Experimental study on fatigue property of Q460 high-strength steel and its bolted connections

被引：0
|
作者：
Guo H. [1 ]
Huang Y. [1 ]
Liu Y. [1 ]
Jian Z. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Xi'an University of Technology, Xi'an
来源：
| 2018年 / Science Press卷 / 39期
关键词：
Cumulative damage factor; Fatigue limit; Fatigue test; Q460D high-strength steel; S[!sub]max[!/sub]-N curve; Stress concentration;
D O I：
10.14006/j.jzjgxb.2018.08.019
中图分类号：
学科分类号：
摘要：
In order to investigate the fatigue property of Q460D high-strength steel bolted connection, the fatigue tests were performed on Q460D high strength steel base metal, perforated plate and bolted connection. The Smax-N curves were fitted and compared with the related formula calculation values of code GB 50017-2003 and code ANSI/AISC 360-10. The results show that the fatigue tests data are generally discrete. Within the 95% confidence interval, the fitted Smax-N curves can reflect the fatigue life of the specimens under different stress amplitude with higher reliability. Due to high hardness of Q460D steel, the plastic deformability is poor and sensitive to defects. The stress concentration factors of the perforated plate and bolted connection are both over 2. The fatigue limit stress test values of base metal and perforated plate are respectively 2.01 and 1.45 times the related formula calculation values of code GB 50017 -2003, and 2.32 and 1.91 times the calculation values of code ANSI/AISC 360-10. And the fatigue limit stress test value of the bolt connection is slightly lower than the calculation value of code GB 50017-2003, but is 1.07 times the calculation value of code ANSI/AISC 360-10, indicating that code ANSI/AISC 360-10 is more suitable for evaluating the fatigue performance of the Q460D high strength steel bolted connection. © 2018, Editorial Office of Journal of Building Structures. All right reserved.
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页码：165 / 172
页数：7
相关论文
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