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Article

Paint Coating Removal by Heating for High-Strength Bolted Joints in Steel Bridge and Its Influence on Bolt Axial Force

1
Japan Bridge Corporation, Kobe 650-0023, Japan
2
Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
3
Sumitomo Osaka Cement Co., Ltd., Osaka 551-0021, Japan
4
Furuichi Co., Ltd., Osaka 565-0832, Japan
*
Author to whom correspondence should be addressed.
Appl. Mech. 2021, 2(4), 728-738; https://doi.org/10.3390/applmech2040042
Submission received: 12 August 2021 / Revised: 22 September 2021 / Accepted: 26 September 2021 / Published: 30 September 2021
(This article belongs to the Special Issue Mechanical Design Technologies for Beam, Plate and Shell Structures)

Abstract

A series of experiments were carried out for developing a paint coating removal method for high-strength bolted joints in steel bridges. The paint-coated bolted joint specimens were heated to the target temperature of 200 °C by using a sheet-type ceramic heater. The maximum temperature of specimens could be controlled within 10% of the target value. The paint coating was easily removed by using general tools after heating. The behaviour of bolts with thermal expansion and shrinkage was monitored by strain gauges attached to the bolts during heating. It was estimated that the axial forces of the bolts were reduced by 2.6% of the initially installed axial forces, on average.
Keywords: steel bridge; bolted joints; paint coating; heating; bolt axial force steel bridge; bolted joints; paint coating; heating; bolt axial force

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MDPI and ACS Style

Nakahara, T.; Hirohata, M.; Kondo, S.; Furuichi, T. Paint Coating Removal by Heating for High-Strength Bolted Joints in Steel Bridge and Its Influence on Bolt Axial Force. Appl. Mech. 2021, 2, 728-738. https://doi.org/10.3390/applmech2040042

AMA Style

Nakahara T, Hirohata M, Kondo S, Furuichi T. Paint Coating Removal by Heating for High-Strength Bolted Joints in Steel Bridge and Its Influence on Bolt Axial Force. Applied Mechanics. 2021; 2(4):728-738. https://doi.org/10.3390/applmech2040042

Chicago/Turabian Style

Nakahara, Tomonori, Mikihito Hirohata, Shinsuke Kondo, and Toru Furuichi. 2021. "Paint Coating Removal by Heating for High-Strength Bolted Joints in Steel Bridge and Its Influence on Bolt Axial Force" Applied Mechanics 2, no. 4: 728-738. https://doi.org/10.3390/applmech2040042

APA Style

Nakahara, T., Hirohata, M., Kondo, S., & Furuichi, T. (2021). Paint Coating Removal by Heating for High-Strength Bolted Joints in Steel Bridge and Its Influence on Bolt Axial Force. Applied Mechanics, 2(4), 728-738. https://doi.org/10.3390/applmech2040042

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