震災をうけた鋼構造骨組の復旧法に関する実験的研究

概要

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An experimental study on steel structures was carried out to investigate repair methods of steel structures severely damaged due to earthquake and to evaluate earthquake resistant ability of repaired structures. At first, four steel frames which were composed of built up wide flange columns and beams were horizontally loaded cyclically until local bucklings occurred at the flange plates of every column ends. After initial loading, these damaged frames were repaired according to two different methods respectively. One method is that angle braces were put into damaged frame. The other method of repair is that steel plates were welded perpendicular to flange plates at the damaged column ends remaining small gaps at the end. After repair, those four steel frames were horizontally loaded again cyclically until their story drift to be 1/20 radian. As a result, it comes clear that those tested repair methods were very effective.
一般社団法人日本建築学会の論文
1989-03-10