58 エネルギー入力率に基づく必要耐力の推定に関する一手法

概要

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The 1995 Hyogo-ken-Nanbu earthquake caused serious damage to Hanshin-Awazi area. One reason of this serious damage, as was pointed out by many researchers, was the high energy input rate to structures as well as the total energy input. In this report, characteristics of energy input rate to inelastic SDOF structures are evaluated. Energy equivalent factor is derived from the relationship between energy input obtained by multiplying appropriate time by energy input rate and absorbed energy. It is found that the factor is generally related to plastic equivalent period regardless of difference of input ground motion, hysteresis characteristic and allowable ductility factor. The proposed factor makes it easy to obtain demand resistance, as it can be calculated from energy input rate to elastic SDOF structure.
一般社団法人日本建築学会の論文
1997-03-20