2015 Fiscal Year Final Research Report
A Study on Evaluation for Residual Axial Force of Corroded High Strength Bolts
| Project/Area Number |
25420488
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ARIZUMU Yasunori 琉球大学, 工学部, 教授 (90109306)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 腐食 / 高力ボルト / 残存軸力 / 腐食減肉形状 / FEM |
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| Outline of Final Research Achievements |
In this study, a residual axial force for corroded high-strength bolts has been investigated. Corroded high-strength bolts cut from a steel bridge were used for the measurement of thickness reduction and residual axial force. An FE analysis examined the effect of the corroded shape of bolts on the residual axial force. Based on both experimental and analytical results, it was revealed that the summation of the thickness reduction near the washer for nut and bolt head can approximately estimate the residual axial force of corroded bolts, and an appli-cable evaluation method was proposed.
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| Free Research Field |
維持管理工学
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