of Constructional Steel Research, 1998, 46(1/2/3):308-309.
[8]	AL-JABRI K S, BURGESS I W, LENNON T, et al. Moment-rotation-temperature curves for semi-rigid joints[J]. Journal of Constructional Steel Research, 2005, 61(3):281-303.
[9]	QIANG X H, BIJLAARD F S K, KOLSTEIN M H, et al. Behaviour of beam-to-column high strength steel end plate connections under fire conditions-part 1:experimental study[J]. Engineering Structures, 2014, 64:23-38.
[10]	QIANG X H, JIANG X, BIJLAARD F S K, et al. Behaviour of beam-to-column high strength steel endplate connections under fire conditions-part 2:numerical study[J]. Journal of Constructional Steel Research, 2014, 64:39-51.
[11]	ELSAWAF S, WANG Y C. Behaviour of restrained structyral subassem-blies of steel beam to CFT column in fire during cooling stage[J]. Engineering Structures, 2013, 46:471-492.