限界耐力計算による多層建築物の最大地震応答評価における高次モード応答の考慮

概要

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Based on two equations to predict the time history of the story shear and story drift of multi-story buildings under earthquake motions previously proposed by the author, evaluation methods of the maximum story shear and story drift are investigated to improve the predicting accuracy of those by the calculation of response and limit strength provided in the Building Standard Law Enforcement Order of Japan in this paper. Two equations using the square root of sum of squares method to evaluate the maximum responses are proposed. The evaluated results are compared with the maximum responses in the time history earthquake response analyses for 4 and 12 story RC buildings with 12 earthquake motions. Almost good agreements between the evaluated and analytical results are obtained, while some scatter is observed in the comparison of the maximum story drift of 4 story buildings.
2005-01-30