鋼構造論文集
Online ISSN : 1884-0329
Print ISSN : 1880-9928
一般論文
鋼管集成橋脚に設けられたせん断パネルダンパー溶接部の低サイクル疲労評価手法
清水 優舘石 和雄判治 剛杉山 裕樹曽我 恭匡足立 陸野田 拓史
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2017 年 24 巻 96 号 p. 96_17-96_29

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Multiple Steel Columns is an earthquake-resistance bridge pier which has shear panel dampers between four steel columns. In the previous study, although the shear panel damper absorbs the seismic energy, low-cycle fatigue crack has been observed around welding of shear panel. In this study, evaluation method of low-cycle fatigue based on local strain range at crack initiation point was applied to crack in shear panel. To simplify calculation of local strain range, relationship between mean shear strain range of shear panel and local strain range at crack initiation point was developed. For quasi-static and dynamic loading condition, crack initiation life was evaluated by simplified estimation method.

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© 2017 社団法人 日本鋼構造協会
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