鋼床版デッキとUリブ溶接部の疲労損傷に対する供用下溶接補修工法に関する検討

• Published in: Kou kouzou rombunshuu Vol. 22; no. 85; pp. 85_85 - 85_100
• Main Authors: 川上, 順子, 高田, 佳彦, 坂野, 昌弘
• Format: Journal Article
• Language: Japanese
• Published: 社団法人 日本鋼構造協会 2015; Japanese Society of Steel Construction
• Subjects: fatigue; Orthotropic deck plate; retrofit, welding; vibration monitoring; work under service; 供用下施工; 振動計測; 溶接補修; 疲労損傷; 鋼床版
• ISSN: 1880-9928; 1884-0329
• DOI: 10.11273/jssc.22.85_85

Recently, a number of fatigue cracks have been detected in orthotropic steel decks. Among them, fatigue cracking in the welded joint between steel deck and ribs or stiffeners is possible to propagate to deck plate and it has a risk to do harm to the traffic pass by on the deck plate. So, development of effective retrofit method is strongly needed. In this study, fatigue tests, and damage investigation were conducted to evaluate the fatigue cracking behavior in the welded joint and to verify the effect of proposed retrofitting method.