Experimental Research on Slip Factors of Corroded Slip-Critical Weathering High-Strength Bolted Connections

LAN Tao; LI Zexu; ZHANG Boya; GAO Ruixiang; YOU Yong

doi:10.13204/j.gyjzG23080410

Volume 53 Issue 9

Sep. 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(9): 95-103

LAN Tao, LI Zexu, ZHANG Boya, GAO Ruixiang, YOU Yong. Experimental Research on Slip Factors of Corroded Slip-Critical Weathering High-Strength Bolted Connections[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(9): 95-103. doi: 10.13204/j.gyjzG23080410

Citation:

LAN Tao, LI Zexu, ZHANG Boya, GAO Ruixiang, YOU Yong. Experimental Research on Slip Factors of Corroded Slip-Critical Weathering High-Strength Bolted Connections[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(9): 95-103. doi: 10.13204/j.gyjzG23080410

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Experimental Research on Slip Factors of Corroded Slip-Critical Weathering High-Strength Bolted Connections

doi: 10.13204/j.gyjzG23080410

LAN Tao^1,3,
LI Zexu^{1
,
,},
ZHANG Boya²,
GAO Ruixiang¹,
YOU Yong³

1. CSSC International Engineering Co., Ltd., Beijing 100121, China;
2. Sichuan Provincial Architectural Design and Research Institute Co., Ltd., Chengdu 610041, China;
3. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

Received Date: 2023-08-04
Available Online: 2023-11-08

Abstract

Abstract

To study the effect of corrosion on the slip factors of weathering high-strength bolts, the slip factor tests under different corrosion times were conducted on 23 high-strength bolted connecting specimens cleaned by sandblasting and manual cleaning. The test includes 10 specimens composed of Q355GNH weathering steel and NHL10 weathering high-strength bolts, 10 specimens composed of Q355B ordinary steel and NHL10 weathering high-strength bolts, and 3 specimens composed of Q355GNH weathering steel and ML20MnTiB ordinary high-strength bolts. The effects of different surface treatments and materials on the slip factors of weathering high-strength bolted connections were studied. The test results showed that the surface treatment had no noticeable effect on the corrosion rate and speed of the steel plates; the bearing capacity of the weathering high-strength bolted connecting specimens after sandblasting was higher, and the slip factors were more stable; for the connecting specimens composed of weathering steel plates and ordinary high-strength bolts, due to the existence of corrosion potential difference, the time for the corrosion rate of weathering steel plates to stabilize was prolonged; at the same corrosion time, the slip factors of the specimens composed weathering steel plate and weathering high-strength bolts were less affected by corrosion, so the specimens would be more suitable for severe corrosion environments.
- weathering steel,
- weathering high-strength bolt,
- connecting specimens,
- salt spray corrosion test,
- slip factor

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References(13)

References

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