Study on Fatigue Durability of Steel Box Girder Corner Plate Weld with Peening
|
|
|||||||||||
Bibliographic Details
| Author(s): |
Takamitsu Nishishiba
(NAIGAI-KOZO Company Limited, research division, Osaka-city, Japan)
Yoshihiko Takada (Hanshin Expressway Company Limited, maintenance of traffic division, Kobe- city, Japan) Misa Kumazawa (Hanshin Expressway Engineering Company Limited, research division, Osaka- city, Japan) Ryoji Okamoto (Hanshin Expressway Engineering Company Limited, research division, Osaka- city, Japan) Kazuo Tateishi (Nagoya University, civil engineering, Nagoya- city, Japan) Masaru Shimizu (Nagoya University, civil engineering, Nagoya- city, Japan) |
||||
|---|---|---|---|---|---|
| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022 | ||||
| Published in: | IABSE Symposium Prague 2022 | ||||
|
|||||
| Page(s): | 783-791 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/prague.2022.0783 | ||||
| Abstract: |
Corner plates are sometimes added to the web-to-flange joints of box girder bridges by welding on a single side to increase stiffness. In the case of the Minatogawa Bridge on the Hanshin Expressway, a steel box girder with low girder height and corner plate was used to reduce the weight of the superstructure. In this bridge, many fatigue cracks were observed in the welds of the corner plates. As a crack suppression measure, the end of corner plate was cut-out in U-shape. Although the stress concentration relaxation reduced the risk of crack initiation, the risk of crack initiation starting from the un-welded area still remains. In this study, we focused on peening as a countermeasure to improve the fatigue endurance. As a result, it was confirmed that peening to the un-welded area was effective in improving the fatigue endurance. |
||||
| Keywords: |
fatigue crack steel box girder peening Corner plate Cut-out in U-shape
|
||||
| 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. |
||||