Inspection and Retrofitting of Fatigue Damaged Orthotropic Steel Deck
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Bibliografische Angaben
| Autor(en): |
Takuyo Konishi
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| Medium: | Tagungsbeitrag | ||||
| Sprache(n): | Englisch | ||||
| Tagung: | 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008 | ||||
| Veröffentlicht in: | IABSE Congress Chicago 2008 | ||||
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| Seite(n): | 456-457 | ||||
| Anzahl der Seiten (im PDF): | 8 | ||||
| Jahr: | 2008 | ||||
| DOI: | 10.2749/222137908796293514 | ||||
| Abstrakt: |
Fatigue Damages in orthotropic steel deck (OSD) become a big annoying problem for the Metropolitan Expressway in Japan. One of the most serious fatigue crack in OSD is the crack initiating from the root of tough rib weld and propagating upward through deck plate. Visual detection is impossible before it penetration deck and cause water leak and surface subsidence. Special semi-automatic ultrasonic (SAUT) testing device was developed to detect the embeded cracks quickly. Several retrofitting methods have been proposed and tested. SFRC surfaceing is tentatively adopted on the damaged span. Performance of the SFRC is measured on site. This paper presents technique of OSD inspection, retrofitting methods and performance improvement of the retrofitted OSD. |
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| Stichwörter: |
orthotrope Stahlfahrbahn Ermüdungsriß Retrofit
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