Slipping Behavior and Relaxation Characteristics of Thin-Walled GFRP High-Strength Bolted Friction Joints for Sound Barriers on Bridge Viaducts
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Bibliographic Details
| Author(s): |
Masaki Sekimoto
(Osaka Metropolitan University, Osaka, Japan)
Gen Hayashi (Osaka Metropolitan University, Osaka, Japan) Takashi Yamaguchi (Osaka Metropolitan University, Osaka, Japan) Keiichi Sakai (Miyaji Engineering Co. Ltd., Tokyo, Japan) Kai Aoki (Miyaji Engineering Co. Ltd., Tokyo, Japan) Keigo Kubo (Miyaji Engineering Co. Ltd., Tokyo, Japan) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 490-497 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/nanjing.2022.0490 | ||||
| Abstract: |
This study aimed to clarify the performance of high-strength bolted joints for thin-walled glass-fiber- reinforced polymer (GFRP) members by conducting slip tests and long-term relaxation tests. The parameters of the slip test were the FRP surface treatment, bolt axial force, and bolt hole diameter. Relaxation characteristics might also be affected by variations in fiber content based on differences in production lots. Hence, samples from different production lots were taken. However, in these tests, the influence of all parameters was relatively minimal. One year after tightening, the axial force reduction gradually subsided and tended toward convergence. However, because it is difficult to determine convergence based on temperature changes, long-term measurements will continue. In the slip tests, the highest slip coefficient was obtained when the GFRP was coated with fluoroplastic and the connecting plates were treated with phosphate. This study proposes a design slip coefficient for GFRP high-strength bolted friction joints. |
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| Keywords: |
GFRP relaxation high-strength bolted friction joints slipping behavior
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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