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Seismic response control effects for reinforced-concrete buildings incorporating a passive variable friction device
| Title: | Seismic response control effects for reinforced-concrete buildings incorporating a passive variable friction device |
| Authors: | Shirai, Kazutaka Browse this author →KAKEN DB | | Ito, Tomoaki Browse this author | | Kikuchi, Masaru Browse this author →KAKEN DB |
| Keywords: | Variable friction damper | | Variable friction device | | Displacement-dependent | | Earthquake response | | Historic building | | Reinforced concrete structure |
| Issue Date: | 15-Dec-2022 |
| Publisher: | Elsevier |
| Journal Title: | Journal of Building Engineering |
| Volume: | 62 |
| Start Page: | 105388 |
| Publisher DOI: | 10.1016/j.jobe.2022.105388 |
| Abstract: | The seismic response behavior and control effects of reinforced concrete (RC) structures incor-porating a variable friction damper were numerically investigated in this study. The damper considered was a passive displacement-dependent variable friction device (VFD), whose sliding force decreases as the device displacement increases. A nonlinear response simulation was carried out using a single-degree-of-freedom system model under various input motions. The results showed that the VFD was effective for controlling the response of the RC structure, not only for reducing the displacement but also for mitigating the increase in the story shear force and ac-celeration. Also, the nonlinear earthquake response of a three-dimensional frame model repre-senting a historic RC temple building retrofitted with VFDs was assessed. The results showed that the VFDs clearly mitigated the peak story shear of the device-installed story, compared with a passive conventional friction device (CFD). The VFD significantly reduced the peak story drift of the device-installed story compared with the uncontrolled case. Moreover, the peak story drift at the base story for the VFD was decreased compared to the CFD. The VFD contributes to enhancing the aseismic performance of RC superstructures while suppressing the stress increase in the foundation. |
| Rights: | © 2022 The Authors. Published by Elsevier Ltd. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/87531 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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