ESTIMATE OF STORY SHEAR FORCE AND FRAME STIFFNESS BY STRAIN RESPONSE MEASUREMENT OF STEEL STRUCTURE UNDER EARTHQUAKES

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  • 鉄骨造建物の地震時ひずみ応答実測による層せん断力および架構剛性の推定

Abstract

<p>The seismic response records of acceleration and strain of a three-story steel structure building were obtained and analyzed. From the strain measurement, the shear force actually applied to the column or the story could be obtained, and the frame stiffness could be calculated by combining this with the acceleration response measurement result. It was shown that the change in frame stiffness could be separated from the change in predominant frequency, and that the change in the frame stiffness was not as great as the change in the predominant frequency.</p>

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