Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large Amplitude
This paper aims to develop a hysteretic–viscous hybrid (HVH) damper system for long-period pulse-type earthquake ground motions of large amplitude. Long-period pulse-type earthquake ground motions of large amplitude have been recorded recently (Northridge, 1994; Kumamoto, 2016). It is well-known tha...
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2020-06-01
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Online Access: | https://www.frontiersin.org/article/10.3389/fbuil.2020.00062/full |
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doaj-06f7a5f7bba04824ae8303d9fd8933e92020-11-25T02:26:28ZengFrontiers Media S.A.Frontiers in Built Environment2297-33622020-06-01610.3389/fbuil.2020.00062528575Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large AmplitudeShoki HashizumeIzuru TakewakiThis paper aims to develop a hysteretic–viscous hybrid (HVH) damper system for long-period pulse-type earthquake ground motions of large amplitude. Long-period pulse-type earthquake ground motions of large amplitude have been recorded recently (Northridge, 1994; Kumamoto, 2016). It is well-known that these ground motions could cause severe damage to high-rise and base-isolated buildings with long natural period. To mitigate the damage caused by such ground motion, a new viscous–hysteretic hybrid damper system is proposed here, which consists of a viscous damper with large stroke and a hysteretic damper including a gap mechanism. A double impulse is employed as a representative of long-period pulse-type earthquake ground motions of large amplitude and a closed-form maximum response to this double impulse is derived for an elastic–plastic SDOF system including the proposed HVH system. To reveal the effectiveness of the proposed HVH system, time-history response analyses are performed for an amplitude modulated double impulse and a recorded ground motion at Kumamoto (2016). The performance comparison with the previous dual hysteretic damper (DHD) system consisting of small-amplitude and large-amplitude hysteretic dampers in parallel is also conducted to investigate the effectiveness of the proposed HVH system.https://www.frontiersin.org/article/10.3389/fbuil.2020.00062/fulldampingviscous damperhysteretic damperhybrid usegap mechanismdouble impulse |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shoki Hashizume Izuru Takewaki |
spellingShingle |
Shoki Hashizume Izuru Takewaki Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large Amplitude Frontiers in Built Environment damping viscous damper hysteretic damper hybrid use gap mechanism double impulse |
author_facet |
Shoki Hashizume Izuru Takewaki |
author_sort |
Shoki Hashizume |
title |
Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large Amplitude |
title_short |
Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large Amplitude |
title_full |
Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large Amplitude |
title_fullStr |
Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large Amplitude |
title_full_unstemmed |
Hysteretic–Viscous Hybrid Damper System for Long-Period Pulse-Type Earthquake Ground Motions of Large Amplitude |
title_sort |
hysteretic–viscous hybrid damper system for long-period pulse-type earthquake ground motions of large amplitude |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Built Environment |
issn |
2297-3362 |
publishDate |
2020-06-01 |
description |
This paper aims to develop a hysteretic–viscous hybrid (HVH) damper system for long-period pulse-type earthquake ground motions of large amplitude. Long-period pulse-type earthquake ground motions of large amplitude have been recorded recently (Northridge, 1994; Kumamoto, 2016). It is well-known that these ground motions could cause severe damage to high-rise and base-isolated buildings with long natural period. To mitigate the damage caused by such ground motion, a new viscous–hysteretic hybrid damper system is proposed here, which consists of a viscous damper with large stroke and a hysteretic damper including a gap mechanism. A double impulse is employed as a representative of long-period pulse-type earthquake ground motions of large amplitude and a closed-form maximum response to this double impulse is derived for an elastic–plastic SDOF system including the proposed HVH system. To reveal the effectiveness of the proposed HVH system, time-history response analyses are performed for an amplitude modulated double impulse and a recorded ground motion at Kumamoto (2016). The performance comparison with the previous dual hysteretic damper (DHD) system consisting of small-amplitude and large-amplitude hysteretic dampers in parallel is also conducted to investigate the effectiveness of the proposed HVH system. |
topic |
damping viscous damper hysteretic damper hybrid use gap mechanism double impulse |
url |
https://www.frontiersin.org/article/10.3389/fbuil.2020.00062/full |
work_keys_str_mv |
AT shokihashizume hystereticviscoushybriddampersystemforlongperiodpulsetypeearthquakegroundmotionsoflargeamplitude AT izurutakewaki hystereticviscoushybriddampersystemforlongperiodpulsetypeearthquakegroundmotionsoflargeamplitude |
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