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タイトル: | Critical Response of 2DOF Elastic–Plastic Building Structures under Double Impulse as Substitute of Near-Fault Ground Motion |
著者: | Taniguchi, Ryo Kojima, Kotaro Takewaki, Izuru |
著者名の別形: | 竹脇, 出 |
キーワード: | earthquake response near-fault ground motion double impulse critical input elastic–plastic response resonance upper bound convex model |
発行日: | 5-Feb-2016 |
出版者: | Frontiers Media SA |
誌名: | Frontiers in Built Environment |
巻: | 2 |
論文番号: | 2 |
抄録: | The double impulse is introduced as a substitute of the fling-step near-fault ground motion and a critical elastic–plastic response of a two-degree-of-freedom (2DOF) building structure under the “critical double impulse” is evaluated. Since only the free-vibration appears under such double impulse, the energy balance approach plays an important and essential role in the derivation of the solution of a complicated elastic–plastic critical response. It is shown that the critical timing of the double impulse is characterized by the timing of the second impulse at the zero story shear force in the first story. This timing guarantees the maximum energy input by the second impulse that causes the maximum plastic deformation after the second impulse. Because the response of 2DOF elastic–plastic building structures is quite complicated due to the phase difference between two masses compared to single-degree-of-freedom models for which a closed-form critical response can be derived, the upper bound of the critical response is introduced by using the convex model. |
著作権等: | © 2016 Taniguchi, Kojima and Takewaki. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
URI: | http://hdl.handle.net/2433/216516 |
DOI(出版社版): | 10.3389/fbuil.2016.00002 |
出現コレクション: | 学術雑誌掲載論文等 |
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