Development of retrofitting method against fatigue cracks in orthotropic steel deck stiffened by trough ribs
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Bibliographic Details
| Author(s): |
Takahiro Shinno
(Honshu-shikoku bridge Expressway Co.,Ltd, Hyogo, JP)
Yoshiaki Mizokami (Honshu-shikoku bridge Expressway Co.,Ltd, Hyogo, JP) Akir Moriyama (Honshu-shikoku bridge Expressway Co.,Ltd, Hyogo, JP) Yuki Kishi (Honshu-shikoku bridge Expressway Co.,Ltd, Hyogo, JP) Masahiro Sakano (Kansai University, Osaka, JP) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Engineering the Developing World, Kuala Lumpur, Malaysia, 25-27 April 2018 | ||||
| Published in: | IABSE Conference Kuala Lumpur 2018 | ||||
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| Page(s): | 482-488 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/kualalumpur.2018.0482 | ||||
| Abstract: |
Orthotropic steel deck is suitable for a long span bridge because of its light weight. And closed section ribs, we call “trough ribs”, are used for orthotropic steel deck in Honshu-Shikoku Bridges because of excellent bending capacity with less number of weld lines and less areas of anti- corrosion. In orthotropic steel decks stiffened by trough ribs, fatigue cracks resulting from large vehicles have been observed with the increase of the service years. The cracks found in trough-deck welds are bead-penetrating type. Several retrofitting methods have been studied for these bead-penetrating cracks so far. However, effective method that is applicable from the underside of the deck is still under development. In this paper, development of a retrofitting method using Thread Rolling Screw from the underside of the deck, fatigue test results and application test in an in-service bridge are described. |
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| Keywords: |
orthotropic steel deck bead-penetrating crack thread Rolling Screw retrofitting method from the underside of the deck
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