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発表 Retrofit effect by SFRC overlay for existing orthotropic steel decks with fatigue cracks through the rib-to-deck welds

作成年度 2015 年度
論文名 Retrofit effect by SFRC overlay for existing orthotropic steel decks with fatigue cracks through the rib-to-deck welds
論文名(和訳)
論文副題
発表会
誌名 WECC2015
巻・号・回
発表年月日 2015/11/01
所属研究室/機関名 著者名(英名)
Public Works Research InstituteMurakoshi, J.
橋梁構造研究グループ(現新日本技研(株))Kosuge, T.
横河ブリッジ(株)Ishii, H.
横河ブリッジ(株)Kasugai, T.
橋梁構造研究グループ(現本州四国連絡高速道路(株))Toyama, N.
抄録
Recently, serious fatigue cracks have increasingly been reported at rib?to-deck welds in orthotropic steel decks on severe traffic highway routes. As an effective countermeasure against these fatigue cracks, a steel-fiber reinforced concrete (SFRC) overlay is gradually applied, while crack tips are removed to reduce local stress in the shape of cut-out details. Static/fatigue loading tests and FE analyses were conducted for a full scale OSD specimen overlaid by SFRC in order to investigate fatigue behavior around cut-out details by changing the length and location of weld root cracks. In this paper, these results are presented and the retrofit effect by SFRC overlay is discussed.
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