Abstract:A building was severely damaged during the 2011 Tohoku Earthquake in spite of having been strengthened before the event and having withstood a comparable event before with only minor damage. An experimental study was conducted to test the hypothesis that damage to the building may have been triggered by cone breakout failure of anchors installed during the strengthening program leading to a strain concentration at the third story. Specimens were tested which represented portions of shear wall boundary columns … Show more
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