地動継続時間が鋼構造骨組の地震入力エネルギーの評価に及ぼす影響

概要

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This paper is concerned with the evaluation of the damage-causing earthquake input energy used in energy-based seismic design. ln previous papers, we proposed that input energy should be defined as the maximum response of the sum of elastic strain energy and the energy dissipated by plastic deformation. We also proposed that input energy can be predicted by using a pseudo-velocity response spectrum. However, this prediction method cannot be applied to extremely long ground motions. This paper determines the critical duration of ground motions in order to limit the range in which the prediction method is applicable.