2017 Fiscal Year Final Research Report
Development of heat treatment system by small and portable induction heating device for repair weld of steel bridge
| Project/Area Number |
16K14297
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 鋼橋 / 補修 / 溶接 / 残留応力 / 熱処理 |
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| Outline of Final Research Achievements |
It is general that bolting is applied on repair and reinforcement of steel structures damaged by corrosion or fatigue. Bolting as a repair joining method has demerits like as weight increase and difficulty of work at narrow part. This study assumes application of welding on repair and reinforcement of steel structures because welding may control the weight increase and have better workability at narrow part compared with bolting.
However, welding residual stress possibly affects the structural performance of repaired members. Therefore, heat treatment by small and portable induction heating device for reduction of welding residual stress was investigated in this study. A series of experiment and numerical analysis was performed on patch joints simulating repair on damaged steel structural members. In this repair welding, a method for reducing residual stress by the portable induction heating device was proposed.
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| Free Research Field |
構造工学，鋼構造学，溶接工学
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