有効地震動継続時間と総エネルギー入力量に基づく応答変形量推定

概要

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In order to evaluate the seismic safety for RC buildings on the basis of the amount of input energy which the buildings can bear, it is necessary to clarify the relationship between the total input energy and the maximum response displacement. As pointed out by many researchers, it is difficult to relate the total input energy to the maximum response displacement without taking into account the rapidity of the energy input. In this paper, a simple method to evaluate the rapidity of energy input was proposed. The total energy was assumed to be input during effective duration of earthquake motions. As a result of analysis, it was confirmed that the effective duration could be set as a constant value for a earthquake motion, regardless of the difference of period, yield strength, maximum response displacement and hysteresis loop area. In spite of the simple modeling of the rapidity of energy input, it was made clear that the total input energy could be related to the maximum response displacement accurately by using the effective duration assumed to be constant.
一般社団法人日本建築学会の論文
2001-03-20